Komatsu PC238USLC-11 Install guide
HYDRAULIC
EXCAVATOR
SEN06635-02
PC238USLC-11
SERIAL NUMBERS
5001
and up
INDEX
00 INDEX AND FOREWORD ........................................................................................................................ 00-1
ABBREVIATION LIST ........................................................................................................................... 00-19
FOREWORD, SAFETY, BASIC INFORMATION ................................................................................... 00-25
HOW TO READ THE SHOP MANUAL........................................................................................... 00-25
SAFETY NOTICE FOR OPERATION............................................................................................. 00-27
PRECAUTIONS TO PREVENT FIRE............................................................................................. 00-35
ACTIONS IF FIRE OCCURS ......................................................................................................... 00-37
PRECAUTIONS FOR DISPOSING OF WASTE MATERIALS ........................................................ 00-38
ACTIONS TAKEN TO MEET EXHAUST GAS REGULATIONS...................................................... 00-39
PRECAUTIONS FOR DEF............................................................................................................. 00-40
PRECAUTIONS FOR HANDLING HYDRAULIC EQUIPMENT ...................................................... 00-41
PRECAUTIONS FOR DISCONNECTION AND CONNECTION OF PIPINGS................................ 00-44
PRECAUTIONS FOR HANDLING ELECTRICAL EQUIPMENT..................................................... 00-51
PRECAUTIONS FOR HANDLING FUEL SYSTEM EQUIPMENT .................................................. 00-53
PRECAUTIONS FOR HANDLING INTAKE SYSTEM EQUIPMENT .............................................. 00-54
PRACTICAL USE OF KOMTRAX .................................................................................................. 00-55
DISCONNECT AND CONNECT PUSH-PULL TYPE COUPLER ................................................... 00-56
PRECAUTIONS FOR DISCONNECTION AND CONNECTION OF CONNECTORS ..................... 00-60
METHOD FOR DISCONNECTING AND CONNECTING DEUTSCH CONNECTOR ..................... 00-64
METHOD FOR DISCONNECTING AND CONNECTING SLIDE LOCK TYPE CONNECTOR ....... 00-65
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH LOCK TO PULL ... 00-67
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH LOCK TO PUSH .. 00-68
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH HOUSING TO ROTATE .
................................................................................................................................................... 00-70
HOW TO READ ELECTRICAL WIRE CODE ................................................................................. 00-71
EXPLANATION OF TERMS FOR MAINTENANCE STANDARD.................................................... 00-75
STANDARD TIGHTENING TORQUE TABLE................................................................................. 00-78
CONVERSION TABLE ................................................................................................................... 00-85
01 SPECIFICATIONS .................................................................................................................................... 01-1
CONTENTS ............................................................................................................................................ 01-2
ABBREVIATION LIST ............................................................................................................................. 01-3
SPECIFICATIONS .................................................................................................................................. 01-9
SPECIFICATION DRAWING............................................................................................................ 01-9
WORKING RANGE DRAWINGS ....................................................................................................01-11
SPECIFICATIONS ......................................................................................................................... 01-12
WEIGHT TABLE ............................................................................................................................ 01-15
FUEL, COOLANT, LUBRICANTS (FOR NORTH AMERICA) ......................................................... 01-17
10 STRUCTURE AND FUNCTION ................................................................................................................ 10-1
CONTENTS ............................................................................................................................................ 10-2
ABBREVIATION LIST ............................................................................................................................. 10-5
UREA SCR SYSTEM.............................................................................................................................10-11
LAYOUT DRAWING OF UREA SCR SYSTEM ...............................................................................10-11
UREA SCR SYSTEM DIAGRAM ................................................................................................... 10-16
FUNCTION OF UREA SCR SYSTEM............................................................................................ 10-17
COMPONENT PARTS OF UREA SCR SYSTEM........................................................................... 10-27
BOOT-UP SYSTEM .............................................................................................................................. 10-36
LAYOUT DRAWING OF BOOT-UP SYSTEM................................................................................. 10-36
SYSTEM OPERATING LAMP SYSTEM ........................................................................................ 10-38
BATTERY DISCONNECT SWITCH ............................................................................................... 10-39
ENGINE SYSTEM ................................................................................................................................ 10-40
LAYOUT DRAWING OF ENGINE SYSTEM................................................................................... 10-40
ENGINE CONTROL SYSTEM ....................................................................................................... 10-42
AUTO-DECELERATION SYSTEM ................................................................................................. 10-45
ENGINE AUTOMATIC WARM-UP SYSTEM .................................................................................. 10-47
OVERHEAT PREVENTION SYSTEM ............................................................................................ 10-49
TURBOCHARGER PROTECTION SYSTEM................................................................................. 10-52
INDEX 00 INDEX AND FOREWORD
00-2 PC238USLC-11
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AUTOMATIC IDLE STOP SYSTEM ............................................................................................... 10-54
COMPONENT PARTS OF ENGINE SYSTEM ............................................................................... 10-57
COOLING SYSTEM.............................................................................................................................. 10-76
LAYOUT DRAWING OF COOLING SYSTEM ................................................................................ 10-76
FAN SPEED CONTROL SYSTEM OF FAN CLUTCH .................................................................... 10-78
ENGINE OUTPUT CONTROL SYSTEM OF FAN CLUTCH........................................................... 10-80
COMPONENT PARTS OF COOLING SYSTEM............................................................................. 10-82
CONTROL SYSTEM............................................................................................................................. 10-83
LAYOUT DRAWING OF CONTROL SYSTEM ............................................................................... 10-83
MACHINE MONITOR SYSTEM ..................................................................................................... 10-86
KomVision SYSTEM ...................................................................................................................... 10-88
KOMTRAX SYSTEM...................................................................................................................... 10-92
COMPONENT PARTS OF CONTROL SYSTEM............................................................................ 10-93
HYDRAULIC SYSTEM.........................................................................................................................10-135
LAYOUT DRAWING OF HYDRAULIC SYSTEM ...........................................................................10-135
CLSS ............................................................................................................................................10-139
ENGINE AND PUMP COMBINED CONTROL SYSTEM...............................................................10-158
PUMP AND VALVE CONTROL SYSTEM .....................................................................................10-165
COMPONENT PARTS OF HYDRAULIC SYSTEM .......................................................................10-168
WORK EQUIPMENT SYSTEM ............................................................................................................10-254
LAYOUT DRAWING OF WORK EQUIPMENT SYSTEM ..............................................................10-254
ONE-TOUCH POWER MAXIMIZING SYSTEM ............................................................................10-259
PPC LOCK SYSTEM ....................................................................................................................10-261
WORK EQUIPMENT AND TRAVEL AUTOMATIC LOCK SYSTEM ..............................................10-262
OIL FLOW ADJUSTER SYSTEM FOR ATTACHMENT.................................................................10-264
COMPONENT PARTS OF WORK EQUIPMENT SYSTEM...........................................................10-266
SWING SYSTEM .................................................................................................................................10-290
LAYOUT DRAWING OF SWING SYSTEM ...................................................................................10-290
SWING CONTROL SYSTEM DIAGRAM ......................................................................................10-294
COMPONENT PARTS OF SWING SYSTEM................................................................................10-298
TRAVEL SYSTEM................................................................................................................................10-313
LAYOUT DRAWING OF TRAVEL SYSTEM ..................................................................................10-313
TRAVEL CONTROL SYSTEM DIAGRAM .....................................................................................10-317
COMPONENT PARTS OF TRAVEL SYSTEM ..............................................................................10-319
UNDERCARRIAGE AND FRAME........................................................................................................10-340
LAYOUT DRAWING OF UNDERCARRIAGE................................................................................10-340
WORK EQUIPMENT............................................................................................................................10-342
STRUCTURE OF WORK EQUIPMENT ........................................................................................10-342
FUNCTION OF WORK EQUIPMENT ...........................................................................................10-343
WORK EQUIPMENT CLEARANCE ADJUSTMENT SHIM............................................................10-344
BUCKET CLEARANCE ADJUSTMENT SHIM ..............................................................................10-345
CAB AND ITS ATTACHMENTS ...........................................................................................................10-346
ROPS CAB ...................................................................................................................................10-346
CAB MOUNT ................................................................................................................................10-347
CAB TIPPING STOPPER .............................................................................................................10-348
TAKE WIRING HARNESS OUT OF CAB ......................................................................................10-349
20 STANDARD VALUE TABLE ...................................................................................................................... 20-1
CONTENTS ............................................................................................................................................ 20-2
ABBREVIATION LIST ............................................................................................................................. 20-3
STANDARD VALUE TABLE FOR ENGINE ............................................................................................. 20-9
STANDARD VALUE TABLE FOR ENGINE: PC238USLC-11 ........................................................... 20-9
STANDARD VALUE TABLE FOR MACHINE......................................................................................... 20-14
STANDARD VALUE TABLE FOR MACHINE: PC238USLC-11....................................................... 20-14
MACHINE POSTURE AND PROCEDURE FOR MEASURING PERFORMANCE ......................... 20-28
30 TESTING AND ADJUSTING..................................................................................................................... 30-1
CONTENTS ............................................................................................................................................ 30-2
ABBREVIATION LIST ............................................................................................................................. 30-5
RELATED INFORMATION ON TESTING AND ADJUSTING .................................................................30-11
00 INDEX AND FOREWORD INDEX
PC238USLC-11 00-3
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TOOLS FOR TESTING AND ADJUSTING......................................................................................30-11
SKETCH OF TOOLS FOR TESTING AND ADJUSTING ............................................................... 30-17
ENGINE AND COOLING SYSTEM....................................................................................................... 30-18
TEST ENGINE SPEED .................................................................................................................. 30-18
TEST BOOST PRESSURE............................................................................................................ 30-21
TEST EXHAUST GAS COLOR...................................................................................................... 30-24
TEST AND ADJUST VALVE CLEARANCE .................................................................................... 30-27
TEST COMPRESSION PRESSURE.............................................................................................. 30-29
TEST BLOWBY PRESSURE ......................................................................................................... 30-34
TEST ENGINE OIL PRESSURE .................................................................................................... 30-36
TEST EGR VALVE AND VGT OIL PRESSURE ............................................................................. 30-37
TEST FUEL PRESSURE ............................................................................................................... 30-39
TEST FUEL DISCHARGE, RETURN AND LEAKAGE ................................................................... 30-45
BLEEDING AIR FROM FUEL SYSTEM ......................................................................................... 30-52
TEST FUEL CIRCUIT FOR LEAKAGE .......................................................................................... 30-53
HANDLE CYLINDER CUT-OUT MODE OPERATION.................................................................... 30-55
HANDLE NO-INJECTION CRANKING OPERATION ..................................................................... 30-56
TEST AND ADJUST AIR CONDITIONER COMPRESSOR BELT TENSION ................................. 30-57
TEST COOLING FAN SPEED ...................................................................................................... 30-59
WRITE ASH IN SOOT ACCUMULATION CORRECTION TO ENGINE CONTROLLER ................ 30-60
TEST SCR RELATED FUNCTIONS............................................................................................... 30-61
CLEAN AdBlue/DEF TANK ............................................................................................................ 30-89
BLEED AIR FROM COOLANT CIRCUIT OF AdBlue/DEF TANK ................................................... 30-93
POWER TRAIN..................................................................................................................................... 30-95
TEST SWING CIRCLE BEARING CLEARANCE ........................................................................... 30-95
UNDERCARRIAGE AND FRAME......................................................................................................... 30-96
TEST AND ADJUST TRACK TENSION......................................................................................... 30-96
HYDRAULIC SYSTEM.......................................................................................................................... 30-98
RELEASE REMAINING PRESSURE FROM HYDRAULIC SYSTEM............................................. 30-98
TEST AND ADJUST OIL PRESSURE IN WORK EQUIPMENT, SWING, AND TRAVEL CIRCUITS........
..................................................................................................................................................30-104
TEST OIL PRESSURE OF CONTROL CIRCUIT ..........................................................................30-115
TEST AND ADJUST OIL PRESSURE IN PUMP PC CONTROL CIRCUIT ...................................30-117
TEST AND ADJUST OIL PRESSURE IN PUMP LS CONTROL CIRCUIT....................................30-121
TEST OUTLET PRESSURE OF SOLENOID VALVE ....................................................................30-127
TEST PPC VALVE OUTLET PRESSURE .....................................................................................30-131
ADJUST WORK EQUIPMENT AND SWING PPC VALVES ..........................................................30-134
TEST PUMP SWASH PLATE SENSOR........................................................................................30-135
TEST THE PARTS CAUSING HYDRAULIC DRIFT IN WORK EQUIPMENT................................30-136
TEST OIL LEAKAGE ....................................................................................................................30-139
BLEED AIR FROM HYDRAULIC CIRCUIT ...................................................................................30-142
WORK EQUIPMENT............................................................................................................................30-146
ADJUST BOOM ANGLE POTENTIOMETER................................................................................30-146
CAB AND ITS ATTACHMENTS ...........................................................................................................30-147
TEST CAB TIPPING STOPPER ...................................................................................................30-147
METHOD FOR ADJUSTING MIRRORS .......................................................................................30-148
ELECTRICAL SYSTEM .......................................................................................................................30-155
SET AND OPERATE MACHINE MONITOR..................................................................................30-155
METHOD FOR STARTING UP KOMTRAX TERMINAL ................................................................30-238
ADJUST REARVIEW CAMERA ANGLE .......................................................................................30-243
ADJUST KomVision CAMERA ANGLE .........................................................................................30-245
ADJUST KomVision RELATED ITEMS .........................................................................................30-247
HANDLE VOLTAGE CIRCUIT OF ENGINE CONTROLLER .........................................................30-264
HANDLE BATTERY DISCONNECT SWITCH ...............................................................................30-265
TEST DIODES ..............................................................................................................................30-266
Pm CLINIC...........................................................................................................................................30-267
Pm CLINIC SERVICE ...................................................................................................................30-267
40 TROUBLESHOOTING .............................................................................................................................. 40-1
INDEX 00 INDEX AND FOREWORD
00-4 PC238USLC-11
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CONTENTS ............................................................................................................................................ 40-2
ABBREVIATION LIST ........................................................................................................................... 40-13
RELATED INFORMATION ON TROUBLESHOOTING ......................................................................... 40-19
GENERAL TROUBLESHOOTING POINTS ................................................................................... 40-19
TROUBLESHOOTING POINTS FOR UREA SCR SYSTEM.......................................................... 40-20
SEQUENCE OF EVENTS IN TROUBLESHOOTING..................................................................... 40-32
CHECKS BEFORE TROUBLESHOOTING.................................................................................... 40-34
INSPECTION PROCEDURE BEFORE TROUBLESHOOTING ..................................................... 40-36
TESTING IN ACCORDANCE WITH TESTING PROCEDURE....................................................... 40-38
PREPARATION FOR TROUBLESHOOTING OF ELECTRICAL SYSTEM..................................... 40-59
PROCEDURE FOR TESTING AND TROUBLESHOOTING .......................................................... 40-66
SYMPTOMS OF FAILURE AND TROUBLESHOOTING NUMBERS ............................................. 40-69
INFORMATION DESCRIBED IN TROUBLESHOOTING TABLE.................................................... 40-73
TROUBLESHOOTING METHOD FOR OPEN CIRCUIT IN WIRING HARNESS OF PRESSURE SEN-
SOR SYSTEM............................................................................................................................ 40-75
CONNECTORS LIST AND LAYOUT.............................................................................................. 40-78
CONNECTOR CONTACT IDENTIFICATION ................................................................................. 40-92
T-BRANCH BOX AND T-BRANCH ADAPTER TABLE ..................................................................40-132
FUSE LOCATION TABLE .............................................................................................................40-138
PRECAUTIONS FOR CLEANING AND REPLACING KDPF (KCSF and KDOC)..........................40-140
PREPARATION OF SHORT CIRCUIT ELECTRICAL CONNECTOR (FOR FAILURE CODES [CA1883]
AND [CA3135])..........................................................................................................................40-144
FAILURE CODES TABLE .............................................................................................................40-146
TROUBLESHOOTING BY FAILURE CODE (DISPLAY OF CODE) .....................................................40-163
FAILURE CODE [879AKA]............................................................................................................40-163
FAILURE CODE [879AKB]............................................................................................................40-164
FAILURE CODE [879BKA]............................................................................................................40-165
FAILURE CODE [879BKB]............................................................................................................40-167
FAILURE CODE [879CKA]............................................................................................................40-169
FAILURE CODE [879CKB]............................................................................................................40-170
FAILURE CODE [879DKZ]............................................................................................................40-171
FAILURE CODE [879EMC] ...........................................................................................................40-173
FAILURE CODE [879FMC] ...........................................................................................................40-174
FAILURE CODE [879GKX] ...........................................................................................................40-175
FAILURE CODE [989L00].............................................................................................................40-177
FAILURE CODE [989M00] ............................................................................................................40-178
FAILURE CODE [989N00] ............................................................................................................40-179
FAILURE CODE [A1U0N3] ...........................................................................................................40-180
FAILURE CODE [A1U0N4] ...........................................................................................................40-182
FAILURE CODE [A900FR]............................................................................................................40-184
FAILURE CODE [A900N6] ............................................................................................................40-185
FAILURE CODE [A900NY]............................................................................................................40-186
FAILURE CODE [AA10NX] ...........................................................................................................40-187
FAILURE CODE [AB00KE] ...........................................................................................................40-189
FAILURE CODE [AQ10N3] ...........................................................................................................40-191
FAILURE CODE [AS00N3]............................................................................................................40-193
FAILURE CODE [AS00R2]............................................................................................................40-195
FAILURE CODE [AS00R3]............................................................................................................40-196
FAILURE CODE [AS00R4]............................................................................................................40-197
FAILURE CODE [AS00R5]............................................................................................................40-198
FAILURE CODE [AS00R6]............................................................................................................40-199
FAILURE CODE [AS00ZK]............................................................................................................40-200
FAILURE CODE [AS10KM]...........................................................................................................40-201
FAILURE CODE [AS10NR] ...........................................................................................................40-202
FAILURE CODE [AS10NT] ...........................................................................................................40-203
FAILURE CODE [B@BAZG] .........................................................................................................40-204
FAILURE CODE [B@BAZK]..........................................................................................................40-206
FAILURE CODE [B@BCNS] .........................................................................................................40-208
00 INDEX AND FOREWORD INDEX
PC238USLC-11 00-5
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FAILURE CODE [B@BCZK] .........................................................................................................40-210
FAILURE CODE [B@HANS] .........................................................................................................40-212
FAILURE CODE [CA115] ..............................................................................................................40-214
FAILURE CODE [CA122]..............................................................................................................40-219
FAILURE CODE [CA123]..............................................................................................................40-222
FAILURE CODE [CA131]..............................................................................................................40-224
FAILURE CODE [CA132]..............................................................................................................40-226
FAILURE CODE [CA144]..............................................................................................................40-228
FAILURE CODE [CA145]..............................................................................................................40-230
FAILURE CODE [CA153]..............................................................................................................40-232
FAILURE CODE [CA154]..............................................................................................................40-234
FAILURE CODE [CA187]..............................................................................................................40-236
FAILURE CODE [CA221]..............................................................................................................40-238
FAILURE CODE [CA222]..............................................................................................................40-240
FAILURE CODE [CA227]..............................................................................................................40-242
FAILURE CODE [CA234]..............................................................................................................40-243
FAILURE CODE [CA238]..............................................................................................................40-244
FAILURE CODE [CA239]..............................................................................................................40-245
FAILURE CODE [CA249]..............................................................................................................40-246
FAILURE CODE [CA256]..............................................................................................................40-248
FAILURE CODE [CA271]..............................................................................................................40-250
FAILURE CODE [CA272]..............................................................................................................40-252
FAILURE CODE [CA322]..............................................................................................................40-254
FAILURE CODE [CA323]..............................................................................................................40-256
FAILURE CODE [CA324]..............................................................................................................40-258
FAILURE CODE [CA325]..............................................................................................................40-260
FAILURE CODE [CA331]..............................................................................................................40-262
FAILURE CODE [CA332]..............................................................................................................40-264
FAILURE CODE [CA343]..............................................................................................................40-266
FAILURE CODE [CA351]..............................................................................................................40-268
FAILURE CODE [CA352]..............................................................................................................40-270
FAILURE CODE [CA356]..............................................................................................................40-272
FAILURE CODE [CA357]..............................................................................................................40-274
FAILURE CODE [CA386]..............................................................................................................40-276
FAILURE CODE [CA428]..............................................................................................................40-278
FAILURE CODE [CA429]..............................................................................................................40-280
FAILURE CODE [CA435]..............................................................................................................40-282
FAILURE CODE [CA441]..............................................................................................................40-284
FAILURE CODE [CA442]..............................................................................................................40-286
FAILURE CODE [CA449]..............................................................................................................40-287
FAILURE CODE [CA451]..............................................................................................................40-288
FAILURE CODE [CA452]..............................................................................................................40-290
FAILURE CODE [CA488]..............................................................................................................40-292
FAILURE CODE [CA515]..............................................................................................................40-295
FAILURE CODE [CA516]..............................................................................................................40-297
FAILURE CODE [CA553]..............................................................................................................40-299
FAILURE CODE [CA555]..............................................................................................................40-300
FAILURE CODE [CA556]..............................................................................................................40-302
FAILURE CODE [CA559]..............................................................................................................40-304
FAILURE CODE [CA595]..............................................................................................................40-307
FAILURE CODE [CA687]..............................................................................................................40-309
FAILURE CODE [CA689]..............................................................................................................40-311
FAILURE CODE [CA691]..............................................................................................................40-314
FAILURE CODE [CA692]..............................................................................................................40-316
FAILURE CODE [CA697]..............................................................................................................40-318
FAILURE CODE [CA698]..............................................................................................................40-319
FAILURE CODE [CA731]..............................................................................................................40-320
FAILURE CODE [CA778]..............................................................................................................40-322
INDEX 00 INDEX AND FOREWORD
00-6 PC238USLC-11
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FAILURE CODE [CA1117] ............................................................................................................40-327
FAILURE CODE [CA1664] ............................................................................................................40-328
FAILURE CODE [CA1669] ............................................................................................................40-331
FAILURE CODE [CA1673] ............................................................................................................40-332
FAILURE CODE [CA1677] ............................................................................................................40-333
FAILURE CODE [CA1678] ............................................................................................................40-334
FAILURE CODE [CA1682] ............................................................................................................40-335
FAILURE CODE [CA1683] ............................................................................................................40-339
FAILURE CODE [CA1684] ............................................................................................................40-341
FAILURE CODE [CA1686] ............................................................................................................40-343
FAILURE CODE [CA1691] ............................................................................................................40-344
FAILURE CODE [CA1694] ............................................................................................................40-347
FAILURE CODE [CA1695] ............................................................................................................40-349
FAILURE CODE [CA1696] ............................................................................................................40-351
FAILURE CODE [CA1712] ............................................................................................................40-353
FAILURE CODE [CA1713] ............................................................................................................40-356
FAILURE CODE [CA1714] ............................................................................................................40-359
FAILURE CODE [CA1715] ............................................................................................................40-360
FAILURE CODE [CA1776] ............................................................................................................40-361
FAILURE CODE [CA1777] ............................................................................................................40-364
FAILURE CODE [CA1843] ............................................................................................................40-367
FAILURE CODE [CA1844] ............................................................................................................40-369
FAILURE CODE [CA1879] ............................................................................................................40-371
FAILURE CODE [CA1881] ............................................................................................................40-373
FAILURE CODE [CA1883] ............................................................................................................40-375
FAILURE CODE [CA1885] ............................................................................................................40-380
FAILURE CODE [CA1887] ............................................................................................................40-382
FAILURE CODE [CA1921] ............................................................................................................40-384
FAILURE CODE [CA1922] ............................................................................................................40-387
FAILURE CODE [CA1942] ............................................................................................................40-392
FAILURE CODE [CA1993] ............................................................................................................40-394
FAILURE CODE [CA2185] ............................................................................................................40-397
FAILURE CODE [CA2186] ............................................................................................................40-398
FAILURE CODE [CA2249] ............................................................................................................40-400
FAILURE CODE [CA2271] ............................................................................................................40-403
FAILURE CODE [CA2272] ............................................................................................................40-405
FAILURE CODE [CA2288] ............................................................................................................40-407
FAILURE CODE [CA2311] ............................................................................................................40-409
FAILURE CODE [CA2349] ............................................................................................................40-411
FAILURE CODE [CA2353] ............................................................................................................40-413
FAILURE CODE [CA2357] ............................................................................................................40-415
FAILURE CODE [CA2381] ............................................................................................................40-418
FAILURE CODE [CA2382] ............................................................................................................40-420
FAILURE CODE [CA2383] ............................................................................................................40-423
FAILURE CODE [CA2386] ............................................................................................................40-425
FAILURE CODE [CA2387] ............................................................................................................40-427
FAILURE CODE [CA2555] ............................................................................................................40-430
FAILURE CODE [CA2556] ............................................................................................................40-432
FAILURE CODE [CA2637] ............................................................................................................40-434
FAILURE CODE [CA2639] ............................................................................................................40-436
FAILURE CODE [CA2771] ............................................................................................................40-438
FAILURE CODE [CA2777] ............................................................................................................40-443
FAILURE CODE [CA2976] ............................................................................................................40-446
FAILURE CODE [CA3133] ............................................................................................................40-448
FAILURE CODE [CA3134] ............................................................................................................40-450
FAILURE CODE [CA3135] ............................................................................................................40-452
FAILURE CODE [CA3142] ............................................................................................................40-455
FAILURE CODE [CA3143] ............................................................................................................40-456
00 INDEX AND FOREWORD INDEX
PC238USLC-11 00-7
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FAILURE CODE [CA3144] ............................................................................................................40-457
FAILURE CODE [CA3146] ............................................................................................................40-460
FAILURE CODE [CA3147] ............................................................................................................40-461
FAILURE CODE [CA3148] ............................................................................................................40-462
FAILURE CODE [CA3151] ............................................................................................................40-465
FAILURE CODE [CA3165] ............................................................................................................40-472
FAILURE CODE [CA3229] ............................................................................................................40-474
FAILURE CODE [CA3231] ............................................................................................................40-477
FAILURE CODE [CA3232] ............................................................................................................40-480
FAILURE CODE [CA3235] ............................................................................................................40-485
FAILURE CODE [CA3239] ............................................................................................................40-488
FAILURE CODE [CA3241] ............................................................................................................40-491
FAILURE CODE [CA3242] ............................................................................................................40-493
FAILURE CODE [CA3251] ............................................................................................................40-496
FAILURE CODE [CA3253] ............................................................................................................40-498
FAILURE CODE [CA3254] ............................................................................................................40-502
FAILURE CODE [CA3255] ............................................................................................................40-506
FAILURE CODE [CA3256] ............................................................................................................40-509
FAILURE CODE [CA3311] ............................................................................................................40-512
FAILURE CODE [CA3312] ............................................................................................................40-515
FAILURE CODE [CA3313] ............................................................................................................40-518
FAILURE CODE [CA3314] ............................................................................................................40-519
FAILURE CODE [CA3315] ............................................................................................................40-520
FAILURE CODE [CA3316] ............................................................................................................40-523
FAILURE CODE [CA3317] ............................................................................................................40-524
FAILURE CODE [CA3318] ............................................................................................................40-525
FAILURE CODE [CA3319] ............................................................................................................40-528
FAILURE CODE [CA3321] ............................................................................................................40-530
FAILURE CODE [CA3322] ............................................................................................................40-532
FAILURE CODE [CA3419] ............................................................................................................40-535
FAILURE CODE [CA3421] ............................................................................................................40-537
FAILURE CODE [CA3497] ............................................................................................................40-539
FAILURE CODE [CA3498] ............................................................................................................40-540
FAILURE CODE [CA3543] ............................................................................................................40-541
FAILURE CODE [CA3545] ............................................................................................................40-547
FAILURE CODE [CA3547] ............................................................................................................40-549
FAILURE CODE [CA3558] ............................................................................................................40-550
FAILURE CODE [CA3559] ............................................................................................................40-552
FAILURE CODE [CA3562] ............................................................................................................40-554
FAILURE CODE [CA3563] ............................................................................................................40-556
FAILURE CODE [CA3567] ............................................................................................................40-559
FAILURE CODE [CA3568] ............................................................................................................40-562
FAILURE CODE [CA3571] ............................................................................................................40-567
FAILURE CODE [CA3572] ............................................................................................................40-569
FAILURE CODE [CA3574] ............................................................................................................40-571
FAILURE CODE [CA3575] ............................................................................................................40-574
FAILURE CODE [CA3577] ............................................................................................................40-576
FAILURE CODE [CA3578] ............................................................................................................40-578
FAILURE CODE [CA3582] ............................................................................................................40-580
FAILURE CODE [CA3583] ............................................................................................................40-589
FAILURE CODE [CA3596] ............................................................................................................40-591
FAILURE CODE [CA3649] ............................................................................................................40-595
FAILURE CODE [CA3681] ............................................................................................................40-598
FAILURE CODE [CA3682] ............................................................................................................40-603
FAILURE CODE [CA3713] ............................................................................................................40-608
FAILURE CODE [CA3717] ............................................................................................................40-611
FAILURE CODE [CA3718] ............................................................................................................40-612
FAILURE CODE [CA3725] ............................................................................................................40-613
INDEX 00 INDEX AND FOREWORD
00-8 PC238USLC-11
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FAILURE CODE [CA3741] ............................................................................................................40-616
FAILURE CODE [CA3748] ............................................................................................................40-617
FAILURE CODE [CA3751] ............................................................................................................40-620
FAILURE CODE [CA3755] ............................................................................................................40-622
FAILURE CODE [CA3866] ............................................................................................................40-624
FAILURE CODE [CA3867] ............................................................................................................40-628
FAILURE CODE [CA3868] ............................................................................................................40-631
FAILURE CODE [CA3899] ............................................................................................................40-636
FAILURE CODE [CA3911] ............................................................................................................40-638
FAILURE CODE [CA3912] ............................................................................................................40-643
FAILURE CODE [CA3932] ............................................................................................................40-645
FAILURE CODE [CA3933] ............................................................................................................40-647
FAILURE CODE [CA3934] ............................................................................................................40-649
FAILURE CODE [CA3935] ............................................................................................................40-652
FAILURE CODE [CA3936] ............................................................................................................40-654
FAILURE CODE [CA4151] ............................................................................................................40-656
FAILURE CODE [CA4152] ............................................................................................................40-662
FAILURE CODE [CA4155] ............................................................................................................40-667
FAILURE CODE [CA4156] ............................................................................................................40-669
FAILURE CODE [CA4157] ............................................................................................................40-672
FAILURE CODE [CA4158] ............................................................................................................40-674
FAILURE CODE [CA4159] ............................................................................................................40-675
FAILURE CODE [CA4161] ............................................................................................................40-676
FAILURE CODE [CA4162] ............................................................................................................40-679
FAILURE CODE [CA4163] ............................................................................................................40-682
FAILURE CODE [CA4164] ............................................................................................................40-683
FAILURE CODE [CA4165] ............................................................................................................40-685
FAILURE CODE [CA4166] ............................................................................................................40-687
FAILURE CODE [CA4168] ............................................................................................................40-689
FAILURE CODE [CA4169] ............................................................................................................40-693
FAILURE CODE [CA4171] ............................................................................................................40-697
FAILURE CODE [CA4249] ............................................................................................................40-701
FAILURE CODE [CA4251] ............................................................................................................40-705
FAILURE CODE [CA4259] ............................................................................................................40-709
FAILURE CODE [CA4261] ............................................................................................................40-712
FAILURE CODE [CA4277] ............................................................................................................40-715
FAILURE CODE [CA4281] ............................................................................................................40-717
FAILURE CODE [CA4459] ............................................................................................................40-720
FAILURE CODE [CA4461] ............................................................................................................40-722
FAILURE CODE [CA4658] ............................................................................................................40-725
FAILURE CODE [CA4731] ............................................................................................................40-728
FAILURE CODE [CA4732] ............................................................................................................40-729
FAILURE CODE [CA4739] ............................................................................................................40-730
FAILURE CODE [CA4768] ............................................................................................................40-731
FAILURE CODE [CA4769] ............................................................................................................40-733
FAILURE CODE [CA4842] ............................................................................................................40-736
FAILURE CODE [CA4952] ............................................................................................................40-739
FAILURE CODE [CA5115] ............................................................................................................40-741
FAILURE CODE [CA5179] ............................................................................................................40-744
FAILURE CODE [CA5181] ............................................................................................................40-746
FAILURE CODE [CA5383] ............................................................................................................40-748
FAILURE CODE [D110KB]............................................................................................................40-750
FAILURE CODE [D19JKZ] ............................................................................................................40-752
FAILURE CODE [D811MC] ...........................................................................................................40-755
FAILURE CODE [D862KA]............................................................................................................40-756
FAILURE CODE [D8ALKA] ...........................................................................................................40-757
FAILURE CODE [D8ALKB] ...........................................................................................................40-759
FAILURE CODE [D8AQKR] ..........................................................................................................40-761
00 INDEX AND FOREWORD INDEX
PC238USLC-11 00-9
FAILURE CODE [DA20MC] ..........................................................................................................40-765
FAILURE CODE [DA22KK] ...........................................................................................................40-766
FAILURE CODE [DA25KP] ...........................................................................................................40-769
FAILURE CODE [DA29KQ]...........................................................................................................40-772
FAILURE CODE [DA2LKA] ...........................................................................................................40-775
FAILURE CODE [DA2LKB] ...........................................................................................................40-777
FAILURE CODE [DA2QKR] ..........................................................................................................40-779
FAILURE CODE [DA2RKR] ..........................................................................................................40-784
FAILURE CODE [DAF0KM] ..........................................................................................................40-789
FAILURE CODE [DAF0MB] ..........................................................................................................40-790
FAILURE CODE [DAF0MC] ..........................................................................................................40-791
FAILURE CODE [DAF8KB] ...........................................................................................................40-792
FAILURE CODE [DAF9KQ]...........................................................................................................40-794
FAILURE CODE [DAFGMC] .........................................................................................................40-795
FAILURE CODE [DAFLKA] ...........................................................................................................40-796
FAILURE CODE [DAFLKB] ...........................................................................................................40-798
FAILURE CODE [DAFQKR] ..........................................................................................................40-800
FAILURE CODE [DAZ9KQ]...........................................................................................................40-804
FAILURE CODE [DAZQKR] ..........................................................................................................40-805
FAILURE CODE [DB2QKR] ..........................................................................................................40-809
FAILURE CODE [DB2RKR] ..........................................................................................................40-814
FAILURE CODE [DBP0KM] ..........................................................................................................40-820
FAILURE CODE [DBP0KT] ...........................................................................................................40-821
FAILURE CODE [DBPQKR]..........................................................................................................40-822
FAILURE CODE [DDNRKA]..........................................................................................................40-827
FAILURE CODE [DDNRKY]..........................................................................................................40-829
FAILURE CODE [DDNS00]...........................................................................................................40-831
FAILURE CODE [DFB1KZ] ...........................................................................................................40-833
FAILURE CODE [DFB2KZ] ...........................................................................................................40-835
FAILURE CODE [DFB3L8]............................................................................................................40-837
FAILURE CODE [DFB4L8]............................................................................................................40-839
FAILURE CODE [DFB5KZ] ...........................................................................................................40-841
FAILURE CODE [DFB6KZ] ...........................................................................................................40-843
FAILURE CODE [DGH2KA] ..........................................................................................................40-845
FAILURE CODE [DGH2KB] ..........................................................................................................40-847
FAILURE CODE [DHA4KA]...........................................................................................................40-849
FAILURE CODE [DHAAMA]..........................................................................................................40-851
FAILURE CODE [DHACMA] .........................................................................................................40-853
FAILURE CODE [DHPAMA]..........................................................................................................40-855
FAILURE CODE [DHPBMA]..........................................................................................................40-857
FAILURE CODE [DHS3MA] ..........................................................................................................40-859
FAILURE CODE [DHS4MA] ..........................................................................................................40-861
FAILURE CODE [DHS8MA] ..........................................................................................................40-863
FAILURE CODE [DHS9MA] ..........................................................................................................40-865
FAILURE CODE [DHSAMA]..........................................................................................................40-867
FAILURE CODE [DHSBMA]..........................................................................................................40-869
FAILURE CODE [DHSCMA] .........................................................................................................40-871
FAILURE CODE [DHSDMA] .........................................................................................................40-873
FAILURE CODE [DHSFMA]..........................................................................................................40-875
FAILURE CODE [DHSGMA] .........................................................................................................40-877
FAILURE CODE [DHSHMA] .........................................................................................................40-879
FAILURE CODE [DHSJMA] ..........................................................................................................40-881
FAILURE CODE [DHX1MA] ..........................................................................................................40-883
FAILURE CODE [DKR0MA] ..........................................................................................................40-884
FAILURE CODE [DKR1MA] ..........................................................................................................40-887
FAILURE CODE [DKULKA]...........................................................................................................40-890
FAILURE CODE [DKULKB]...........................................................................................................40-892
FAILURE CODE [DKULKY]...........................................................................................................40-894
INDEX 00 INDEX AND FOREWORD
00-10 PC238USLC-11
FAILURE CODE [DLM5KA]...........................................................................................................40-896
FAILURE CODE [DLM5MB] ..........................................................................................................40-898
FAILURE CODE [DR10KA] ...........................................................................................................40-901
FAILURE CODE [DR21KX] ...........................................................................................................40-904
FAILURE CODE [DR31KX] ...........................................................................................................40-906
FAILURE CODE [DUMBKA]..........................................................................................................40-908
FAILURE CODE [DUMBKB]..........................................................................................................40-910
FAILURE CODE [DV20KB] ...........................................................................................................40-912
FAILURE CODE [DW43KA] ..........................................................................................................40-914
FAILURE CODE [DW43KB] ..........................................................................................................40-916
FAILURE CODE [DW43KY] ..........................................................................................................40-918
FAILURE CODE [DW45KA] ..........................................................................................................40-920
FAILURE CODE [DW45KB] ..........................................................................................................40-923
FAILURE CODE [DW45KY] ..........................................................................................................40-926
FAILURE CODE [DW4CKY]..........................................................................................................40-928
FAILURE CODE [DW4GKA] .........................................................................................................40-930
FAILURE CODE [DW91KA] ..........................................................................................................40-932
FAILURE CODE [DW91KB] ..........................................................................................................40-934
FAILURE CODE [DW91KY] ..........................................................................................................40-936
FAILURE CODE [DWA2KA] ..........................................................................................................40-938
FAILURE CODE [DWA2KB] ..........................................................................................................40-940
FAILURE CODE [DWA2KY] ..........................................................................................................40-942
FAILURE CODE [DWK0KA]..........................................................................................................40-944
FAILURE CODE [DWK0KB]..........................................................................................................40-946
FAILURE CODE [DWK0KY]..........................................................................................................40-948
FAILURE CODE [DWK2KA]..........................................................................................................40-950
FAILURE CODE [DWK2KB]..........................................................................................................40-952
FAILURE CODE [DWK2KY]..........................................................................................................40-954
FAILURE CODE [DWK8KA]..........................................................................................................40-956
FAILURE CODE [DWK8KB]..........................................................................................................40-958
FAILURE CODE [DWK8KY]..........................................................................................................40-960
FAILURE CODE [DWN5KY]..........................................................................................................40-962
FAILURE CODE [DXA8KA]...........................................................................................................40-964
FAILURE CODE [DXA8KB]...........................................................................................................40-966
FAILURE CODE [DXA9KA]...........................................................................................................40-968
FAILURE CODE [DXA9KB]...........................................................................................................40-970
FAILURE CODE [DXE0KA]...........................................................................................................40-972
FAILURE CODE [DXE0KB]...........................................................................................................40-974
FAILURE CODE [DXE4KA]...........................................................................................................40-976
FAILURE CODE [DXE4KB]...........................................................................................................40-978
FAILURE CODE [DXE4KY]...........................................................................................................40-980
FAILURE CODE [DXE5KA]...........................................................................................................40-982
FAILURE CODE [DXE5KB]...........................................................................................................40-984
FAILURE CODE [DXE6KA]...........................................................................................................40-986
FAILURE CODE [DXE6KB]...........................................................................................................40-988
FAILURE CODE [DXE7KA]...........................................................................................................40-990
FAILURE CODE [DXE7KB]...........................................................................................................40-992
FAILURE CODE [DXE7KY]...........................................................................................................40-994
FAILURE CODE [DXE8KA]...........................................................................................................40-996
FAILURE CODE [DXE8KB]...........................................................................................................40-998
FAILURE CODE [DXE8KY].........................................................................................................40-1000
FAILURE CODE [DXE9KA].........................................................................................................40-1002
FAILURE CODE [DXE9KB].........................................................................................................40-1004
FAILURE CODE [DXE9KY].........................................................................................................40-1006
FAILURE CODE [DXEAKA] ........................................................................................................40-1008
FAILURE CODE [DXEAKB] ........................................................................................................40-1010
FAILURE CODE [DXEAKY] ........................................................................................................40-1012
FAILURE CODE [DY20KA] .........................................................................................................40-1014
00 INDEX AND FOREWORD INDEX
PC238USLC-11 00-11
FAILURE CODE [DY20MA].........................................................................................................40-1016
FAILURE CODE [DY2CKB].........................................................................................................40-1018
FAILURE CODE [DY2DKB].........................................................................................................40-1020
FAILURE CODE [DY2EKB].........................................................................................................40-1022
TROUBLESHOOTING OF ELECTRICAL SYSTEM (E-MODE) .........................................................40-1024
E-1 ENGINE DOES NOT START (ENGINE DOES NOT CRANK) ..............................................40-1024
E-2 MANUAL PREHEATING SYSTEM DOES NOT WORK........................................................40-1030
E-3 AUTOMATIC PREHEATING SYSTEM DOES NOT WORK ..................................................40-1033
E-4 WHILE PREHEATING IS WORKING, PREHEATING MONITOR DOES NOT LIGHT UP.....40-1035
E-5 WHEN STARTING SWITCH IS TURNED TO ON POSITION, MACHINE MONITOR DISPLAYS
NOTHING................................................................................................................................40-1037
E-6 WHILE STARTING SWITCH IS TURNED TO ON POSITION (WITH ENGINE STOPPED), EN-
GINE OIL LEVEL MONITOR LIGHTS UP IN YELLOW ...........................................................40-1040
E-7 WHILE STARTING SWITCH IS TURNED TO ON POSITION (WITH ENGINE STOPPED), RADIA-
TOR COOLANT LEVEL MONITOR LIGHTS UP IN YELLOW .................................................40-1041
E-8 ENGINE COOLANT TEMPERATURE MONITOR LIGHTS UP IN WHITE WHILE ENGINE IS RUN-
NING .......................................................................................................................................40-1042
E-9 HYDRAULIC OIL TEMPERATURE MONITOR LIGHTS UP IN WHITE WHILE ENGINE IS RUN-
NING .......................................................................................................................................40-1043
E-10 AIR CLEANER CLOGGING MONITOR LIGHTS UP IN YELLOW WHILE ENGINE IS RUNNING...
................................................................................................................................................40-1044
E-11 CHARGE LEVEL MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUNNING..............40-1045
E-12 FUEL LEVEL MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUNNING....................40-1046
E-13 WATER SEPARATOR MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUNNING ......40-1047
E-14 ENGINE COOLANT TEMPERATURE MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUN-
NING .......................................................................................................................................40-1048
E-15 ENGINE OIL PRESSURE MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUNNING 40-1049
E-16 HYDRAULIC OIL TEMPERATURE MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUN-
NING .......................................................................................................................................40-1050
E-17 FUEL GAUGE DISPLAY DOES NOT MOVE FROM MINIMUM OR MAXIMUM .................40-1051
E-18 DISPLAY OF FUEL GAUGE DIFFERS FROM ACTUAL FUEL LEVEL...............................40-1053
E-19 ENGINE COOLANT TEMPERATURE GAUGE DISPLAY DOES NOT MOVE FROM MINIMUM
OR MAXIMUM.........................................................................................................................40-1054
E-20 DISPLAY OF ENGINE COOLANT TEMPERATURE GAUGE DIFFERS FROM ACTUAL COOL-
ANT TEMPERATURE..............................................................................................................40-1055
E-21 HYDRAULIC OIL TEMPERATURE GAUGE DISPLAY DOES NOT MOVE FROM MINIMUM OR
MAXIMUM ...............................................................................................................................40-1056
E-22 DISPLAY OF HYDRAULIC OIL TEMPERATURE GAUGE DIFFERS FROM ACTUAL OIL TEM-
PERATURE .............................................................................................................................40-1058
E-23 SOME AREAS OF MACHINE MONITOR SCREEN ARE NOT DISPLAYED ......................40-1059
E-24 FUNCTION SWITCH DOES NOT OPERATE .....................................................................40-1060
E-25 AUTOMATIC WARM-UP SYSTEM DOES NOT WORK (IN COLD WEATHER)..................40-1061
E-26 WHEN AUTO-DECELERATOR SWITCH IS OPERATED, AUTO-DECELERATOR MONITOR
DOES NOT LIGHT UP OR DOES NOT GO OFF ....................................................................40-1062
E-27 AUTO-DECELERATOR IS NOT OPERATED OR CANCELED WITH LEVER ....................40-1063
E-28 WHEN WORKING MODE SWITCH IS OPERATED, WORKING MODE SELECTION SCREEN IS
NOT DISPLAYED ....................................................................................................................40-1064
E-29 WHEN WORKING MODE IS CHANGED, SETTING OF ENGINE AND HYDRAULIC PUMP IS
NOT CHANGED......................................................................................................................40-1065
E-30 WHEN TRAVEL SPEED SWITCH IS OPERATED, TRAVEL SPEED MONITOR DOES NOT
CHANGE.................................................................................................................................40-1066
E-31 WHEN TRAVEL SPEED SELECTION IS CHANGED, ACTUAL TRAVEL SPEED DOES NOT
CHANGE.................................................................................................................................40-1067
E-32 ALARM BUZZER CANNOT BE CANCELED ......................................................................40-1069
E-33 SERVICE METER IS NOT DISPLAYED, WHILE STARTING SWITCH IS IN OFF POSITION.........
................................................................................................................................................40-1070
E-34 SERVICE MODE CANNOT BE SELECTED.......................................................................40-1071
E-35 ALL OF WORK EQUIPMENTS, SWING, AND TRAVEL MECHANISM DO NOT MOVE ....40-1072
INDEX 00 INDEX AND FOREWORD
00-12 PC238USLC-11
E-36 ALL OF WORK EQUIPMENT, SWING, AND TRAVEL MECHANISM DO NOT LOCK........40-1075
E-37 WHEN SWING BRAKE CANCEL SWITCH IS SET TO CANCEL POSITION, MACHINE CANNOT
SWING ....................................................................................................................................40-1077
E-38 WHEN SWING BRAKE CANCEL SWITCH IS SET TO NORMAL POSITION, SWING HOLDING
BRAKE DOES NOT OPERATE ...............................................................................................40-1080
E-39 ONE-TOUCH POWER MAXIMIZING FUNCTION DOES NOT OPERATE PROPERLY, OR INDI-
CATOR NOT DISPLAYED ON MONITOR ...............................................................................40-1082
E-40 ONE-TOUCH POWER MAXIMIZING FUNCTION IS NOT CANCELLED ...........................40-1084
E-41 ALARM DOES NOT SOUND DURING TRAVEL ................................................................40-1085
E-42 ALARM DOES NOT STOP SOUNDING WHILE MACHINE IS STOPPED..........................40-1087
E-43 HORN DOES NOT SOUND................................................................................................40-1088
E-44 HORN DOES NOT STOP SOUNDING...............................................................................40-1091
E-45 WHEN WIPER SWITCH IS OPERATED, WIPER MONITOR DOES NOT LIGHT UP OR GO OFF.
................................................................................................................................................40-1093
E-46 WHEN WIPER SWITCH IS OPERATED, WINDSHIELD WIPER DOES NOT OPERATE...40-1094
E-47 WHEN WINDOW WASHER SWITCH IS OPERATED, WINDOW WASHER DOES NOT OPER-
ATE .........................................................................................................................................40-1096
E-48 BOOM RAISE INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION ...
................................................................................................................................................40-1097
E-49 BOOM LOWER INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION .
................................................................................................................................................40-1098
E-50 ARM OUT INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION..........
................................................................................................................................................40-1099
E-51 ARM IN INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION 40-1100
E-52 BUCKET DUMP INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION
................................................................................................................................................40-1101
E-53 BUCKET CURL INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION.
................................................................................................................................................40-1102
E-54 SWING INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION.40-1103
E-55 TRAVEL INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION40-1104
E-56 SERVICE INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION ..........
................................................................................................................................................40-1105
E-57 ATTACHMENT HYDRAULIC CIRCUIT CANNOT BE CHANGED.......................................40-1107
E-58 KOMTRAX SYSTEM DOES NOT OPERATE NORMALLY .................................................40-1109
TROUBLESHOOTING FOR HYDRAULIC AND MECHANICAL SYSTEMS (H MODE) ..................... 40-1110
INFORMATION MENTIONED IN TROUBLESHOOTING TABLE (H MODE)............................... 40-1110
SYSTEM CHART OF HYDRAULIC AND MECHANICAL SYSTEMS .......................................... 40-1111
FAILURE MODE AND CAUSE TABLE........................................................................................ 40-1113
H-1 ALL WORK EQUIPMENT, SWING AND TRAVEL DO NOT WORK......................................40-1125
H-2 ALL WORK EQUIPMENT, SWING AND TRAVEL LACK SPEED AND POWER ..................40-1126
H-3 FINE CONTROL PERFORMANCE OR RESPONSE IS POOR............................................40-1128
H-4 UNUSUAL NOISE IS HEARD FROM AROUND HYDRAULIC PUMP ..................................40-1129
H-5 ENGINE SPEED DROPS LARGELY OR ENGINE STOPS ..................................................40-1130
H-6 SPEED OR POWER OF BOOM IS LOW .............................................................................40-1132
H-7 ARM SPEED OR POWER IS LOW ......................................................................................40-1137
H-8 BUCKET SPEED OR POWER IS LOW................................................................................40-1142
H-9 WORK EQUIPMENT DOES NOT MOVE IN SINGLE OPERATION .....................................40-1145
H-10 HYDRAULIC DRIFT OF BOOM IS LARGE ........................................................................40-1146
H-11 HYDRAULIC DRIFT OF ARM IS LARGE ...........................................................................40-1148
H-12 HYDRAULIC DRIFT OF BUCKET IS LARGE.....................................................................40-1150
H-13 WHEN SINGLE WORK EQUIPMENT IS RELIEVED HYDRAULICALLY, OTHER WORK EQUIP-
MENT MOVES ........................................................................................................................40-1151
H-14 TIME LAG OF WORK EQUIPMENT IS LARGE .................................................................40-1152
H-15 ONE-TOUCH POWER MAXIMIZING FUNCTION DOES NOT OPERATE .........................40-1153
H-16 ATTACHMENT CIRCUIT CANNOT BE CHANGED............................................................40-1154
H-17 OIL FLOW IN ATTACHMENT CIRCUIT CANNOT BE CHANGED .....................................40-1155
H-18 IN COMBINED OPERATION OF WORK EQUIPMENT, EQUIPMENT HAVING HEAVIER LOAD
MOVES SLOWER ...................................................................................................................40-1156
00 INDEX AND FOREWORD INDEX
PC238USLC-11 00-13
H-19 IN COMBINED OPERATION OF SWING AND TRAVEL, TRAVEL SPEED DROPS LARGELY ......
................................................................................................................................................40-1157
H-20 IN COMBINED OPERATION OF SWING AND BOOM RAISE, BOOM RISING SPEED IS LOW ....
................................................................................................................................................40-1158
H-21 MACHINE DOES NOT TRAVEL STRAIGHT ......................................................................40-1159
H-22 MACHINE IS NOT STEERED WELL OR STEERING POWER IS LOW.............................40-1161
H-23 TRAVEL SPEED IS LOW ...................................................................................................40-1164
H-24 ONE OF TRACKS DOES NOT RUN ..................................................................................40-1166
H-25 TRAVEL SPEED DOES NOT CHANGE, OR TRAVEL SPEED IS TOO SLOW OR FAST ..40-1167
H-26 UPPER STRUCTURE DOES NOT SWING BOTH TO THE RIGHT AND LEFT .................40-1168
H-27 SWINGS ONLY IN ONE DIRECTION.................................................................................40-1169
H-28 SWING ACCELERATION OR SWING SPEED IS LOW IN BOTH DIRECTIONS (RIGHT AND
LEFT) ......................................................................................................................................40-1170
H-29 SWING ACCELERATION PERFORMANCE IS POOR OR SWING SPEED IS SLOW IN ONLY
ONE DIRECTION ....................................................................................................................40-1171
H-30 UPPER STRUCTURE OVERRUNS EXCESSIVELY WHEN IT STOPS SWINGING (BOTH
RIGHT AND LEFT)..................................................................................................................40-1172
H-31 UPPER STRUCTURE OVERRUNS EXCESSIVELY WHEN IT STOPS SWINGING (ONLY ONE
DIRECTION EITHER RIGHT OR LEFT)..................................................................................40-1173
H-32 SHOCK IS LARGE WHEN UPPER STRUCTURE STOPS SWINGING .............................40-1174
H-33 LARGE UNUSUAL NOISE IS HEARD WHEN UPPER STRUCTURE STOPS SWINGING 40-1175
H-34 SWING DRIFT ON A SLOPE IS LARGE (WHILE SWING PARKING BRAKE IS APPLIED)40-1176
H-35 SWING DRIFT ON A SLOPE IS LARGE (WHILE SWING PARKING BRAKE IS RELEASED) ........
................................................................................................................................................40-1177
H-36 FAN SPEED IS ABNORMAL (TOO HIGH OR LOW, OR STATIONARY) ............................40-1178
H-37 UNUSUAL NOISE IS HEARD FROM AROUND FAN .........................................................40-1179
TROUBLESHOOTING OF ENGINE (S-MODE) .................................................................................40-1180
INFORMATION MENTIONED IN TROUBLESHOOTING TABLE (S MODE)...............................40-1180
S-1 ENGINE DOES NOT CRANK WHEN STARTING SWITCH IS TURNED TO START POSITION.......
................................................................................................................................................40-1181
S-2 ENGINE CRANKS BUT NO EXHAUST GAS COMES OUT .................................................40-1182
S-3 FUEL IS BEING INJECTED BUT ENGINE DOES NOT START (MISFIRING: ENGINE CRANKS
BUT DOES NOT START) ........................................................................................................40-1183
S-4 ENGINE STARTABILITY IS POOR.......................................................................................40-1185
S-5 ENGINE DOES NOT PICK UP SMOOTHLY ........................................................................40-1187
S-6 ENGINE STOPS DURING OPERATION ..............................................................................40-1189
S-7 ENGINE RUNS ROUGH OR IS UNSTABLE ........................................................................40-1191
S-8 ENGINE LACKS POWER.....................................................................................................40-1192
S-9 KDPF GETS CLOGGED IN A SHORT TIME........................................................................40-1194
S-10 ENGINE OIL CONSUMPTION IS EXCESSIVE ..................................................................40-1196
S-11 OIL BECOMES CONTAMINATED QUICKLY ......................................................................40-1197
S-12 FUEL CONSUMPTION IS EXCESSIVE .............................................................................40-1198
S-13 OIL IS IN COOLANT (OR COOLANT SPURTS BACK OR COOLANT LEVEL GOES DOWN) .......
................................................................................................................................................40-1199
S-14 OIL PRESSURE DROPS ...................................................................................................40-1200
S-15 FUEL MIXES INTO ENGINE OIL........................................................................................40-1202
S-16 WATER MIXES INTO ENGINE OIL (MILKY) ......................................................................40-1203
S-17 COOLANT TEMPERATURE RISES TOO HIGH (OVERHEATING) ....................................40-1204
S-18 UNUSUAL NOISE IS HEARD.............................................................................................40-1205
S-19 VIBRATION IS EXCESSIVE ...............................................................................................40-1206
S-20 AIR CANNOT BE BLED FROM FUEL CIRCUIT.................................................................40-1207
S-21 ACTIVE REGENERATION IS EXECUTED FREQUENTLY ................................................40-1208
S-22 ACTIVE REGENERATION TAKES TIME............................................................................40-1210
S-23 WHITE SMOKE IS EXHAUSTED DURING ACTIVE REGENERATION..............................40-1211
S-24 AdBlue/DEF CONSUMPTION IS EXCESSIVE ...................................................................40-1212
S-25 THERE IS UNUSUAL SMELL (IRRITATING ODOR) ..........................................................40-1214
S-26 FOREIGN MATERIALS ENTER AdBlue/DEF (AdBlue/DEF INCREASES).........................40-1215
50 DISASSEMBLY AND ASSEMBLY............................................................................................................. 50-1
INDEX 00 INDEX AND FOREWORD
00-14 PC238USLC-11
CONTENTS ............................................................................................................................................ 50-2
ABBREVIATION LIST ............................................................................................................................. 50-7
RELATED INFORMATION ON DISASSEMBLY AND ASSEMBLY ........................................................ 50-13
HOW TO READ THIS MANUAL..................................................................................................... 50-13
COATING MATERIALS LIST.......................................................................................................... 50-15
SPECIAL TOOLS LIST .................................................................................................................. 50-19
SKETCHES OF SPECIAL TOOLS................................................................................................. 50-38
ENGINE AND COOLING SYSTEM....................................................................................................... 50-44
REMOVE AND INSTALL SUPPLY PUMP ASSEMBLY .................................................................. 50-44
REMOVE AND INSTALL INJECTOR ASSEMBLY ......................................................................... 50-50
REMOVE AND INSTALL CYLINDER HEAD ASSEMBLY .............................................................. 50-66
REMOVE AND INSTALL EGR VALVE ASSEMBLY........................................................................ 50-92
REMOVE AND INSTALL EGR COOLER ASSEMBLY.................................................................... 50-95
REMOVE AND INSTALL STARTER ASSEMBLY..........................................................................50-102
REMOVE AND INSTALL ALTERNATOR BELT .............................................................................50-107
REMOVE AND INSTALL RADIATOR ASSEMBLY ........................................................................50-113
REMOVE AND INSTALL HYDRAULIC OIL COOLER ASSEMBLY ...............................................50-120
REMOVE AND INSTALL AFTERCOOLER ASSEMBLY................................................................50-134
REMOVE AND INSTALL FAN CLUTCH ASSEMBLY....................................................................50-138
REMOVE AND INSTALL ENGINE ASSEMBLY.............................................................................50-148
REMOVE AND INSTALL ENGINE FRONT OIL SEAL ..................................................................50-170
REMOVE AND INSTALL ENGINE REAR OIL SEAL.....................................................................50-180
REMOVE AND INSTALL FUEL COOLER ASSEMBLY .................................................................50-184
REMOVE AND INSTALL ENGINE HOOD ASSEMBLY .................................................................50-188
REMOVE AND INSTALL FUEL TANK ASSEMBLY .......................................................................50-191
REMOVE AND INSTALL AdBlue/DEF TANK ASSEMBLY ............................................................50-204
REMOVE AND INSTALL AdBlue/DEF TANK SENSOR FLANGE ASSEMBLY..............................50-218
REMOVE AND INSTALL AdBlue/DEF TANK SENSOR ................................................................50-231
REMOVE AND INSTALL AdBlue/DEF TANK STRAINER .............................................................50-234
REMOVE AND INSTALL KDPF ASSEMBLY.................................................................................50-235
DISASSEMBLE AND ASSEMBLE OF KDPF ASSEMBLY ............................................................50-243
REMOVE AND INSTALL SCR ASSEMBLY...................................................................................50-252
REMOVE AND INSTALL KDPF, SCR ASSEMBLY........................................................................50-256
REMOVE AND INSTALL KDPF, SCR ASSEMBLY BRACKET ......................................................50-276
REMOVE AND INSTALL BELLOWS PIPE ASSEMBLY ................................................................50-279
REMOVE AND INSTALL KCCV ASSEMBLY ................................................................................50-283
REMOVE AND INSTALL AdBlue/DEF MIXING TUBE ..................................................................50-285
REMOVE AND INSTALL AdBlue/DEF INJECTOR........................................................................50-296
REMOVE AND INSTALL AdBlue/DEF PUMP ...............................................................................50-305
REMOVE AND INSTALL AdBlue/DEF HOSE ...............................................................................50-313
REMOVE AND INSTALL AIR CLEANER ASSEMBLY...................................................................50-334
REMOVE AND INSTALL AIR CONDITIONER COMPRESSOR ASSEMBLY ................................50-340
REMOVE AND INSTALL AIR CONDITIONER CONDENSER ASSEMBLY ...................................50-346
POWER TRAIN....................................................................................................................................50-348
REMOVE AND INSTALL TRAVEL MOTOR AND FINAL DRIVE ASSEMBLY ...............................50-348
DISASSEMBLE AND ASSEMBLE FINAL DRIVE ASSEMBLY......................................................50-350
REMOVE AND INSTALL SWING MOTOR AND SWING MACHINERY ASSEMBLY.....................50-362
DISASSEMBLE AND ASSEMBLE SWING MACHINERY ASSEMBLY .........................................50-366
REMOVE AND INSTALL SWING CIRCLE ASSEMBLY ................................................................50-377
UNDERCARRIAGE AND FRAME........................................................................................................50-379
SEPARATION AND CONNECTION OF TRACK ASSEMBLY........................................................50-379
REMOVE AND INSTALL SPROCKET ..........................................................................................50-383
REMOVE AND INSTALL IDLER AND IDLER CUSHION ASSEMBLY...........................................50-385
DISASSEMBLE AND ASSEMBLE IDLER ASSEMBLY .................................................................50-387
DISASSEMBLE AND ASSEMBLE OF IDLER CUSHION ASSEMBLY ..........................................50-392
DISASSEMBLE AND ASSEMBLE TRACK ROLLER ASSEMBLY ................................................50-395
REMOVE AND INSTALL REVOLVING FRAME ASSEMBLY ........................................................50-398
REMOVE AND INSTALL COUNTERWEIGHT ASSEMBLY...........................................................50-403
00 INDEX AND FOREWORD INDEX
PC238USLC-11 00-15
REMOVE AND INSTALL COUNTERWEIGHT ASSEMBLY FOR MAINTENANCE .......................50-413
HYDRAULIC SYSTEM.........................................................................................................................50-422
REMOVE AND INSTALL CENTER SWIVEL JOINT ASSEMBLY ..................................................50-422
DISASSEMBLE AND ASSEMBLE CENTER SWIVEL JOINT ASSEMBLY ...................................50-426
REMOVE AND INSTALL HYDRAULIC TANK ASSEMBLY............................................................50-429
REMOVE AND INSTALL MAIN PUMP ASSEMBLY ......................................................................50-446
REMOVE AND INSTALL CONTROL VALVE ASSEMBLY .............................................................50-456
DISASSEMBLE AND ASSEMBLE CONTROL VALVE ASSEMBLY ..............................................50-484
DISASSEMBLE AND ASSEMBLE WORK EQUIPMENT PPC VALVE ASSEMBLY ......................50-490
DISASSEMBLE AND ASSEMBLE TRAVEL PPC VALVE ASSEMBLY ..........................................50-493
WORK EQUIPMENT............................................................................................................................50-496
REMOVE AND INSTALL WORK EQUIPMENT ASSEMBLY .........................................................50-496
DISASSEMBLE AND ASSEMBLE WORK EQUIPMENT CYLINDER ASSEMBLY........................50-503
CAB AND ITS ATTACHMENTS ...........................................................................................................50-512
REMOVE AND INSTALL OPERATOR'S CAB ASSEMBLY ...........................................................50-512
REMOVE AND INSTALL OPERATOR'S CAB DOOR ...................................................................50-522
REMOVE AND INSTALL OPERATOR CAB GLASS (ADHERED GLASS) ....................................50-527
REMOVE AND INSTALL FRONT WINDOW ASSEMBLY .............................................................50-540
REMOVE AND INSTALL FLOOR FRAME ASSEMBLY.................................................................50-548
REMOVE AND INSTALL AIR CONDITIONER UNIT ASSEMBLY .................................................50-560
REMOVE AND INSTALL OPERATOR'S SEAT .............................................................................50-570
REMOVE AND INSTALL SEAT BELT ...........................................................................................50-572
REMOVE AND INSTALL FRONT WIPER ASSEMBLY .................................................................50-574
ELECTRICAL SYSTEM .......................................................................................................................50-588
REMOVE AND INSTALL ENGINE CONTROLLER ASSEMBLY ...................................................50-588
REMOVE AND INSTALL PUMP CONTROLLER ASSEMBLY.......................................................50-592
REMOVE AND INSTALL KomVision CONTROLLER ASSEMBLY ................................................50-597
REMOVE AND INSTALL MACHINE MONITOR ASSEMBLY ........................................................50-600
REMOVE AND INSTALL MASS AIR FLOW AND TEMPERATURE SENSOR ..............................50-606
REMOVE AND INSTALL KCCV CRANKCASE PRESSURE SENSOR.........................................50-609
REMOVE AND INSTALL SCR TEMPERATURE SENSOR ...........................................................50-613
REMOVE AND INSTALL KomVision CAMERA.............................................................................50-619
REMOVE AND INSTALL KOMTRAX TERMINAL ASSEMBLY......................................................50-624
60 MAINTENANCE STANDARD.................................................................................................................... 60-1
CONTENTS ............................................................................................................................................ 60-2
ABBREVIATION LIST ............................................................................................................................. 60-3
ENGINE AND COOLING SYSTEM......................................................................................................... 60-9
MAINTENANCE STANDARD OF ENGINE MOUNT ........................................................................ 60-9
MAINTENANCE STANDARD OF COOLING SYSTEM .................................................................. 60-10
POWER TRAIN..................................................................................................................................... 60-12
MAINTENANCE STANDARD OF SWING CIRCLE ........................................................................ 60-12
MAINTENANCE STANDARD OF SWING MACHINERY................................................................ 60-13
MAINTENANCE STANDARD OF FINAL DRIVE ............................................................................ 60-15
MAINTENANCE STANDARD OF SPROCKET .............................................................................. 60-17
MAINTENANCE STANDARD OF SPROCKET TOOTH PROFILE FULL-SCALE DRAWING......... 60-18
UNDERCARRIAGE AND FRAME......................................................................................................... 60-20
MAINTENANCE STANDARD OF TRACK FRAME AND IDLER CUSHION.................................... 60-20
MAINTENANCE STANDARD OF IDLER ....................................................................................... 60-22
MAINTENANCE STANDARD OF TRACK ROLLER....................................................................... 60-24
MAINTENANCE STANDARD OF CARRIER ROLLER ................................................................... 60-26
MAINTENANCE STANDARD OF TRACK SHOE ........................................................................... 60-27
MAINTENANCE STANDARD OF TRIPLE SHOE........................................................................... 60-30
MAINTENANCE STANDARD OF ROAD LINER ............................................................................ 60-31
MAINTENANCE STANDARD OF FLAT SHOE............................................................................... 60-32
HYDRAULIC SYSTEM.......................................................................................................................... 60-33
MAINTENANCE STANDARD OF HYDRAULIC TANK ................................................................... 60-33
MAINTENANCE STANDARD OF MAIN PUMP.............................................................................. 60-34
MAINTENANCE STANDARD OF LS-EPC VALVE ......................................................................... 60-35
INDEX 00 INDEX AND FOREWORD
00-16 PC238USLC-11
MAINTENANCE STANDARD OF PC-EPC VALVE......................................................................... 60-36
MAINTENANCE STANDARD OF SWING MOTOR........................................................................ 60-37
MAINTENANCE STANDARD OF TRAVEL MOTOR ...................................................................... 60-40
MAINTENANCE STANDARD OF CONTROL VALVE..................................................................... 60-43
MAINTENANCE STANDARD OF WORK EQUIPMENT AND SWING PPC VALVE ....................... 60-53
MAINTENANCE STANDARD OF TRAVEL PPC VALVE ................................................................ 60-56
MAINTENANCE STANDARD OF 1ST-LINE ATTACHMENT PPC VALVE (WITH EPC VALVE)...... 60-59
MAINTENANCE STANDARD OF 2ND-LINE ATTACHMENT PPC VALVE ..................................... 60-62
MAINTENANCE STANDARD OF SOLENOID VALVE.................................................................... 60-64
MAINTENANCE STANDARD OF ATTACHMENT CIRCUIT SELECTOR VALVE (FOR HIGH PRES-
SURE) ........................................................................................................................................ 60-65
MAINTENANCE STANDARD OF ATTACHMENT CIRCUIT SELECTOR VALVE (FOR LOW PRES-
SURE) ........................................................................................................................................ 60-66
MAINTENANCE STANDARD OF CENTER SWIVEL JOINT .......................................................... 60-67
WORK EQUIPMENT............................................................................................................................. 60-68
MAINTENANCE STANDARD OF WORK EQUIPMENT LINKAGE................................................. 60-68
MAINTENANCE STANDARD OF BOOM CYLINDER (LARGE DIAMETER PISTON).................... 60-77
MAINTENANCE STANDARD OF ARM CYLINDER ....................................................................... 60-78
MAINTENANCE STANDARD OF BUCKET CYLINDER................................................................. 60-79
80 APPENDIX................................................................................................................................................ 80-1
CONTENTS ............................................................................................................................................ 80-2
ABBREVIATION LIST ............................................................................................................................. 80-4
AIR CONDITIONER SYSTEM .............................................................................................................. 80-10
PRECAUTIONS FOR REFRIGERANT .......................................................................................... 80-10
AIR CONDITIONER COMPONENT ................................................................................................80-11
SPECIFICATIONS OF AIR CONDITIONER ................................................................................... 80-13
CONFIGURATION AND FUNCTION OF REFRIGERATION CYCLE ............................................. 80-14
OUTLINE OF REFRIGERATION CYCLE ....................................................................................... 80-15
COMPONENT PARTS OF AIR CONDITIONER SYSTEM .................................................................... 80-17
AIR CONDITIONER UNIT.............................................................................................................. 80-17
COMPONENT PARTS OF AIR CONDITIONER UNIT.................................................................... 80-20
AIR CONDITIONER CONTROLLER.............................................................................................. 80-23
COMPRESSOR ............................................................................................................................. 80-24
CONDENSER ................................................................................................................................ 80-25
SENSORS FOR AIR CONDITIONER SYSTEM............................................................................. 80-27
EXPLANATION OF PROCEDURE FOR TESTING AND TROUBLESHOOTING OF AIR CONDITIONER......
.......................................................................................................................................................... 80-29
CIRCUIT DIAGRAM AND ARRANGEMENT OF CONNECTOR PINS FOR AIR CONDITIONER ......... 80-31
AIR CONDITIONER SYSTEM DIAGRAM ............................................................................................. 80-33
INPUT AND OUTPUT SIGNALS OF AIR CONDITIONER CONTROLLER .................................... 80-34
INSTALLATION LOCATIONS OF AIR CONDITIONER PARTS AND ARRANGEMENT OF CONNECTORS ..
.......................................................................................................................................................... 80-36
TESTING AIR LEAKAGE (DUCT)......................................................................................................... 80-45
METHOD FOR TESTING AIR LEAKAGE (DUCT) ......................................................................... 80-45
TESTING AIR CONDITIONER USING SELF-DIAGNOSIS FUNCTION................................................ 80-47
HOW TO OPEN THE ELECTRICAL SYSTEM ABNORMALITY RECORD SCREEN IN SERVICE MODE
OF THE MACHINE MONITOR .......................................................................................................... 80-48
TEST VENT (MODE) CHANGEOVER .................................................................................................. 80-49
METHOD FOR TESTING VENT (MODE) CHANGEOVER ............................................................ 80-49
TESTING FRESH/RECIRC AIR CHANGEOVER.................................................................................. 80-50
METHOD FOR TESTING FRESH/RECIRC AIR CHANGEOVER .................................................. 80-50
TEST SUNLIGHT SENSOR.................................................................................................................. 80-51
METHOD FOR TESTING SUNLIGHT SENSOR............................................................................ 80-51
TEST (DUAL) PRESSURE SWITCH FOR REFRIGERANT.................................................................. 80-52
METHOD FOR TESTING (DUAL) PRESSURE SWITCH FOR REFRIGERANT............................ 80-52
TEST RELAYS...................................................................................................................................... 80-54
METHOD FOR TESTING RELAYS ................................................................................................ 80-54
AIR CONDITIONER TROUBLESHOOTING CHART 1 ......................................................................... 80-55
00 INDEX AND FOREWORD INDEX
PC238USLC-11 00-17
AIR CONDITIONER TROUBLESHOOTING CHART 2 ......................................................................... 80-56
INFORMATION DESCRIBED IN TROUBLESHOOTING TABLE........................................................... 80-59
FAILURE CODE [879AKA].................................................................................................................... 80-61
FAILURE CODE [879AKB].................................................................................................................... 80-62
FAILURE CODE [879BKA].................................................................................................................... 80-63
FAILURE CODE [879BKB].................................................................................................................... 80-65
FAILURE CODE [879CKA].................................................................................................................... 80-67
FAILURE CODE [879CKB].................................................................................................................... 80-68
FAILURE CODE [879DKZ].................................................................................................................... 80-69
FAILURE CODE [879EMC] ................................................................................................................... 80-71
FAILURE CODE [879FMC] ................................................................................................................... 80-72
FAILURE CODE [879GKX] ................................................................................................................... 80-73
A-1 TROUBLESHOOTING FOR POWER SUPPLY SYSTEM (AIR CONDITIONER DOES NOT OPERATE).
.......................................................................................................................................................... 80-75
A-2 TROUBLESHOOTING FOR COMPRESSOR AND REFRIGERANT SYSTEM (AIR IS NOT COOLED)...
.......................................................................................................................................................... 80-77
A-3 TROUBLESHOOTING FOR BLOWER MOTOR SYSTEM (NO AIR COMES OUT OR AIR FLOW IS
ABNORMAL) ..................................................................................................................................... 80-80
A-4 TROUBLESHOOTING FOR FRESH/RECIRC AIR CHANGEOVER............................................... 80-82
TROUBLESHOOTING USING GAUGE PRESSURE............................................................................ 80-84
CONNECTION OF SERVICE TOOL ..................................................................................................... 80-86
METHOD FOR CONNECTING SERVICE TOOL ........................................................................... 80-86
PRECAUTIONS FOR DISCONNECTING AND CONNECTING HOSES AND TUBES IN AIR CONDITION-
ER PIPINGS...................................................................................................................................... 80-88
HANDLE COMPRESSOR OIL .............................................................................................................. 80-90
METHOD FOR REPLACING DESICCANT ........................................................................................... 80-92
90 CIRCUIT DIAGRAMS ............................................................................................................................... 90-1
CONTENTS ............................................................................................................................................ 90-2
ABBREVIATION LIST ............................................................................................................................. 90-3
HYDRAULIC CIRCUIT DIAGRAM .......................................................................................................... 90-9
SYMBOLS USED IN HYDRAULIC CIRCUIT DIAGRAM .................................................................. 90-9
HYDRAULIC CIRCUIT DIAGRAM (1/2) ......................................................................................... 90-13
HYDRAULIC CIRCUIT DIAGRAM (2/2) ......................................................................................... 90-15
ELECTRICAL CIRCUIT DIAGRAM ....................................................................................................... 90-17
SYMBOLS USED IN ELECTRICAL CIRCUIT DIAGRAM............................................................... 90-17
ELECTRICAL CIRCUIT DIAGRAM (1/9)........................................................................................ 90-21
ELECTRICAL CIRCUIT DIAGRAM (2/9)........................................................................................ 90-23
ELECTRICAL CIRCUIT DIAGRAM (3/9)........................................................................................ 90-25
ELECTRICAL CIRCUIT DIAGRAM (4/9)........................................................................................ 90-27
ELECTRICAL CIRCUIT DIAGRAM (5/9)........................................................................................ 90-29
ELECTRICAL CIRCUIT DIAGRAM (6/9)........................................................................................ 90-31
ELECTRICAL CIRCUIT DIAGRAM (7/9)........................................................................................ 90-33
ELECTRICAL CIRCUIT DIAGRAM (8/9)........................................................................................ 90-35
ELECTRICAL CIRCUIT DIAGRAM (9/9)........................................................................................ 90-37
INDEX..................................................................................................................................................................1
INDEX 00 INDEX AND FOREWORD
00-18 PC238USLC-11
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