Komatsu PC138USLC-11 Install guide

HYDRAULIC
EXCAVATOR
SEN06589-03
PC138USLC-11
SERIAL NUMBERS
50001
and up

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00 INDEX AND FOREWORD
PC138USLC-11 00-1
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INDEX
00 INDEX AND FOREWORD ........................................................................................................................ 00-1
ABBREVIATION LIST ........................................................................................................................... 00-18
FOREWORD, SAFETY, BASIC INFORMATION ................................................................................... 00-24
HOW TO READ THE SHOP MANUAL........................................................................................... 00-24
SAFETY NOTICE FOR OPERATION............................................................................................. 00-26
PRECAUTIONS TO PREVENT FIRE............................................................................................. 00-34
ACTIONS IF FIRE OCCURS ......................................................................................................... 00-36
PRECAUTIONS FOR DISPOSING OF WASTE MATERIALS ........................................................ 00-37
ACTIONS TAKEN TO MEET EXHAUST GAS REGULATIONS...................................................... 00-38
PRECAUTIONS FOR DEF............................................................................................................. 00-39
STORE AdBlue/DEF ...................................................................................................................... 00-40
PRECAUTIONS FOR HANDLING HYDRAULIC EQUIPMENT ...................................................... 00-41
PRECAUTIONS FOR DISCONNECTION AND CONNECTION OF PIPINGS................................ 00-44
PRECAUTIONS FOR HANDLING ELECTRICAL EQUIPMENT..................................................... 00-50
PRECAUTIONS FOR HANDLING FUEL SYSTEM EQUIPMENT .................................................. 00-52
PRECAUTIONS FOR HANDLING INTAKE SYSTEM EQUIPMENT .............................................. 00-53
PRACTICAL USE OF KOMTRAX .................................................................................................. 00-54
DISCONNECT AND CONNECT PUSH-PULL TYPE COUPLER ................................................... 00-55
PRECAUTIONS FOR DISCONNECTION AND CONNECTION OF CONNECTORS ..................... 00-59
METHOD FOR DISCONNECTING AND CONNECTING DEUTSCH CONNECTOR ..................... 00-63
METHOD FOR DISCONNECTING AND CONNECTING SLIDE LOCK TYPE CONNECTOR ....... 00-64
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH LOCK TO PULL ... 00-66
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH LOCK TO PUSH .. 00-67
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH HOUSING TO ROTATE .
................................................................................................................................................... 00-69
HOW TO READ ELECTRICAL WIRE CODE ................................................................................. 00-70
EXPLANATION OF TERMS FOR MAINTENANCE STANDARD.................................................... 00-74
STANDARD TIGHTENING TORQUE TABLE................................................................................. 00-77
CONVERSION TABLE ................................................................................................................... 00-84
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 ............................................................................................................................ 01-16
TABLE OF FUEL, COOLANT, AND LUBRICANTS ........................................................................ 01-18
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 ................................................................................................... 10-13
FUNCTION OF UREA SCR SYSTEM............................................................................................ 10-14
COMPONENT PARTS OF UREA SCR SYSTEM........................................................................... 10-31
BOOT-UP SYSTEM .............................................................................................................................. 10-40
LAYOUT DRAWING OF BOOT-UP SYSTEM................................................................................. 10-40
SYSTEM OPERATING LAMP SYSTEM ........................................................................................ 10-41
BATTERY DISCONNECT SWITCH ............................................................................................... 10-42
ENGINE SYSTEM ................................................................................................................................ 10-43
LAYOUT DRAWING OF ENGINE SYSTEM................................................................................... 10-43
ENGINE CONTROL SYSTEM ....................................................................................................... 10-45
AUTO-DECELERATION SYSTEM ................................................................................................. 10-48
ENGINE AUTOMATIC WARM-UP SYSTEM .................................................................................. 10-50
OVERHEAT PREVENTION SYSTEM ............................................................................................ 10-52
INDEX 00 INDEX AND FOREWORD
00-2 PC138USLC-11
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TURBOCHARGER PROTECTION SYSTEM................................................................................. 10-54
AUTOMATIC IDLE STOP SYSTEM ............................................................................................... 10-55
COMPONENT PARTS OF ENGINE SYSTEM ............................................................................... 10-58
COOLING SYSTEM.............................................................................................................................. 10-77
LAYOUT DRAWING OF COOLING SYSTEM ................................................................................ 10-77
CONTROL SYSTEM............................................................................................................................. 10-79
LAYOUT DRAWING OF CONTROL SYSTEM ............................................................................... 10-79
MACHINE MONITOR SYSTEM ..................................................................................................... 10-81
KomVision SYSTEM ...................................................................................................................... 10-83
KOMTRAX SYSTEM...................................................................................................................... 10-87
COMPONENT PARTS OF CONTROL SYSTEM............................................................................ 10-88
HYDRAULIC SYSTEM.........................................................................................................................10-126
LAYOUT DRAWING OF HYDRAULIC SYSTEM ...........................................................................10-126
CLSS ............................................................................................................................................10-128
ENGINE AND PUMP COMBINED CONTROL SYSTEM...............................................................10-131
COMPONENT PARTS OF HYDRAULIC SYSTEM .......................................................................10-136
WORK EQUIPMENT SYSTEM ............................................................................................................10-224
LAYOUT DRAWING OF WORK EQUIPMENT SYSTEM ..............................................................10-224
STRUCTURE OF VALVE CONTROL............................................................................................10-227
PPC LOCK SYSTEM ....................................................................................................................10-228
WORK EQUIPMENT AND TRAVEL AUTOMATIC LOCK SYSTEM ..............................................10-229
OIL FLOW ADJUSTER SYSTEM FOR ATTACHMENT.................................................................10-231
COMPONENT PARTS OF WORK EQUIPMENT SYSTEM...........................................................10-233
SWING SYSTEM .................................................................................................................................10-259
LAYOUT DRAWING OF SWING SYSTEM ...................................................................................10-259
SWING CONTROL SYSTEM DIAGRAM ......................................................................................10-261
COMPONENT PARTS OF SWING SYSTEM................................................................................10-264
TRAVEL SYSTEM................................................................................................................................10-277
LAYOUT DRAWING OF TRAVEL SYSTEM ..................................................................................10-277
TRAVEL CONTROL SYSTEM DIAGRAM .....................................................................................10-279
COMPONENT PARTS OF TRAVEL SYSTEM ..............................................................................10-283
UNDERCARRIAGE AND FRAME........................................................................................................10-299
LAYOUT DRAWING OF UNDERCARRIAGE................................................................................10-299
IDLER CUSHION..........................................................................................................................10-300
WORK EQUIPMENT............................................................................................................................10-301
STRUCTURE OF WORK EQUIPMENT ........................................................................................10-301
FUNCTION OF WORK EQUIPMENT ...........................................................................................10-302
WORK EQUIPMENT CLEARANCE ADJUSTMENT SHIM............................................................10-303
BUCKET CLEARANCE ADJUSTMENT SHIM ..............................................................................10-304
CAB AND ITS ATTACHMENTS ...........................................................................................................10-305
ROPS CAB ...................................................................................................................................10-305
CAB MOUNT ................................................................................................................................10-306
TAKE WIRING HARNESS OUT OF CAB ......................................................................................10-308
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:PC138USLC-11 ............................................................ 20-9
STANDARD VALUE TABLE FOR MACHINE......................................................................................... 20-13
STANDARD VALUE TABLE FOR MACHINE:PC138USLC-11 ....................................................... 20-13
MACHINE POSTURE AND PROCEDURE FOR MEASURING PERFORMANCE ......................... 20-26
30 TESTING AND ADJUSTING..................................................................................................................... 30-1
CONTENTS ............................................................................................................................................ 30-2
ABBREVIATION LIST ............................................................................................................................. 30-5
RELATED INFORMATION ON TESTING AND ADJUSTING .................................................................30-11
TOOLS FOR TESTING AND ADJUSTING......................................................................................30-11
SKETCH OF TOOLS FOR TESTING AND ADJUSTING ............................................................... 30-18
ENGINE AND COOLING SYSTEM....................................................................................................... 30-20
00 INDEX AND FOREWORD INDEX
PC138USLC-11 00-3
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TEST ENGINE SPEED .................................................................................................................. 30-20
TEST EXHAUST GAS COLOR...................................................................................................... 30-23
TEST THE CLEARANCE OF THE EXHAUST THROTTLE VALVE................................................ 30-25
TEST AND ADJUST VALVE CLEARANCE .................................................................................... 30-28
TEST COMPRESSION PRESSURE.............................................................................................. 30-30
TEST BLOWBY PRESSURE ......................................................................................................... 30-33
TEST ENGINE OIL PRESSURE .................................................................................................... 30-35
TEST FUEL PRESSURE ............................................................................................................... 30-37
TEST FUEL RETURN RATE AND LEAKAGE................................................................................ 30-39
BLEED AIR FROM FUEL SYSTEM ............................................................................................... 30-43
TEST FUEL CIRCUIT FOR LEAKAGE .......................................................................................... 30-45
HANDLE CYLINDER CUT-OUT MODE OPERATION.................................................................... 30-47
HANDLE NO-INJECTION CRANKING OPERATION ..................................................................... 30-48
TEST AND ADJUST AIR CONDITIONER COMPRESSOR BELT TENSION ................................. 30-49
TEST ALTERNATOR BELT............................................................................................................ 30-51
TEST AUTOMATIC TENSIONER .................................................................................................. 30-52
TEST COOLING FAN SPEED ...................................................................................................... 30-55
WRITE INJECTOR COMPENSATION VALUE TO ENGINE CONTROLLER.................................. 30-56
TEST SCR RELATED FUNCTIONS............................................................................................... 30-62
CLEAN AdBlue/DEF TANK ............................................................................................................ 30-92
BLEED AIR FROM COOLANT CIRCUIT OF AdBlue/DEF TANK ................................................... 30-97
POWER TRAIN..................................................................................................................................... 30-99
TEST SWING CIRCLE BEARING CLEARANCE ........................................................................... 30-99
UNDERCARRIAGE AND FRAME........................................................................................................30-100
TEST AND ADJUST TRACK TENSION........................................................................................30-100
HYDRAULIC SYSTEM.........................................................................................................................30-102
RELEASE REMAINING PRESSURE FROM HYDRAULIC SYSTEM............................................30-102
TEST AND ADJUST OIL PRESSURE IN WORK EQUIPMENT, SWING, TRAVEL, AND BLADE CIR-
CUITS .......................................................................................................................................30-105
TEST OIL PRESSURE OF CONTROL CIRCUIT ..........................................................................30-114
TEST AND ADJUST OIL PRESSURE IN PUMP PC CONTROL CIRCUIT ...................................30-116
TEST AND ADJUST OIL PRESSURE IN PUMP LS CONTROL CIRCUIT....................................30-120
TEST OUTLET PRESSURE OF SOLENOID VALVE ....................................................................30-126
TEST PPC VALVE OUTLET PRESSURE .....................................................................................30-131
ADJUST WORK EQUIPMENT AND SWING PPC VALVES ..........................................................30-133
TEST AND ADJUST TRAVEL DEVIATION ...................................................................................30-134
TEST THE PARTS CAUSING HYDRAULIC DRIFT IN WORK EQUIPMENT................................30-137
TEST OIL LEAKAGE ....................................................................................................................30-139
BLEED AIR FROM HYDRAULIC CIRCUIT ...................................................................................30-143
CAB AND ITS ATTACHMENTS ...........................................................................................................30-147
TEST CAB TIPPING STOPPER ...................................................................................................30-147
METHOD FOR ADJUSTING MIRRORS .......................................................................................30-148
ELECTRICAL SYSTEM .......................................................................................................................30-150
SET AND OPERATE MACHINE MONITOR..................................................................................30-150
METHOD FOR STARTING UP KOMTRAX TERMINAL ................................................................30-223
ADJUST REARVIEW CAMERA ANGLE .......................................................................................30-228
ADJUST KomVision CAMERA ANGLE .........................................................................................30-231
ADJUST KomVision RELATED ITEMS .........................................................................................30-233
HANDLE VOLTAGE CIRCUIT OF ENGINE CONTROLLER .........................................................30-249
HANDLE BATTERY DISCONNECT SWITCH ...............................................................................30-250
TEST DIODES ..............................................................................................................................30-251
Pm CLINIC...........................................................................................................................................30-252
Pm CLINIC SERVICE ...................................................................................................................30-252
40 TROUBLESHOOTING .............................................................................................................................. 40-1
CONTENTS ............................................................................................................................................ 40-2
ABBREVIATION LIST ........................................................................................................................... 40-12
RELATED INFORMATION ON TROUBLESHOOTING ......................................................................... 40-18
GENERAL TROUBLESHOOTING POINTS ................................................................................... 40-18
INDEX 00 INDEX AND FOREWORD
00-4 PC138USLC-11
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TROUBLESHOOTING POINTS FOR UREA SCR SYSTEM.......................................................... 40-19
SEQUENCE OF EVENTS IN TROUBLESHOOTING..................................................................... 40-31
CHECKS BEFORE TROUBLESHOOTING.................................................................................... 40-33
INSPECTION PROCEDURE BEFORE TROUBLESHOOTING ..................................................... 40-35
TESTING IN ACCORDANCE WITH TESTING PROCEDURE....................................................... 40-37
PREPARATION FOR TROUBLESHOOTING OF ELECTRICAL SYSTEM..................................... 40-57
PROCEDURE FOR TESTING AND TROUBLESHOOTING .......................................................... 40-64
SYMPTOMS OF FAILURE AND TROUBLESHOOTING NUMBERS ............................................. 40-67
INFORMATION DESCRIBED IN TROUBLESHOOTING TABLE.................................................... 40-72
TROUBLESHOOTING METHOD FOR OPEN CIRCUIT IN WIRING HARNESS OF PRESSURE SEN-
SOR SYSTEM............................................................................................................................ 40-74
CONNECTOR LIST AND LAYOUT ................................................................................................ 40-77
CONNECTOR CONTACT IDENTIFICATION ................................................................................. 40-90
FUSE LOCATION TABLE .............................................................................................................40-130
PRECAUTIONS FOR REPLACING KDOC ...................................................................................40-132
FAILURE CODES TABLE .............................................................................................................40-133
TROUBLESHOOTING BY FAILURE CODE (DISPLAY OF CODE) .....................................................40-148
FAILURE CODE [879AKA]............................................................................................................40-148
FAILURE CODE [879AKB]............................................................................................................40-149
FAILURE CODE [879BKA]............................................................................................................40-150
FAILURE CODE [879BKB]............................................................................................................40-152
FAILURE CODE [879CKA]............................................................................................................40-154
FAILURE CODE [879CKB]............................................................................................................40-155
FAILURE CODE [879DKZ]............................................................................................................40-156
FAILURE CODE [879EMC] ...........................................................................................................40-158
FAILURE CODE [879FMC] ...........................................................................................................40-159
FAILURE CODE [879GKX] ...........................................................................................................40-160
FAILURE CODE [989L00].............................................................................................................40-162
FAILURE CODE [989M00] ............................................................................................................40-163
FAILURE CODE [989N00] ............................................................................................................40-164
FAILURE CODE [A1U0N3] ...........................................................................................................40-165
FAILURE CODE [A1U0N4] ...........................................................................................................40-167
FAILURE CODE [A900FR]............................................................................................................40-169
FAILURE CODE [A900N6] ............................................................................................................40-170
FAILURE CODE [A900NY]............................................................................................................40-171
FAILURE CODE [AA10NX] ...........................................................................................................40-172
FAILURE CODE [AB00KE] ...........................................................................................................40-174
FAILURE CODE [AQ10MB] ..........................................................................................................40-176
FAILURE CODE [AQ10N3] ...........................................................................................................40-178
FAILURE CODE [AS00R2]............................................................................................................40-179
FAILURE CODE [AS00R3]............................................................................................................40-180
FAILURE CODE [AS00R4]............................................................................................................40-181
FAILURE CODE [AS00R5]............................................................................................................40-182
FAILURE CODE [AS00R6]............................................................................................................40-183
FAILURE CODE [AS00ZK]............................................................................................................40-184
FAILURE CODE [AS10KM]...........................................................................................................40-185
FAILURE CODE [AS10NR] ...........................................................................................................40-186
FAILURE CODE [AS10NT] ...........................................................................................................40-187
FAILURE CODE [AU10QA]...........................................................................................................40-188
FAILURE CODE [B@BAZG] .........................................................................................................40-189
FAILURE CODE [B@BAZK]..........................................................................................................40-190
FAILURE CODE [B@BCNS] .........................................................................................................40-192
FAILURE CODE [B@HANS] .........................................................................................................40-193
FAILURE CODE [CA115] ..............................................................................................................40-195
FAILURE CODE [CA122]..............................................................................................................40-196
FAILURE CODE [CA123]..............................................................................................................40-198
FAILURE CODE [CA131]..............................................................................................................40-200
FAILURE CODE [CA132]..............................................................................................................40-202
00 INDEX AND FOREWORD INDEX
PC138USLC-11 00-5
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FAILURE CODE [CA144]..............................................................................................................40-204
FAILURE CODE [CA145]..............................................................................................................40-206
FAILURE CODE [CA153]..............................................................................................................40-208
FAILURE CODE [CA154]..............................................................................................................40-211
FAILURE CODE [CA187]..............................................................................................................40-214
FAILURE CODE [CA221]..............................................................................................................40-216
FAILURE CODE [CA222]..............................................................................................................40-218
FAILURE CODE [CA227]..............................................................................................................40-220
FAILURE CODE [CA234]..............................................................................................................40-221
FAILURE CODE [CA238]..............................................................................................................40-222
FAILURE CODE [CA239]..............................................................................................................40-224
FAILURE CODE [CA249]..............................................................................................................40-226
FAILURE CODE [CA256]..............................................................................................................40-228
FAILURE CODE [CA271]..............................................................................................................40-230
FAILURE CODE [CA272]..............................................................................................................40-232
FAILURE CODE [CA322]..............................................................................................................40-234
FAILURE CODE [CA324]..............................................................................................................40-236
FAILURE CODE [CA331]..............................................................................................................40-238
FAILURE CODE [CA332]..............................................................................................................40-240
FAILURE CODE [CA343]..............................................................................................................40-242
FAILURE CODE [CA351]..............................................................................................................40-243
FAILURE CODE [CA352]..............................................................................................................40-244
FAILURE CODE [CA356]..............................................................................................................40-247
FAILURE CODE [CA357]..............................................................................................................40-249
FAILURE CODE [CA386]..............................................................................................................40-251
FAILURE CODE [CA435]..............................................................................................................40-252
FAILURE CODE [CA441]..............................................................................................................40-254
FAILURE CODE [CA442]..............................................................................................................40-256
FAILURE CODE [CA449]..............................................................................................................40-257
FAILURE CODE [CA451]..............................................................................................................40-258
FAILURE CODE [CA452]..............................................................................................................40-260
FAILURE CODE [CA515]..............................................................................................................40-262
FAILURE CODE [CA516]..............................................................................................................40-264
FAILURE CODE [CA553]..............................................................................................................40-266
FAILURE CODE [CA555]..............................................................................................................40-267
FAILURE CODE [CA556]..............................................................................................................40-268
FAILURE CODE [CA559]..............................................................................................................40-269
FAILURE CODE [CA689]..............................................................................................................40-273
FAILURE CODE [CA691]..............................................................................................................40-275
FAILURE CODE [CA692]..............................................................................................................40-277
FAILURE CODE [CA697]..............................................................................................................40-279
FAILURE CODE [CA698]..............................................................................................................40-280
FAILURE CODE [CA731]..............................................................................................................40-281
FAILURE CODE [CA778]..............................................................................................................40-283
FAILURE CODE [CA1117] ............................................................................................................40-288
FAILURE CODE [CA1664] ............................................................................................................40-289
FAILURE CODE [CA1669] ............................................................................................................40-291
FAILURE CODE [CA1673] ............................................................................................................40-292
FAILURE CODE [CA1677] ............................................................................................................40-293
FAILURE CODE [CA1678] ............................................................................................................40-294
FAILURE CODE [CA1682] ............................................................................................................40-295
FAILURE CODE [CA1683] ............................................................................................................40-299
FAILURE CODE [CA1684] ............................................................................................................40-301
FAILURE CODE [CA1686] ............................................................................................................40-303
FAILURE CODE [CA1691] ............................................................................................................40-304
FAILURE CODE [CA1694] ............................................................................................................40-306
FAILURE CODE [CA1695] ............................................................................................................40-308
FAILURE CODE [CA1696] ............................................................................................................40-309
INDEX 00 INDEX AND FOREWORD
00-6 PC138USLC-11
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FAILURE CODE [CA1712] ............................................................................................................40-311
FAILURE CODE [CA1713] ............................................................................................................40-314
FAILURE CODE [CA1714] ............................................................................................................40-316
FAILURE CODE [CA1715] ............................................................................................................40-317
FAILURE CODE [CA1776] ............................................................................................................40-318
FAILURE CODE [CA1777] ............................................................................................................40-321
FAILURE CODE [CA1843] ............................................................................................................40-324
FAILURE CODE [CA1844] ............................................................................................................40-326
FAILURE CODE [CA1885] ............................................................................................................40-329
FAILURE CODE [CA1887] ............................................................................................................40-331
FAILURE CODE [CA1896] ............................................................................................................40-333
FAILURE CODE [CA1938] ............................................................................................................40-334
FAILURE CODE [CA1942] ............................................................................................................40-336
FAILURE CODE [CA1961] ............................................................................................................40-337
FAILURE CODE [CA2185] ............................................................................................................40-338
FAILURE CODE [CA2186] ............................................................................................................40-340
FAILURE CODE [CA2249] ............................................................................................................40-342
FAILURE CODE [CA2272] ............................................................................................................40-343
FAILURE CODE [CA2311] ............................................................................................................40-346
FAILURE CODE [CA2349] ............................................................................................................40-347
FAILURE CODE [CA2353] ............................................................................................................40-349
FAILURE CODE [CA2357] ............................................................................................................40-351
FAILURE CODE [CA2636] ............................................................................................................40-352
FAILURE CODE [CA2637] ............................................................................................................40-355
FAILURE CODE [CA2765] ............................................................................................................40-357
FAILURE CODE [CA2771] ............................................................................................................40-358
FAILURE CODE [CA2976] ............................................................................................................40-364
FAILURE CODE [CA3142] ............................................................................................................40-366
FAILURE CODE [CA3143] ............................................................................................................40-367
FAILURE CODE [CA3144] ............................................................................................................40-368
FAILURE CODE [CA3146] ............................................................................................................40-370
FAILURE CODE [CA3147] ............................................................................................................40-371
FAILURE CODE [CA3148] ............................................................................................................40-372
FAILURE CODE [CA3151] ............................................................................................................40-374
FAILURE CODE [CA3165] ............................................................................................................40-380
FAILURE CODE [CA3229] ............................................................................................................40-382
FAILURE CODE [CA3231] ............................................................................................................40-384
FAILURE CODE [CA3232] ............................................................................................................40-386
FAILURE CODE [CA3235] ............................................................................................................40-390
FAILURE CODE [CA3239] ............................................................................................................40-392
FAILURE CODE [CA3241] ............................................................................................................40-395
FAILURE CODE [CA3242] ............................................................................................................40-398
FAILURE CODE [CA3251] ............................................................................................................40-401
FAILURE CODE [CA3313] ............................................................................................................40-403
FAILURE CODE [CA3314] ............................................................................................................40-404
FAILURE CODE [CA3315] ............................................................................................................40-405
FAILURE CODE [CA3419] ............................................................................................................40-407
FAILURE CODE [CA3421] ............................................................................................................40-409
FAILURE CODE [CA3497] ............................................................................................................40-411
FAILURE CODE [CA3498] ............................................................................................................40-412
FAILURE CODE [CA3543] ............................................................................................................40-413
FAILURE CODE [CA3545] ............................................................................................................40-419
FAILURE CODE [CA3547] ............................................................................................................40-421
FAILURE CODE [CA3558] ............................................................................................................40-422
FAILURE CODE [CA3559] ............................................................................................................40-424
FAILURE CODE [CA3562] ............................................................................................................40-426
FAILURE CODE [CA3563] ............................................................................................................40-428
FAILURE CODE [CA3567] ............................................................................................................40-431
00 INDEX AND FOREWORD INDEX
PC138USLC-11 00-7
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FAILURE CODE [CA3568] ............................................................................................................40-434
FAILURE CODE [CA3571] ............................................................................................................40-439
FAILURE CODE [CA3572] ............................................................................................................40-441
FAILURE CODE [CA3574] ............................................................................................................40-443
FAILURE CODE [CA3575] ............................................................................................................40-445
FAILURE CODE [CA3577] ............................................................................................................40-447
FAILURE CODE [CA3578] ............................................................................................................40-449
FAILURE CODE [CA3582] ............................................................................................................40-451
FAILURE CODE [CA3583] ............................................................................................................40-459
FAILURE CODE [CA3596] ............................................................................................................40-461
FAILURE CODE [CA3649] ............................................................................................................40-464
FAILURE CODE [CA3681] ............................................................................................................40-466
FAILURE CODE [CA3682] ............................................................................................................40-471
FAILURE CODE [CA3713] ............................................................................................................40-476
FAILURE CODE [CA3717] ............................................................................................................40-479
FAILURE CODE [CA3718] ............................................................................................................40-480
FAILURE CODE [CA3724] ............................................................................................................40-481
FAILURE CODE [CA3725] ............................................................................................................40-482
FAILURE CODE [CA3748] ............................................................................................................40-485
FAILURE CODE [CA3755] ............................................................................................................40-488
FAILURE CODE [CA3866] ............................................................................................................40-490
FAILURE CODE [CA3867] ............................................................................................................40-493
FAILURE CODE [CA3868] ............................................................................................................40-496
FAILURE CODE [CA3899] ............................................................................................................40-500
FAILURE CODE [CA3911] ............................................................................................................40-502
FAILURE CODE [CA3912] ............................................................................................................40-506
FAIULER CODE [CA3918] ............................................................................................................40-508
FAIULER CODE [CA3921] ............................................................................................................40-510
FAILURE CODE [CA3928] ............................................................................................................40-511
FAILURE CODE [CA3932] ............................................................................................................40-512
FAILURE CODE [CA3933] ............................................................................................................40-514
FAILURE CODE [CA3934] ............................................................................................................40-516
FAILURE CODE [CA3935] ............................................................................................................40-519
FAILURE CODE [CA3936] ............................................................................................................40-521
FAILURE CODE [CA4152] ............................................................................................................40-523
FAILURE CODE [CA4155] ............................................................................................................40-527
FAILURE CODE [CA4156] ............................................................................................................40-530
FAILURE CODE [CA4157] ............................................................................................................40-533
FAILURE CODE [CA4159] ............................................................................................................40-535
FAILURE CODE [CA4164] ............................................................................................................40-536
FAILURE CODE [CA4165] ............................................................................................................40-538
FAILURE CODE [CA4166] ............................................................................................................40-541
FAILURE CODE [CA4168] ............................................................................................................40-542
FAILURE CODE [CA4169] ............................................................................................................40-545
FAILURE CODE [CA4171] ............................................................................................................40-547
FAILURE CODE [CA4249] ............................................................................................................40-550
FAILURE CODE [CA4251] ............................................................................................................40-552
FAILURE CODE [CA4261] ............................................................................................................40-554
FAILURE CODE [CA4277] ............................................................................................................40-557
FAILURE CODE [CA4281] ............................................................................................................40-560
FAILURE CODE [CA4459] ............................................................................................................40-564
FAILURE CODE [CA4461] ............................................................................................................40-567
FAILURE CODE [CA4533] ............................................................................................................40-570
FAILURE CODE [CA4534] ............................................................................................................40-571
FAILURE CODE [CA4731] ............................................................................................................40-572
FAILURE CODE [CA4732] ............................................................................................................40-573
FAILURE CODE [CA4739] ............................................................................................................40-574
FAILURE CODE [CA4768] ............................................................................................................40-575
INDEX 00 INDEX AND FOREWORD
00-8 PC138USLC-11
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FAILURE CODE [CA4769] ............................................................................................................40-577
FAILURE CODE [CA4842] ............................................................................................................40-580
FAILURE CODE [CA4952] ............................................................................................................40-583
FAILURE CODE [CA5115] ............................................................................................................40-585
FAILURE CODE [CA5179] ............................................................................................................40-588
FAILURE CODE [CA5181] ............................................................................................................40-590
FAILURE CODE [CA5271] ............................................................................................................40-592
FAILURE CODE [CA5272] ............................................................................................................40-594
FAILURE CODE [CA5273] ............................................................................................................40-596
FAILURE CODE [CA5274] ............................................................................................................40-598
FAILURE CODE [CA5275] ............................................................................................................40-599
FAILURE CODE [CA5276] ............................................................................................................40-601
FAILURE CODE [CA5277] ............................................................................................................40-603
FAILURE CODE [CA5387] ............................................................................................................40-604
FAILURE CODE [CA5388] ............................................................................................................40-606
FAILURE CODE [CA5389] ............................................................................................................40-608
FAILURE CODE [CA5391] ............................................................................................................40-610
FAILURE CODE [CA5392] ............................................................................................................40-614
FAILURE CODE [CA5393] ............................................................................................................40-615
FAILURE CODE [CA5394] ............................................................................................................40-618
FAILURE CODE [CA5395] ............................................................................................................40-621
FAILURE CODE [CA5396] ............................................................................................................40-624
FAILURE CODE [CA5631] ............................................................................................................40-625
FAILURE CODE [CA5938] ............................................................................................................40-627
FAILURE CODE [D110KB]............................................................................................................40-629
FAILURE CODE [D19JKZ] ............................................................................................................40-631
FAILURE CODE [D811MC] ...........................................................................................................40-633
FAILURE CODE [D862KA]............................................................................................................40-634
FAILURE CODE [D8ALKA] ...........................................................................................................40-635
FAILURE CODE [D8ALKB] ...........................................................................................................40-637
FAILURE CODE [D8AQKR] ..........................................................................................................40-639
FAILURE CODE [DA20MC] ..........................................................................................................40-643
FAILURE CODE [DA22KK] ...........................................................................................................40-644
FAILURE CODE [DA25KP] ...........................................................................................................40-647
FAILURE CODE [DA26KP] ...........................................................................................................40-651
FAILURE CODE [DA29KQ]...........................................................................................................40-653
FAILURE CODE [DA2LKA] ...........................................................................................................40-655
FAILURE CODE [DA2LKB] ...........................................................................................................40-657
FAILURE CODE [DA2QKR] ..........................................................................................................40-659
FAILURE CODE [DA2RKR] ..........................................................................................................40-664
FAILURE CODE [DAF0MB] ..........................................................................................................40-669
FAILURE CODE [DAF0MC] ..........................................................................................................40-670
FAILURE CODE [DAF8KB] ...........................................................................................................40-671
FAILURE CODE [DAF9KQ]...........................................................................................................40-673
FAILURE CODE [DAFGMC] .........................................................................................................40-674
FAILURE CODE [DAFLKA] ...........................................................................................................40-675
FAILURE CODE [DAFLKB] ...........................................................................................................40-677
FAILURE CODE [DAFQKR] ..........................................................................................................40-679
FAILURE CODE [DAZ9KQ]...........................................................................................................40-683
FAILURE CODE [DAZQKR] ..........................................................................................................40-684
FAILURE CODE [DB2QKR] ..........................................................................................................40-688
FAILURE CODE [DB2RKR] ..........................................................................................................40-693
FAILURE CODE [DB90MC] ..........................................................................................................40-698
FAILURE CODE [DBP0KM] ..........................................................................................................40-699
FAILURE CODE [DBP0KT] ...........................................................................................................40-700
FAILURE CODE [DBPQKR]..........................................................................................................40-701
FAILURE CODE [DDNRKA]..........................................................................................................40-706
FAILURE CODE [DDNRKY]..........................................................................................................40-709
00 INDEX AND FOREWORD INDEX
PC138USLC-11 00-9

FAILURE CODE [DDNS00]...........................................................................................................40-711
FAILURE CODE [DGH2KA] ..........................................................................................................40-713
FAILURE CODE [DGH2KB] ..........................................................................................................40-715
FAILURE CODE [DHA4KA]...........................................................................................................40-716
FAILURE CODE [DHPAMA] ..........................................................................................................40-718
FAILURE CODE [DHS3MA] ..........................................................................................................40-720
FAILURE CODE [DHS4MA] ..........................................................................................................40-722
FAILURE CODE [DHS8MA] ..........................................................................................................40-724
FAILURE CODE [DHS9MA] ..........................................................................................................40-726
FAILURE CODE [DHSAMA]..........................................................................................................40-728
FAILURE CODE [DHSBMA]..........................................................................................................40-730
FAILURE CODE [DHSCMA] .........................................................................................................40-732
FAILURE CODE [DHSDMA] .........................................................................................................40-734
FAILURE CODE [DHSFMA]..........................................................................................................40-736
FAILURE CODE [DHSGMA] .........................................................................................................40-738
FAILURE CODE [DHSHMA] .........................................................................................................40-740
FAILURE CODE [DHSJMA] ..........................................................................................................40-742
FAILURE CODE [DHSKMA]..........................................................................................................40-744
FAILURE CODE [DHSLMA] ..........................................................................................................40-746
FAILURE CODE [DKULKA]...........................................................................................................40-748
FAILURE CODE [DKULKB]...........................................................................................................40-750
FAILURE CODE [DKULKY]...........................................................................................................40-752
FAILURE CODE [DLM5KA]...........................................................................................................40-754
FAILURE CODE [DLM5MB] ..........................................................................................................40-756
FAILURE CODE [DR10KA] ...........................................................................................................40-758
FAILURE CODE [DR21KX] ...........................................................................................................40-760
FAILURE CODE [DUMBKA]..........................................................................................................40-762
FAILURE CODE [DUMBKB]..........................................................................................................40-764
FAILURE CODE [DV20KB] ...........................................................................................................40-766
FAILURE CODE [DW43KA] ..........................................................................................................40-768
FAILURE CODE [DW43KB] ..........................................................................................................40-770
FAILURE CODE [DW43KY] ..........................................................................................................40-772
FAILURE CODE [DW45KA] ..........................................................................................................40-773
FAILURE CODE [DW45KB] ..........................................................................................................40-776
FAILURE CODE [DW45KY] ..........................................................................................................40-779
FAILURE CODE [DW4CKY]..........................................................................................................40-781
FAILURE CODE [DW91KA] ..........................................................................................................40-783
FAILURE CODE [DW91KB] ..........................................................................................................40-785
FAILURE CODE [DW91KY] ..........................................................................................................40-787
FAILURE CODE [DWA2KA] ..........................................................................................................40-789
FAILURE CODE [DWA2KB] ..........................................................................................................40-791
FAILURE CODE [DWA2KY] ..........................................................................................................40-793
FAILURE CODE [DWJ0KA] ..........................................................................................................40-795
FAILURE CODE [DWJ0KB] ..........................................................................................................40-797
FAILURE CODE [DWJ0KY] ..........................................................................................................40-799
FAILURE CODE [DWK2KA]..........................................................................................................40-801
FAILURE CODE [DWK2KB]..........................................................................................................40-803
FAILURE CODE [DWK2KY]..........................................................................................................40-805
FAILURE CODE [DWN5KA]..........................................................................................................40-807
FAILURE CODE [DWN5KB]..........................................................................................................40-809
FAILURE CODE [DWN5KY]..........................................................................................................40-811
FAILURE CODE [DWNSKA] .........................................................................................................40-813
FAILURE CODE [DWNSKB] .........................................................................................................40-815
FAILURE CODE [DWNSKY] .........................................................................................................40-817
FAILURE CODE [DXA8KA]...........................................................................................................40-818
FAILURE CODE [DXA8KB]...........................................................................................................40-820
FAILURE CODE [DXE4KA]...........................................................................................................40-822
FAILURE CODE [DXE4KB]...........................................................................................................40-824
INDEX 00 INDEX AND FOREWORD
00-10 PC138USLC-11

FAILURE CODE [DXE4KY]...........................................................................................................40-826
FAILURE CODE [DY20KA] ...........................................................................................................40-828
FAILURE CODE [DY20MA]...........................................................................................................40-830
FAILURE CODE [DY2CKB]...........................................................................................................40-832
FAILURE CODE [DY2DKB]...........................................................................................................40-834
FAILURE CODE [DY2EKB]...........................................................................................................40-836
TROUBLESHOOTING OF ELECTRICAL SYSTEM (E-MODE) ...........................................................40-838
E-1 ENGINE DOES NOT START (ENGINE DOES NOT CRANK) ................................................40-838
E-2 MANUAL PREHEATING SYSTEM DOES NOT WORK..........................................................40-844
E-3 WHILE PREHEATING IS WORKING, PREHEATING MONITOR DOES NOT LIGHT UP.......40-847
E-4 WHEN STARTING SWITCH IS TURNED TO ON POSITION, MACHINE MONITOR DISPLAYS
NOTHING..................................................................................................................................40-849
E-5 ENGINE COOLANT TEMPERATURE MONITOR LIGHTS UP IN WHITE WHILE ENGINE IS RUN-
NING .........................................................................................................................................40-852
E-6 HYDRAULIC OIL TEMPERATURE MONITOR LIGHTS UP IN WHITE WHILE ENGINE IS RUN-
NING .........................................................................................................................................40-853
E-7 AIR CLEANER CLOGGING MONITOR LIGHTS UP IN YELLOW WHILE ENGINE IS RUNNING.....
..................................................................................................................................................40-854
E-8 CHARGE LEVEL MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUNNING .................40-855
E-9 FUEL LEVEL MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUNNING........................40-856
E-10 ENGINE COOLANT TEMPERATURE MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUN-
NING .........................................................................................................................................40-857
E-11 ENGINE OIL PRESSURE MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUNNING ..40-858
E-12 HYDRAULIC OIL TEMPERATURE MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUN-
NING .........................................................................................................................................40-859
E-13 FUEL GAUGE DISPLAY DOES NOT MOVE FROM MINIMUM OR MAXIMUM ...................40-860
E-14 DISPLAY OF FUEL GAUGE DIFFERS FROM ACTUAL FUEL LEVEL.................................40-862
E-15 ENGINE COOLANT TEMPERATURE GAUGE DISPLAY DOES NOT MOVE FROM MINIMUM
OR MAXIMUM...........................................................................................................................40-863
E-16 DISPLAY OF ENGINE COOLANT TEMPERATURE GAUGE DIFFERS FROM ACTUAL COOL-
ANT TEMPERATURE................................................................................................................40-864
E-17 HYDRAULIC OIL TEMPERATURE GAUGE DISPLAY DOES NOT MOVE FROM MINIMUM OR
MAXIMUM .................................................................................................................................40-865
E-18 DISPLAY OF HYDRAULIC OIL TEMPERATURE GAUGE DIFFERS FROM ACTUAL OIL TEM-
PERATURE ...............................................................................................................................40-867
E-19 SOME AREAS OF MACHINE MONITOR SCREEN ARE NOT DISPLAYED ........................40-868
E-20 FUNCTION SWITCH DOES NOT OPERATE .......................................................................40-869
E-21 AUTOMATIC WARM-UP SYSTEM DOES NOT WORK (IN COLD WEATHER)....................40-870
E-22 WHEN AUTO-DECELERATOR SWITCH IS OPERATED, AUTO-DECELERATOR MONITOR
DOES NOT LIGHT UP OR DOES NOT GO OFF ......................................................................40-871
E-23 AUTO-DECELERATOR IS NOT OPERATED OR CANCELED WITH LEVER ......................40-872
E-24 WHEN WORKING MODE SWITCH IS OPERATED, WORKING MODE SELECTION SCREEN IS
NOT DISPLAYED ......................................................................................................................40-874
E-25 WHEN WORKING MODE IS CHANGED, SETTING OF ENGINE AND HYDRAULIC PUMP IS
NOT CHANGED........................................................................................................................40-875
E-26 WHEN TRAVEL SPEED SWITCH IS OPERATED, TRAVEL SPEED MONITOR DOES NOT
CHANGE...................................................................................................................................40-876
E-27 WHEN TRAVEL SPEED SELECTION IS CHANGED, ACTUAL TRAVEL SPEED DOES NOT
CHANGE...................................................................................................................................40-877
E-28 ALARM BUZZER CANNOT BE CANCELED ........................................................................40-878
E-29 SERVICE METER IS NOT DISPLAYED, WHILE STARTING SWITCH IS IN OFF POSITION.........
..................................................................................................................................................40-879
E-30 SERVICE MODE CANNOT BE SELECTED.........................................................................40-880
E-31 ALL OF WORK EQUIPMENTS, SWING, AND TRAVEL MECHANISM DO NOT MOVE ......40-881
E-32 ALL OF WORK EQUIPMENT, SWING, AND TRAVEL MECHANISM DO NOT LOCK..........40-884
E-33 WHEN SWING BRAKE CANCEL SWITCH IS SET TO CANCEL POSITION, MACHINE CANNOT
SWING ......................................................................................................................................40-886
00 INDEX AND FOREWORD INDEX
PC138USLC-11 00-11

E-34 WHEN SWING BRAKE CANCEL SWITCH IS SET TO NORMAL POSITION, SWING HOLDING
BRAKE DOES NOT OPERATE .................................................................................................40-888
E-35 WORK EQUIPMENT DOES NOT OPERATE WHILE LOCK LEVER AUTOMATIC RELEASE
SWITCH IS IN RELEASE POSITION ........................................................................................40-890
E-36 ALARM DOES NOT SOUND DURING TRAVEL ..................................................................40-892
E-37 ALARM DOES NOT STOP SOUNDING WHILE MACHINE IS STOPPED............................40-894
E-38 HORN DOES NOT SOUND..................................................................................................40-895
E-39 HORN DOES NOT STOP SOUNDING.................................................................................40-897
E-40 WHEN WIPER SWITCH IS OPERATED, WIPER MONITOR DOES NOT LIGHT UP OR GO OFF.
..................................................................................................................................................40-898
E-41 WHEN WIPER SWITCH IS OPERATED, WINDSHIELD WIPER DOES NOT OPERATE.....40-899
E-42 WHEN WINDOW WASHER SWITCH IS OPERATED, WINDOW WASHER DOES NOT OPER-
ATE ...........................................................................................................................................40-901
E-43 BOOM RAISE INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION ...
..................................................................................................................................................40-902
E-44 BOOM LOWER INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION .
..................................................................................................................................................40-903
E-45 ARM OUT INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION..........
..................................................................................................................................................40-904
E-46 ARM IN INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION ..40-905
E-47 BUCKET DUMP INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION
..................................................................................................................................................40-906
E-48 BUCKET CURL INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION.
..................................................................................................................................................40-907
E-49 SWING INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION...40-908
E-50 TRAVEL INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION .40-909
E-51 SERVICE INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION ..........
..................................................................................................................................................40-910
E-52 BLADE RAISE ON IS NOT DISPLAYED CORRECTLY WITH MONITORING ......................40-913
E-53 BLADE LOWER ON IS NOT DISPLAYED CORRECTLY WITH MONITORING....................40-914
E-54 KOMTRAX SYSTEM DOES NOT OPERATE NORMALLY ...................................................40-915
TROUBLESHOOTING FOR HYDRAULIC AND MECHANICAL SYSTEMS (H MODE) .......................40-916
INFORMATION MENTIONED IN TROUBLESHOOTING TABLE (H MODE).................................40-916
FAILURE MODE AND CAUSE TABLE..........................................................................................40-917
H-1 ALL WORK EQUIPMENT, SWING AND TRAVEL DO NOT WORK........................................40-925
H-2 ALL WORK EQUIPMENT, SWING AND TRAVEL LACK SPEED AND POWER ....................40-926
H-3 FINE CONTROL PERFORMANCE OR RESPONSE IS POOR..............................................40-928
H-4 UNUSUAL NOISE IS HEARD FROM AROUND HYDRAULIC PUMP ....................................40-929
H-5 ENGINE SPEED DROPS LARGELY OR ENGINE STOPS ....................................................40-930
H-6 SPEED OR POWER OF BOOM IS LOW ...............................................................................40-932
H-7 ARM SPEED OR POWER IS LOW ........................................................................................40-935
H-8 BUCKET SPEED OR POWER IS LOW..................................................................................40-938
H-9 BLADE SPEED OR POWER IS LOW ....................................................................................40-941
H-10 WORK EQUIPMENT DOES NOT MOVE IN SINGLE OPERATION .....................................40-943
H-11 HYDRAULIC DRIFT OF BOOM IS LARGE ..........................................................................40-944
H-12 HYDRAULIC DRIFT OF ARM IS LARGE .............................................................................40-945
H-13 HYDRAULIC DRIFT OF BUCKET IS LARGE.......................................................................40-946
H-14 HYDRAULIC DRIFT OF BLADE IS LARGE .........................................................................40-947
H-15 WHEN SINGLE WORK EQUIPMENT IS RELIEVED HYDRAULICALLY, OTHER WORK EQUIP-
MENT MOVES ..........................................................................................................................40-949
H-16 TIME LAG OF WORK EQUIPMENT IS LARGE ...................................................................40-950
H-17 ATTACHMENT CIRCUIT CANNOT BE CHANGED..............................................................40-951
H-18 OIL FLOW IN ATTACHMENT CIRCUIT CANNOT BE CHANGED .......................................40-952
H-19 IN COMBINED OPERATION OF WORK EQUIPMENT, EQUIPMENT HAVING HEAVIER LOAD
MOVES SLOWER .....................................................................................................................40-953
H-20 IN COMBINED OPERATION OF SWING AND TRAVEL, TRAVEL SPEED DROPS LARGELY ......
..................................................................................................................................................40-954
INDEX 00 INDEX AND FOREWORD
00-12 PC138USLC-11

H-21 IN COMBINED OPERATION OF SWING AND BOOM RAISE, BOOM RISING SPEED IS LOW ....
..................................................................................................................................................40-955
H-22 MACHINE DOES NOT TRAVEL STRAIGHT ........................................................................40-956
H-23 MACHINE IS NOT STEERED WELL OR STEERING POWER IS LOW...............................40-959
H-24 TRAVEL SPEED IS LOW .....................................................................................................40-961
H-25 ONE OF TRACKS DOES NOT RUN ....................................................................................40-963
H-26 TRAVEL SPEED DOES NOT CHANGE, OR TRAVEL SPEED IS TOO SLOW OR FAST ....40-965
H-27 UPPER STRUCTURE DOES NOT SWING BOTH TO THE RIGHT AND LEFT ...................40-966
H-28 SWINGS ONLY IN ONE DIRECTION...................................................................................40-967
H-29 SWING ACCELERATION OR SWING SPEED IS LOW IN BOTH DIRECTIONS (RIGHT AND
LEFT) ........................................................................................................................................40-968
H-30 SWING ACCELERATION PERFORMANCE IS POOR OR SWING SPEED IS SLOW IN ONLY
ONE DIRECTION ......................................................................................................................40-969
H-31 UPPER STRUCTURE OVERRUNS EXCESSIVELY WHEN IT STOPS SWINGING (BOTH
RIGHT AND LEFT)....................................................................................................................40-970
H-32 UPPER STRUCTURE OVERRUNS EXCESSIVELY WHEN IT STOPS SWINGING (ONLY ONE
DIRECTION EITHER RIGHT OR LEFT)....................................................................................40-971
H-33 SHOCK IS LARGE WHEN UPPER STRUCTURE STOPS SWINGING ...............................40-972
H-34 LARGE UNUSUAL NOISE IS HEARD WHEN UPPER STRUCTURE STOPS SWINGING..40-973
H-35 SWING DRIFT ON A SLOPE IS LARGE (WHILE SWING PARKING BRAKE IS APPLIED).40-974
H-36 SWING DRIFT ON A SLOPE IS LARGE (WHILE SWING PARKING BRAKE IS RELEASED) ........
..................................................................................................................................................40-975
H-37 FAN SPEED IS ABNORMAL (TOO HIGH OR LOW, OR STATIONARY) ..............................40-976
H-38 UNUSUAL NOISE IS HEARD FROM AROUND FAN ...........................................................40-977
TROUBLESHOOTING OF ENGINE (S-MODE) ...................................................................................40-978
INFORMATION MENTIONED IN TROUBLESHOOTING TABLE (S MODE).................................40-978
S-1 ENGINE DOES NOT CRANK WHEN STARTING SWITCH IS TURNED TO START POSITION.......
..................................................................................................................................................40-979
S-2 ENGINE CRANKS BUT NO EXHAUST GAS COMES OUT ...................................................40-980
S-3 FUEL IS BEING INJECTED BUT ENGINE DOES NOT START (MISFIRING: ENGINE CRANKS
BUT DOES NOT START) ..........................................................................................................40-981
S-4 ENGINE STARTABILITY IS POOR.........................................................................................40-982
S-5 ENGINE DOES NOT PICK UP SMOOTHLY ..........................................................................40-984
S-6 ENGINE STOPS DURING OPERATION ................................................................................40-986
S-7 ENGINE RUNS ROUGH OR IS UNSTABLE ..........................................................................40-988
S-8 ENGINE LACKS POWER.......................................................................................................40-989
S-9 EXHAUST SMOKE IS BLACK................................................................................................40-991
S-10 ENGINE OIL CONSUMPTION IS EXCESSIVE ....................................................................40-993
S-11 OIL BECOMES CONTAMINATED QUICKLY ........................................................................40-994
S-12 FUEL CONSUMPTION IS EXCESSIVE ...............................................................................40-995
S-13 OIL IS IN COOLANT (OR COOLANT SPURTS BACK OR COOLANT LEVEL GOES DOWN) .......
..................................................................................................................................................40-996
S-14 OIL PRESSURE DROPS .....................................................................................................40-997
S-15 FUEL MIXES INTO ENGINE OIL..........................................................................................40-998
S-16 WATER MIXES INTO ENGINE OIL (MILKY) ........................................................................40-999
S-17 COOLANT TEMPERATURE RISES TOO HIGH (OVERHEATING) ....................................40-1000
S-18 UNUSUAL NOISE IS HEARD.............................................................................................40-1001
S-19 VIBRATION IS EXCESSIVE ...............................................................................................40-1003
S-20 AIR CANNOT BE BLED FROM FUEL CIRCUIT.................................................................40-1004
S-21 ACTIVE REGENERATION IS EXECUTED FREQUENTLY ................................................40-1005
S-22 ACTIVE REGENERATION TAKES TIME............................................................................40-1006
S-23 WHITE SMOKE IS EXHAUSTED DURING ACTIVE REGENERATION..............................40-1007
S-24 AdBlue/DEF CONSUMPTION IS EXCESSIVE ...................................................................40-1008
S-25 THERE IS UNUSUAL SMELL (IRRITATING ODOR) ..........................................................40-1010
S-26 FOREIGN MATERIALS ENTER AdBlue/DEF (AdBlue/DEF INCREASES).........................40-1011
50 DISASSEMBLY AND ASSEMBLY............................................................................................................. 50-1
CONTENTS ............................................................................................................................................ 50-2
ABBREVIATION LIST ............................................................................................................................. 50-7
00 INDEX AND FOREWORD INDEX
PC138USLC-11 00-13

RELATED INFORMATION ON DISASSEMBLY AND ASSEMBLY ........................................................ 50-13
HOW TO READ THIS MANUAL..................................................................................................... 50-13
COATING MATERIALS LIST.......................................................................................................... 50-15
SPECIAL TOOLS LIST .................................................................................................................. 50-20
SKETCHES OF SPECIAL TOOLS................................................................................................. 50-36
ENGINE AND COOLING SYSTEM....................................................................................................... 50-39
REMOVE AND INSTALL SUPPLY PUMP ASSEMBLY .................................................................. 50-39
REMOVE AND INSTALL INJECTOR ASSEMBLY ......................................................................... 50-49
REMOVE AND INSTALL CYLINDER HEAD ASSEMBLY .............................................................. 50-65
REMOVE AND INSTALL EGR VALVE ASSEMBLY........................................................................ 50-98
REMOVE AND INSTALL EGR COOLER ASSEMBLY...................................................................50-102
REMOVE AND INSTALL STARTER ASSEMBLY..........................................................................50-107
REMOVE AND INSTALL ALTERNATOR BELT .............................................................................50-115
REMOVE AND INSTALL AUTOMATIC TENSIONER....................................................................50-118
REMOVE AND INSTALL RADIATOR ASSEMBLY ........................................................................50-119
REMOVE AND INSTALL HYDRAULIC OIL COOLER ASSEMBLY ...............................................50-124
REMOVE AND INSTALL AFTERCOOLER ASSEMBLY................................................................50-131
REMOVE AND INSTALL FAN CLUTCH ASSEMBLY....................................................................50-134
REMOVE AND INSTALL ENGINE AND MAIN PUMP ASSEMBLY ...............................................50-147
REMOVE AND INSTALL ENGINE FRONT OIL SEAL ..................................................................50-169
REMOVE AND INSTALL ENGINE REAR OIL SEAL.....................................................................50-172
REMOVE AND INSTALL FUEL COOLER ASSEMBLY .................................................................50-177
REMOVE AND INSTALL KDOC ASSEMBLY................................................................................50-179
REMOVE AND INSTALL KDOC AND SCR ASSEMBLY ...............................................................50-187
REMOVE AND INSTALL FUEL TANK ASSEMBLY .......................................................................50-202
REMOVE AND INSTALL AdBlue/DEF TANK ASSEMBLY ............................................................50-215
REMOVE AND INSTALL AdBlue/DEF TANK SENSOR FLANGE ASSEMBLY..............................50-225
REMOVE AND INSTALL AdBlue/DEF TANK SENSOR ................................................................50-234
REMOVE AND INSTALL AdBlue/DEF TANK STRAINER .............................................................50-236
REMOVE AND INSTALL SCR ASSEMBLY...................................................................................50-237
REMOVE AND INSTALL KDOC AND SCR ASSEMBLY BRACKET .............................................50-246
REMOVE AND INSTALL BELLOWS PIPE ASSEMBLY ................................................................50-254
REMOVE AND INSTALL KCCV ASSEMBLY ................................................................................50-262
REMOVE AND INSTALL EXHAUST THROTTLE VALVE..............................................................50-265
REMOVE AND INSTALL AdBlue/DEF MIXING TUBE ..................................................................50-277
REMOVE AND INSTALL AdBlue/DEF INJECTOR........................................................................50-287
REMOVE AND INSTALL AdBlue/DEF PUMP ...............................................................................50-295
REMOVE AND INSTALL AdBlue/DEF HOSE ...............................................................................50-304
REMOVE AND INSTALL AIR CLEANER ASSEMBLY...................................................................50-321
REMOVE AND INSTALL AIR CONDITIONER COMPRESSOR ASSEMBLY ................................50-327
REMOVE AND INSTALL AIR CONDITIONER CONDENSER ASSEMBLY ...................................50-331
POWER TRAIN....................................................................................................................................50-334
REMOVE AND INSTALL TRAVEL MOTOR AND FINAL DRIVE ASSEMBLY ...............................50-334
DISASSEMBLE AND ASSEMBLE TRAVEL MOTOR AND FINAL DRIVE ASSEMBLY.................50-337
REMOVE AND INSTALL SWING MOTOR AND SWING MACHINERY ASSEMBLY.....................50-383
DISASSEMBLE AND ASSEMBLE SWING MACHINERY ASSEMBLY .........................................50-388
REMOVE AND INSTALL SWING CIRCLE ASSEMBLY ................................................................50-398
UNDERCARRIAGE AND FRAME........................................................................................................50-400
SEPARATION AND CONNECTION OF TRACK ASSEMBLY........................................................50-400
REMOVE AND INSTALL SPROCKET ..........................................................................................50-406
REMOVE AND INSTALL IDLER AND IDLER CUSHION ASSEMBLY...........................................50-408
DISASSEMBLE AND ASSEMBLE IDLER ASSEMBLY .................................................................50-410
DISASSEMBLE AND ASSEMBLE OF IDLER CUSHION ASSEMBLY ..........................................50-415
DISASSEMBLE AND ASSEMBLE TRACK ROLLER ASSEMBLY ................................................50-418
REMOVE AND INSTALL REVOLVING FRAME ASSEMBLY ........................................................50-422
REMOVE AND INSTALL COUNTERWEIGHT ASSEMBLY...........................................................50-428
HYDRAULIC SYSTEM.........................................................................................................................50-439
REMOVE AND INSTALL CENTER SWIVEL JOINT ASSEMBLY ..................................................50-439
INDEX 00 INDEX AND FOREWORD
00-14 PC138USLC-11

DISASSEMBLE AND ASSEMBLE CENTER SWIVEL JOINT ASSEMBLY ...................................50-444
REMOVE AND INSTALL HYDRAULIC TANK ASSEMBLY............................................................50-447
REMOVE AND INSTALL MAIN PUMP ASSEMBLY ......................................................................50-454
REMOVE AND INSTALL CONTROL VALVE ASSEMBLY .............................................................50-463
DISASSEMBLE AND ASSEMBLE CONTROL VALVE ASSEMBLY ..............................................50-477
DISASSEMBLE AND ASSEMBLE WORK EQUIPMENT PPC VALVE ASSEMBLY ......................50-482
DISASSEMBLE AND ASSEMBLE TRAVEL PPC VALVE ASSEMBLY ..........................................50-485
WORK EQUIPMENT............................................................................................................................50-487
REMOVE AND INSTALL BLADE ASSEMBLY ..............................................................................50-487
REMOVE AND INSTALL WORK EQUIPMENT ASSEMBLY .........................................................50-491
DISASSEMBLE AND ASSEMBLE WORK EQUIPMENT CYLINDER ASSEMBLY........................50-502
CAB AND ITS ATTACHMENTS ...........................................................................................................50-512
REMOVE AND INSTALL OPERATOR'S CAB ASSEMBLY ...........................................................50-512
REMOVE AND INSTALL OPERATOR'S CAB DOOR ...................................................................50-521
REMOVE AND INSTALL OPERATOR CAB GLASS (ADHERED GLASS) ....................................50-525
REMOVE AND INSTALL FRONT WINDOW ASSEMBLY .............................................................50-538
REMOVE AND INSTALL FLOOR FRAME ASSEMBLY.................................................................50-541
REMOVE AND INSTALL AIR CONDITIONER UNIT ASSEMBLY .................................................50-557
REMOVE AND INSTALL OPERATOR'S SEAT .............................................................................50-567
REMOVE AND INSTALL SEAT BELT ...........................................................................................50-569
REMOVE AND INSTALL FRONT WIPER ASSEMBLY .................................................................50-571
ELECTRICAL SYSTEM .......................................................................................................................50-584
REMOVE AND INSTALL ENGINE CONTROLLER ASSEMBLY ...................................................50-584
REMOVE AND INSTALL PUMP CONTROLLER ASSEMBLY.......................................................50-587
REMOVE AND INSTALL KomVision CONTROLLER ASSEMBLY ................................................50-592
REMOVE AND INSTALL MACHINE MONITOR ASSEMBLY ........................................................50-595
REMOVE AND INSTALL MASS AIR FLOW AND TEMPERATURE SENSOR ..............................50-601
REMOVE AND INSTALL KCCV CRANKCASE PRESSURE SENSOR.........................................50-604
REMOVE AND INSTALL SCR TEMPERATURE SENSOR ...........................................................50-609
REMOVE AND INSTALL REARVIEW CAMERA ...........................................................................50-611
REMOVE AND INSTALL KomVision CAMERA.............................................................................50-614
REMOVE AND INSTALL KOMTRAX TERMINAL ASSEMBLY......................................................50-619
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 FOR PTO ........................................................................................ 60-10
MAINTENANCE STANDARD OF COOLING SYSTEM ...................................................................60-11
POWER TRAIN..................................................................................................................................... 60-12
MAINTENANCE STANDARD OF SWING CIRCLE ........................................................................ 60-12
MAINTENANCE STANDARD OF SWING MACHINERY................................................................ 60-13
MAINTENANCE STANDARD OF SPROCKET .............................................................................. 60-15
UNDERCARRIAGE AND FRAME......................................................................................................... 60-16
MAINTENANCE STANDARD OF TRACK FRAME AND IDLER CUSHION.................................... 60-16
MAINTENANCE STANDARD OF IDLER ....................................................................................... 60-18
MAINTENANCE STANDARD OF TRACK ROLLER....................................................................... 60-19
MAINTENANCE STANDARD OF CARRIER ROLLER ................................................................... 60-20
MAINTENANCE STANDARD OF TRACK SHOE ........................................................................... 60-21
MAINTENANCE STANDARD OF TRIPLE SHOE........................................................................... 60-24
MAINTENANCE STANDARD OF ROAD LINER ............................................................................ 60-25
HYDRAULIC SYSTEM.......................................................................................................................... 60-26
MAINTENANCE STANDARD OF HYDRAULIC TANK ................................................................... 60-26
MAINTENANCE STANDARD OF MAIN PUMP .............................................................................. 60-27
MAINTENANCE STANDARD OF PC-EPC VALVE......................................................................... 60-31
MAINTENANCE STANDARD OF SWING MOTOR........................................................................ 60-32
MAINTENANCE STANDARD OF TRAVEL MOTOR ...................................................................... 60-35
MAINTENANCE STANDARD OF CONTROL VALVE..................................................................... 60-36
00 INDEX AND FOREWORD INDEX
PC138USLC-11 00-15

MAINTENANCE STANDARD OF WORK EQUIPMENT AND SWING PPC VALVE ....................... 60-47
MAINTENANCE STANDARD OF BLADE PPC VALVE .................................................................. 60-50
MAINTENANCE STANDARD OF TRAVEL PPC VALVE ................................................................ 60-52
MAINTENANCE STANDARD OF 1ST-LINE ATTACHMENT PPC VALVE (WITH EPC VALVE)...... 60-55
MAINTENANCE STANDARD OF SOLENOID VALVE.................................................................... 60-58
MAINTENANCE STANDARD OF VARIABLE BACK PRESSURE SOLENOID VALVE................... 60-61
MAINTENANCE STANDARD OF ATTACHMENT CIRCUIT SELECTOR VALVE (FOR HIGH PRES-
SURE) ........................................................................................................................................ 60-62
MAINTENANCE STANDARD OF ATTACHMENT CIRCUIT SELECTOR VALVE (FOR LOW PRES-
SURE) ........................................................................................................................................ 60-63
MAINTENANCE STANDARD FOR ATTACHMENT CIRCUIT ACCUMULATOR (FOR LOW PRESSURE
CIRCUIT) ................................................................................................................................... 60-64
MAINTENANCE STANDARD OF CENTER SWIVEL JOINT .......................................................... 60-65
WORK EQUIPMENT............................................................................................................................. 60-66
MAINTENANCE STANDARD OF WORK EQUIPMENT LINKAGE................................................. 60-66
MAINTENANCE STANDARD OF BOOM CYLINDER .................................................................... 60-75
MAINTENANCE STANDARD OF ARM CYLINDER ....................................................................... 60-76
MAINTENANCE STANDARD OF BUCKET CYLINDER................................................................. 60-77
MAINTENANCE STANDARD OF BLADE CYLINDER ................................................................... 60-78
CAB AND ITS ATTACHMENTS ............................................................................................................ 60-79
MAINTENANCE STANDARD OF CAB MOUNT............................................................................. 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.............................................................................................. 80-24
COMPRESSOR ............................................................................................................................. 80-25
CONDENSER ................................................................................................................................ 80-26
SENSORS FOR AIR CONDITIONER SYSTEM............................................................................. 80-28
EXPLANATION OF PROCEDURE FOR TESTING AND TROUBLESHOOTING OF AIR CONDITIONER......
.......................................................................................................................................................... 80-30
CIRCUIT DIAGRAM AND ARRANGEMENT OF CONNECTOR PINS FOR AIR CONDITIONER ......... 80-32
AIR CONDITIONER SYSTEM DIAGRAM ............................................................................................. 80-34
INPUT AND OUTPUT SIGNALS OF AIR CONDITIONER CONTROLLER .................................... 80-35
INSTALLATION LOCATIONS OF AIR CONDITIONER PARTS AND ARRANGEMENT OF CONNECTORS ..
.......................................................................................................................................................... 80-37
TESTING AIR LEAKAGE (DUCT)......................................................................................................... 80-46
METHOD FOR TESTING AIR LEAKAGE (DUCT) ......................................................................... 80-46
TESTING AIR CONDITIONER USING SELF-DIAGNOSIS FUNCTION................................................ 80-48
HOW TO OPEN THE ELECTRICAL SYSTEM ABNORMALITY RECORD SCREEN IN SERVICE MODE
OF THE MACHINE MONITOR .......................................................................................................... 80-49
TEST VENT (MODE) CHANGEOVER .................................................................................................. 80-50
METHOD FOR TESTING VENT (MODE) CHANGEOVER ............................................................ 80-50
TESTING FRESH/RECIRC AIR CHANGEOVER.................................................................................. 80-51
METHOD FOR TESTING FRESH/RECIRC AIR CHANGEOVER .................................................. 80-51
TEST SUNLIGHT SENSOR.................................................................................................................. 80-52
METHOD FOR TESTING SUNLIGHT SENSOR............................................................................ 80-52
TEST (DUAL) PRESSURE SWITCH FOR REFRIGERANT.................................................................. 80-53
METHOD FOR TESTING (DUAL) PRESSURE SWITCH FOR REFRIGERANT............................ 80-53
TEST RELAYS...................................................................................................................................... 80-55
INDEX 00 INDEX AND FOREWORD
00-16 PC138USLC-11

METHOD FOR TESTING RELAYS ................................................................................................ 80-55
AIR CONDITIONER TROUBLESHOOTING CHART 1 ......................................................................... 80-56
AIR CONDITIONER TROUBLESHOOTING CHART 2 ......................................................................... 80-57
INFORMATION DESCRIBED IN TROUBLESHOOTING TABLE........................................................... 80-60
FAILURE CODE [879AKA].................................................................................................................... 80-62
FAILURE CODE [879AKB].................................................................................................................... 80-63
FAILURE CODE [879BKA].................................................................................................................... 80-64
FAILURE CODE [879BKB].................................................................................................................... 80-66
FAILURE CODE [879CKA].................................................................................................................... 80-68
FAILURE CODE [879CKB].................................................................................................................... 80-69
FAILURE CODE [879DKZ].................................................................................................................... 80-70
FAILURE CODE [879EMC] ................................................................................................................... 80-72
FAILURE CODE [879FMC] ................................................................................................................... 80-73
FAILURE CODE [879GKX] ................................................................................................................... 80-74
A-1 TROUBLESHOOTING FOR POWER SUPPLY SYSTEM (AIR CONDITIONER DOES NOT OPERATE).
.......................................................................................................................................................... 80-76
A-2 TROUBLESHOOTING FOR COMPRESSOR AND REFRIGERANT SYSTEM (AIR IS NOT COOLED)...
.......................................................................................................................................................... 80-78
A-3 TROUBLESHOOTING FOR BLOWER MOTOR SYSTEM (NO AIR COMES OUT OR AIR FLOW IS
ABNORMAL) ..................................................................................................................................... 80-81
A-4 TROUBLESHOOTING FOR FRESH/RECIRC AIR CHANGEOVER............................................... 80-83
TROUBLESHOOTING USING GAUGE PRESSURE............................................................................ 80-85
CONNECTION OF SERVICE TOOL ..................................................................................................... 80-87
METHOD FOR CONNECTING SERVICE TOOL ........................................................................... 80-87
PRECAUTIONS FOR DISCONNECTING AND CONNECTING HOSES AND TUBES IN AIR CONDITION-
ER PIPINGS...................................................................................................................................... 80-89
HANDLE COMPRESSOR OIL .............................................................................................................. 80-91
METHOD FOR REPLACING DESICCANT ........................................................................................... 80-93
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 ................................................................................................. 90-13
ELECTRICAL CIRCUIT DIAGRAM ....................................................................................................... 90-15
SYMBOLS USED IN ELECTRICAL CIRCUIT DIAGRAM............................................................... 90-15
ELECTRICAL CIRCUIT DIAGRAM (1/9)........................................................................................ 90-19
ELECTRICAL CIRCUIT DIAGRAM (2/9)........................................................................................ 90-21
ELECTRICAL CIRCUIT DIAGRAM (3/9)........................................................................................ 90-23
ELECTRICAL CIRCUIT DIAGRAM (4/9)........................................................................................ 90-25
ELECTRICAL CIRCUIT DIAGRAM (5/9)........................................................................................ 90-27
ELECTRICAL CIRCUIT DIAGRAM (6/9)........................................................................................ 90-29
ELECTRICAL CIRCUIT DIAGRAM (7/9)........................................................................................ 90-31
ELECTRICAL CIRCUIT DIAGRAM (8/9)........................................................................................ 90-33
ELECTRICAL CIRCUIT DIAGRAM (9/9)........................................................................................ 90-35
INDEX..................................................................................................................................................................1
00 INDEX AND FOREWORD INDEX
PC138USLC-11 00-17

ABBREVIATION LIST
• This list of abbreviations includes the abbreviations used in the text of the shop manual for parts, compo-
nents, and functions whose meaning is not immediately clear. The spelling is given in full with an outline of
the meaning.
• Abbreviations that are used in general society may not be included.
• Special abbreviations which appear infrequently are noted in the text.
• This list of abbreviations consists of two parts. The first part is a list of the abbreviations used in the text of
the manual, and the second part is a list of the abbreviations used in the circuit diagrams.
List of abbreviations used in the text
Abbrevia-
tion Actual word spelled out
Purpose of use (major ap-
plicable machine (*1), or
component/system)
Explanation
ABS Anti-skid Brake System
Travel and brake When the tires skid (wheels stop rotating), the
brakes are released, and when the wheels start
to rotate, the brakes are applied again.
(HD, HM)
AISS Automatic Idling Setting
System Engine This function automatically sets the idle speed.
AJSS Advanced Joystick
Steering System
Steering A lever is used to perform the steering operations
instead of a steering wheel. Moreover, it shifts
gear and changes direction (FORWARD or RE-
VERSE).
(WA)
ARAC Automatic Retarder Ac-
celerator Control
Travel and brake When the accelerator pedal is released while the
machine is traveling downhill, this function auto-
matically applies the retarder with a constant
braking force.
(HD, HM)
ARSC Automatic Retarder
Speed Control
Travel and brake When the accelerator pedal is released while the
machine is traveling downhill, this function auto-
matically applies the retarder to ensure that the
machine speed does not accelerate above the
speed set by the operator.
(HD, HM)
ASR Automatic Spin Regula-
tor
Travel and brake When the tires spin on soft ground surfaces, this
function automatically uses the optimum braking
force to drive both wheels.
(HD, HM)
ATT Attachment Work equipment A device that can be fixed onto the standard ma-
chine in order to enable it to do different jobs.
BCV Brake cooling oil control
valve
Brake When the retarder is not being used, this valve
bypasses part of the brake cooling oil to reduce
the load on the hydraulic pump.
(HD)
CAN Controller Area Network Communication and elec-
tronic control
One of communication standards that is used in
the network on the machine.
CDR Crankcase Depression
Regulator Engine
A regulator valve which is installed to KCCV ven-
tilator. It is written as CDR valve and it is not
used independently.
CLSS Closed-center Load
Sensing System Hydraulic system
This system can simultaneously actuate multiple
actuators regardless of the load (provides better
combined operation than OLSS).
CRI Common Rail Injection Engine
Engine controller electronically controls supply
pump, common rail, and injector. This function
maintains optimum fuel injection amount and fuel
injection timing.
ABBREVIATION LIST 00 INDEX AND FOREWORD
00-18 PC138USLC-11