Komatsu PC170LC-11 Install guide

HYDRAULIC
EXCAVATOR
SEN06607-03
PC170LC-11
SERIAL NUMBERS
35001
and up

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00 INDEX AND FOREWORD
PC170LC-11 00-1
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INDEX
00 INDEX AND FOREWORD ........................................................................................................................ 00-1
ABBREVIATION LIST ........................................................................................................................... 00-18
FOREWORD, SAFETY, BASIC INFORMATION ................................................................................... 00-23
HOW TO READ THE SHOP MANUAL........................................................................................... 00-23
SAFETY NOTICE FOR OPERATION............................................................................................. 00-25
PRECAUTIONS TO PREVENT FIRE............................................................................................. 00-33
ACTIONS IF FIRE OCCURS ......................................................................................................... 00-35
PRECAUTIONS FOR DISPOSING OF WASTE MATERIALS ........................................................ 00-36
ACTIONS TAKEN TO MEET EXHAUST GAS REGULATIONS...................................................... 00-37
PRECAUTIONS FOR DEF............................................................................................................. 00-38
STORE AdBlue/DEF ...................................................................................................................... 00-39
PRECAUTIONS FOR HANDLING HYDRAULIC EQUIPMENT ...................................................... 00-40
PRECAUTIONS FOR DISCONNECTION AND CONNECTION OF PIPINGS................................ 00-43
PRECAUTIONS FOR HANDLING ELECTRICAL EQUIPMENT..................................................... 00-49
PRECAUTIONS FOR HANDLING FUEL SYSTEM EQUIPMENT .................................................. 00-51
PRECAUTIONS FOR HANDLING INTAKE SYSTEM EQUIPMENT .............................................. 00-52
PRACTICAL USE OF KOMTRAX .................................................................................................. 00-53
DISCONNECT AND CONNECT PUSH-PULL TYPE COUPLER ................................................... 00-54
PRECAUTIONS FOR DISCONNECTION AND CONNECTION OF CONNECTORS ..................... 00-58
METHOD FOR DISCONNECTING AND CONNECTING DEUTSCH CONNECTOR ..................... 00-62
METHOD FOR DISCONNECTING AND CONNECTING SLIDE LOCK TYPE CONNECTOR ....... 00-63
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH LOCK TO PULL ... 00-65
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH LOCK TO PUSH .. 00-66
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH HOUSING TO ROTATE .
................................................................................................................................................... 00-68
HOW TO READ ELECTRICAL WIRE CODE ................................................................................. 00-69
EXPLANATION OF TERMS FOR MAINTENANCE STANDARD.................................................... 00-73
STANDARD TIGHTENING TORQUE TABLE................................................................................. 00-76
CONVERSION TABLE ................................................................................................................... 00-83
01 SPECIFICATIONS .................................................................................................................................... 01-1
CONTENTS ............................................................................................................................................ 01-2
ABBREVIATION LIST ............................................................................................................................. 01-3
SPECIFICATIONS .................................................................................................................................. 01-8
SPECIFICATION DRAWING............................................................................................................ 01-8
WORKING RANGE DRAWINGS ..................................................................................................... 01-9
SPECIFICATIONS ......................................................................................................................... 01-10
WEIGHT TABLE ............................................................................................................................ 01-13
TABLE OF FUEL, COOLANT, AND LUBRICANTS ........................................................................ 01-15
10 STRUCTURE AND FUNCTION ................................................................................................................ 10-1
CONTENTS ............................................................................................................................................ 10-2
ABBREVIATION LIST ............................................................................................................................. 10-5
UREA SCR SYSTEM............................................................................................................................ 10-10
LAYOUT DRAWING OF UREA SCR SYSTEM .............................................................................. 10-10
UREA SCR SYSTEM DIAGRAM ................................................................................................... 10-15
FUNCTION OF UREA SCR SYSTEM............................................................................................ 10-16
COMPONENT PARTS OF UREA SCR SYSTEM........................................................................... 10-34
BOOT-UP SYSTEM .............................................................................................................................. 10-43
LAYOUT DRAWING OF BOOT-UP SYSTEM................................................................................. 10-43
SYSTEM OPERATING LAMP SYSTEM ........................................................................................ 10-45
BATTERY DISCONNECT SWITCH ............................................................................................... 10-47
ENGINE SYSTEM ................................................................................................................................ 10-48
LAYOUT DRAWING OF ENGINE SYSTEM................................................................................... 10-48
ENGINE CONTROL SYSTEM ....................................................................................................... 10-50
AUTO-DECELERATION SYSTEM ................................................................................................. 10-53
ENGINE AUTOMATIC WARM-UP SYSTEM .................................................................................. 10-55
OVERHEAT PREVENTION SYSTEM ............................................................................................ 10-57
INDEX 00 INDEX AND FOREWORD
00-2 PC170LC-11
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TURBOCHARGER PROTECTION SYSTEM ................................................................................. 10-60
AUTOMATIC IDLE STOP SYSTEM ............................................................................................... 10-62
COMPONENT PARTS OF ENGINE SYSTEM ............................................................................... 10-65
COOLING SYSTEM.............................................................................................................................. 10-82
LAYOUT DRAWING OF COOLING SYSTEM ................................................................................ 10-82
FAN SPEED CONTROL SYSTEM OF FAN CLUTCH .................................................................... 10-84
ENGINE OUTPUT CONTROL SYSTEM OF FAN CLUTCH........................................................... 10-86
COMPONENT PARTS OF COOLING SYSTEM............................................................................. 10-88
CONTROL SYSTEM............................................................................................................................. 10-89
LAYOUT DRAWING OF CONTROL SYSTEM ............................................................................... 10-89
MACHINE MONITOR SYSTEM ..................................................................................................... 10-92
KomVision SYSTEM ...................................................................................................................... 10-94
KOMTRAX SYSTEM...................................................................................................................... 10-98
COMPONENT PARTS OF CONTROL SYSTEM............................................................................ 10-99
HYDRAULIC SYSTEM.........................................................................................................................10-137
LAYOUT DRAWING OF HYDRAULIC SYSTEM ...........................................................................10-137
CLSS ............................................................................................................................................10-141
ENGINE AND PUMP COMBINED CONTROL SYSTEM...............................................................10-144
PUMP AND VALVE CONTROL SYSTEM .....................................................................................10-150
COMPONENT PARTS OF HYDRAULIC SYSTEM .......................................................................10-153
WORK EQUIPMENT SYSTEM ............................................................................................................10-242
LAYOUT DRAWING OF WORK EQUIPMENT SYSTEM ..............................................................10-242
ONE-TOUCH POWER MAXIMIZING SYSTEM ............................................................................10-246
PPC LOCK SYSTEM ....................................................................................................................10-248
WORK EQUIPMENT AND TRAVEL AUTOMATIC LOCK SYSTEM ..............................................10-249
OIL FLOW ADJUSTER SYSTEM FOR ATTACHMENT.................................................................10-251
COMPONENT PARTS OF WORK EQUIPMENT SYSTEM...........................................................10-253
SWING SYSTEM .................................................................................................................................10-275
LAYOUT DRAWING OF SWING SYSTEM ...................................................................................10-275
SWING CONTROL SYSTEM DIAGRAM ......................................................................................10-279
COMPONENT PARTS OF SWING SYSTEM................................................................................10-282
TRAVEL SYSTEM................................................................................................................................10-288
LAYOUT DRAWING OF TRAVEL SYSTEM ..................................................................................10-288
TRAVEL CONTROL SYSTEM DIAGRAM .....................................................................................10-291
COMPONENT PARTS OF TRAVEL SYSTEM ..............................................................................10-293
UNDERCARRIAGE AND FRAME........................................................................................................10-314
LAYOUT DRAWING OF UNDERCARRIAGE................................................................................10-314
WORK EQUIPMENT............................................................................................................................10-316
STRUCTURE OF WORK EQUIPMENT ........................................................................................10-316
FUNCTION OF WORK EQUIPMENT ...........................................................................................10-317
WORK EQUIPMENT CLEARANCE ADJUSTMENT SHIM............................................................10-318
BUCKET CLEARANCE ADJUSTMENT SHIM ..............................................................................10-319
CAB AND ITS ATTACHMENTS ...........................................................................................................10-320
ROPS CAB ...................................................................................................................................10-320
CAB MOUNT ................................................................................................................................10-321
CAB TIPPING STOPPER .............................................................................................................10-322
20 STANDARD VALUE TABLE ...................................................................................................................... 20-1
CONTENTS ............................................................................................................................................ 20-2
ABBREVIATION LIST ............................................................................................................................. 20-3
STANDARD VALUE TABLE FOR ENGINE ............................................................................................. 20-8
STANDARD VALUE TABLE FOR ENGINE: PC170LC-11 ................................................................ 20-8
STANDARD VALUE TABLE FOR MACHINE......................................................................................... 20-12
STANDARD VALUE TABLE FOR MACHINE: PC170LC-11 ........................................................... 20-12
MACHINE POSTURE AND PROCEDURE FOR MEASURING PERFORMANCE ......................... 20-25
30 TESTING AND ADJUSTING..................................................................................................................... 30-1
CONTENTS ............................................................................................................................................ 30-2
ABBREVIATION LIST ............................................................................................................................. 30-5
RELATED INFORMATION ON TESTING AND ADJUSTING ................................................................ 30-10
00 INDEX AND FOREWORD INDEX
PC170LC-11 00-3
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TOOLS FOR TESTING AND ADJUSTING..................................................................................... 30-10
SKETCH OF TOOLS FOR TESTING AND ADJUSTING ............................................................... 30-16
ENGINE AND COOLING SYSTEM....................................................................................................... 30-17
TEST ENGINE SPEED .................................................................................................................. 30-17
TEST BOOST PRESSURE............................................................................................................ 30-19
TEST EXHAUST GAS COLOR...................................................................................................... 30-21
TEST AND ADJUST VALVE CLEARANCE .................................................................................... 30-23
TEST COMPRESSION PRESSURE.............................................................................................. 30-26
TEST BLOWBY PRESSURE ......................................................................................................... 30-31
TEST ENGINE OIL PRESSURE .................................................................................................... 30-33
TEST FUEL PRESSURE ............................................................................................................... 30-34
TEST FUEL DISCHARGE, RETURN AND LEAKAGE ................................................................... 30-39
BLEEDING AIR FROM FUEL SYSTEM ......................................................................................... 30-44
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 COOLING FAN SPEED ...................................................................................................... 30-51
TEST SCR RELATED FUNCTIONS............................................................................................... 30-52
CLEAN AdBlue/DEF TANK ............................................................................................................ 30-76
BLEED AIR FROM COOLANT CIRCUIT OF AdBlue/DEF TANK ................................................... 30-80
POWER TRAIN..................................................................................................................................... 30-82
TEST SWING CIRCLE BEARING CLEARANCE ........................................................................... 30-82
UNDERCARRIAGE AND FRAME......................................................................................................... 30-83
TEST AND ADJUST TRACK TENSION......................................................................................... 30-83
HYDRAULIC SYSTEM.......................................................................................................................... 30-85
RELEASE REMAINING PRESSURE FROM HYDRAULIC SYSTEM............................................. 30-85
TEST AND ADJUST OIL PRESSURE IN WORK EQUIPMENT, SWING, AND TRAVEL CIRCUITS........
................................................................................................................................................... 30-88
TEST OIL PRESSURE OF CONTROL CIRCUIT ........................................................................... 30-97
TEST AND ADJUST OIL PRESSURE IN PUMP PC CONTROL CIRCUIT .................................... 30-99
TEST AND ADJUST OIL PRESSURE IN PUMP LS CONTROL CIRCUIT....................................30-103
TEST OUTLET PRESSURE OF SOLENOID VALVE ....................................................................30-110
TEST PPC VALVE OUTLET PRESSURE .....................................................................................30-114
ADJUST WORK EQUIPMENT AND SWING PPC VALVES ..........................................................30-116
TEST PUMP SWASH PLATE SENSOR........................................................................................30-117
TEST AND ADJUST TRAVEL DEVIATION ...................................................................................30-118
TEST THE PARTS CAUSING HYDRAULIC DRIFT IN WORK EQUIPMENT................................30-121
TEST OIL LEAKAGE ....................................................................................................................30-123
BLEED AIR FROM HYDRAULIC CIRCUIT ...................................................................................30-126
CAB AND ITS ATTACHMENTS ...........................................................................................................30-130
TEST CAB TIPPING STOPPER ...................................................................................................30-130
METHOD FOR ADJUSTING MIRRORS .......................................................................................30-131
ELECTRICAL SYSTEM .......................................................................................................................30-137
SET AND OPERATE MACHINE MONITOR..................................................................................30-137
METHOD FOR STARTING UP KOMTRAX TERMINAL ................................................................30-212
ADJUST REARVIEW CAMERA ANGLE .......................................................................................30-217
ADJUST KomVision CAMERA ANGLE .........................................................................................30-220
ADJUST KomVision RELATED ITEMS .........................................................................................30-225
HANDLE VOLTAGE CIRCUIT OF ENGINE CONTROLLER .........................................................30-239
HANDLE BATTERY DISCONNECT SWITCH ...............................................................................30-240
TEST DIODES ..............................................................................................................................30-241
Pm CLINIC...........................................................................................................................................30-242
Pm CLINIC SERVICE ...................................................................................................................30-242
40 TROUBLESHOOTING .............................................................................................................................. 40-1
CONTENTS ............................................................................................................................................ 40-2
ABBREVIATION LIST ........................................................................................................................... 40-12
RELATED INFORMATION ON TROUBLESHOOTING ......................................................................... 40-17
INDEX 00 INDEX AND FOREWORD
00-4 PC170LC-11
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GENERAL TROUBLESHOOTING POINTS ................................................................................... 40-17
TROUBLESHOOTING POINTS FOR UREA SCR SYSTEM.......................................................... 40-18
SEQUENCE OF EVENTS IN TROUBLESHOOTING..................................................................... 40-30
CHECKS BEFORE TROUBLESHOOTING.................................................................................... 40-32
INSPECTION PROCEDURE BEFORE TROUBLESHOOTING ..................................................... 40-34
TESTING IN ACCORDANCE WITH TESTING PROCEDURE....................................................... 40-36
PREPARATION FOR TROUBLESHOOTING OF ELECTRICAL SYSTEM..................................... 40-59
PROCEDURE FOR TESTING AND TROUBLESHOOTING .......................................................... 40-64
SYMPTOMS OF FAILURE AND TROUBLESHOOTING NUMBERS ............................................. 40-67
INFORMATION DESCRIBED IN TROUBLESHOOTING TABLE.................................................... 40-71
TROUBLESHOOTING METHOD FOR OPEN CIRCUIT IN WIRING HARNESS OF PRESSURE SEN-
SOR SYSTEM............................................................................................................................ 40-73
CONNECTOR LIST AND LAYOUT ................................................................................................ 40-76
CONNECTOR CONTACT IDENTIFICATION ................................................................................. 40-88
T-BRANCH BOX AND T-BRANCH ADAPTER TABLE ..................................................................40-128
FUSE LOCATION TABLE .............................................................................................................40-134
PRECAUTIONS FOR REPLACING KDOC ...................................................................................40-137
PREPARATION OF SHORT CIRCUIT ELECTRICAL CONNECTOR (FOR FAILURE CODES [CA1883]
AND [CA3135])..........................................................................................................................40-138
FAILURE CODES TABLE .............................................................................................................40-140
TROUBLESHOOTING BY FAILURE CODE (DISPLAY OF CODE) .....................................................40-156
FAILURE CODE [879AKA]............................................................................................................40-156
FAILURE CODE [879AKB]............................................................................................................40-157
FAILURE CODE [879BKA]............................................................................................................40-158
FAILURE CODE [879BKB]............................................................................................................40-160
FAILURE CODE [879CKA]............................................................................................................40-162
FAILURE CODE [879CKB]............................................................................................................40-163
FAILURE CODE [879DKZ]............................................................................................................40-164
FAILURE CODE [879EMC] ...........................................................................................................40-166
FAILURE CODE [879FMC] ...........................................................................................................40-167
FAILURE CODE [879GKX] ...........................................................................................................40-168
FAILURE CODE [989L00].............................................................................................................40-170
FAILURE CODE [989M00] ............................................................................................................40-171
FAILURE CODE [989N00] ............................................................................................................40-172
FAILURE CODE [A1U0N3] ...........................................................................................................40-173
FAILURE CODE [A1U0N4] ...........................................................................................................40-175
FAILURE CODE [A900FR]............................................................................................................40-177
FAILURE CODE [A900N6] ............................................................................................................40-178
FAILURE CODE [A900NY]............................................................................................................40-179
FAILURE CODE [AA10NX] ...........................................................................................................40-180
FAILURE CODE [AB00KE] ...........................................................................................................40-182
FAILURE CODE [AQ10MB] ..........................................................................................................40-185
FAILURE CODE [AQ10N3] ...........................................................................................................40-187
FAILURE CODE [AS00N3]............................................................................................................40-189
FAILURE CODE [AS00R2]............................................................................................................40-191
FAILURE CODE [AS00R3]............................................................................................................40-192
FAILURE CODE [AS00R4]............................................................................................................40-193
FAILURE CODE [AS00R5]............................................................................................................40-194
FAILURE CODE [AS00R6]............................................................................................................40-195
FAILURE CODE [AS00ZK]............................................................................................................40-196
FAILURE CODE [AS10KM]...........................................................................................................40-197
FAILURE CODE [AS10NR] ...........................................................................................................40-198
FAILURE CODE [AS10NT] ...........................................................................................................40-200
FAILURE CODE [B@BAZG] .........................................................................................................40-201
FAILURE CODE [B@BAZK]..........................................................................................................40-202
FAILURE CODE [B@BCNS] .........................................................................................................40-204
FAILURE CODE [B@BCZK] .........................................................................................................40-205
FAILURE CODE [B@HANS] .........................................................................................................40-207
00 INDEX AND FOREWORD INDEX
PC170LC-11 00-5
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FAILURE CODE [CA115] ..............................................................................................................40-208
FAILURE CODE [CA122]..............................................................................................................40-209
FAILURE CODE [CA123]..............................................................................................................40-211
FAILURE CODE [CA131]..............................................................................................................40-213
FAILURE CODE [CA132]..............................................................................................................40-215
FAILURE CODE [CA144]..............................................................................................................40-217
FAILURE CODE [CA145]..............................................................................................................40-219
FAILURE CODE [CA153]..............................................................................................................40-221
FAILURE CODE [CA154]..............................................................................................................40-224
FAILURE CODE [CA187]..............................................................................................................40-226
FAILURE CODE [CA221]..............................................................................................................40-228
FAILURE CODE [CA222]..............................................................................................................40-230
FAILURE CODE [CA227]..............................................................................................................40-232
FAILURE CODE [CA234]..............................................................................................................40-234
FAILURE CODE [CA238]..............................................................................................................40-235
FAILURE CODE [CA239]..............................................................................................................40-236
FAILURE CODE [CA249]..............................................................................................................40-237
FAILURE CODE [CA256]..............................................................................................................40-239
FAILURE CODE [CA271]..............................................................................................................40-241
FAILURE CODE [CA272]..............................................................................................................40-243
FAILURE CODE [CA295]..............................................................................................................40-245
FAILURE CODE [CA322]..............................................................................................................40-246
FAILURE CODE [CA324]..............................................................................................................40-248
FAILURE CODE [CA331]..............................................................................................................40-250
FAILURE CODE [CA332]..............................................................................................................40-252
FAILURE CODE [CA343]..............................................................................................................40-254
FAILURE CODE [CA351]..............................................................................................................40-255
FAILURE CODE [CA352]..............................................................................................................40-257
FAILURE CODE [CA356]..............................................................................................................40-259
FAILURE CODE [CA357]..............................................................................................................40-261
FAILURE CODE [CA386]..............................................................................................................40-263
FAILURE CODE [CA428]..............................................................................................................40-264
FAILURE CODE [CA429]..............................................................................................................40-266
FAILURE CODE [CA435]..............................................................................................................40-268
FAILURE CODE [CA441]..............................................................................................................40-270
FAILURE CODE [CA442]..............................................................................................................40-272
FAILURE CODE [CA451]..............................................................................................................40-274
FAILURE CODE [CA452]..............................................................................................................40-276
FAILURE CODE [CA488]..............................................................................................................40-278
FAILURE CODE [CA515]..............................................................................................................40-279
FAILURE CODE [CA516]..............................................................................................................40-281
FAILURE CODE [CA553]..............................................................................................................40-283
FAILURE CODE [CA555]..............................................................................................................40-284
FAILURE CODE [CA556]..............................................................................................................40-285
FAILURE CODE [CA559]..............................................................................................................40-286
FAILURE CODE [CA595]..............................................................................................................40-289
FAILURE CODE [CA687]..............................................................................................................40-291
FAILURE CODE [CA689]..............................................................................................................40-293
FAILURE CODE [CA691]..............................................................................................................40-295
FAILURE CODE [CA692]..............................................................................................................40-297
FAILURE CODE [CA697]..............................................................................................................40-299
FAILURE CODE [CA698]..............................................................................................................40-300
FAILURE CODE [CA731]..............................................................................................................40-301
FAILURE CODE [CA778]..............................................................................................................40-303
FAILURE CODE [CA1117] ............................................................................................................40-308
FAILURE CODE [CA1664] ............................................................................................................40-310
FAILURE CODE [CA1669] ............................................................................................................40-312
FAILURE CODE [CA1673] ............................................................................................................40-313
INDEX 00 INDEX AND FOREWORD
00-6 PC170LC-11
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FAILURE CODE [CA1677] ............................................................................................................40-314
FAILURE CODE [CA1678] ............................................................................................................40-315
FAILURE CODE [CA1682] ............................................................................................................40-316
FAILURE CODE [CA1683] ............................................................................................................40-318
FAILURE CODE [CA1684] ............................................................................................................40-320
FAILURE CODE [CA1686] ............................................................................................................40-322
FAILURE CODE [CA1691] ............................................................................................................40-323
FAILURE CODE [CA1694] ............................................................................................................40-325
FAILURE CODE [CA1695] ............................................................................................................40-327
FAILURE CODE [CA1696] ............................................................................................................40-328
FAILURE CODE [CA1712] ............................................................................................................40-330
FAILURE CODE [CA1713] ............................................................................................................40-332
FAILURE CODE [CA1714] ............................................................................................................40-334
FAILURE CODE [CA1715] ............................................................................................................40-335
FAILURE CODE [CA1776] ............................................................................................................40-336
FAILURE CODE [CA1777] ............................................................................................................40-338
FAILURE CODE [CA1843] ............................................................................................................40-341
FAILURE CODE [CA1844] ............................................................................................................40-343
FAILURE CODE [CA1885] ............................................................................................................40-345
FAILURE CODE [CA1887] ............................................................................................................40-347
FAILURE CODE [CA1896] ............................................................................................................40-349
FAILURE CODE [CA1898] ............................................................................................................40-350
FAIULER CODE [CA1938] ............................................................................................................40-352
FAILURE CODE [CA1942] ............................................................................................................40-354
FAILURE CODE [CA1961] ............................................................................................................40-355
FAILURE CODE [CA1962] ............................................................................................................40-356
FAILURE CODE [CA2185] ............................................................................................................40-357
FAILURE CODE [CA2186] ............................................................................................................40-358
FAILURE CODE [CA2198] ............................................................................................................40-359
FAILURE CODE [CA2249] ............................................................................................................40-361
FAILURE CODE [CA2272] ............................................................................................................40-362
FAILURE CODE [CA2288] ............................................................................................................40-364
FAILURE CODE [CA2311] ............................................................................................................40-365
FAILURE CODE [CA2349] ............................................................................................................40-366
FAILURE CODE [CA2353] ............................................................................................................40-368
FAILURE CODE [CA2357] ............................................................................................................40-370
FAILURE CODE [CA2373] ............................................................................................................40-371
FAILURE CODE [CA2374] ............................................................................................................40-373
FAILURE CODE [CA2375] ............................................................................................................40-375
FAILURE CODE [CA2376] ............................................................................................................40-377
FAILURE CODE [CA2387] ............................................................................................................40-379
FAILURE CODE [CA2554] ............................................................................................................40-380
FAILURE CODE [CA2634] ............................................................................................................40-381
FAILURE CODE [CA2635] ............................................................................................................40-382
FAIULER CODE [CA2636] ............................................................................................................40-383
FAILURE CODE [CA2637] ............................................................................................................40-385
FAILURE CODE [CA2771] ............................................................................................................40-387
FAILURE CODE [CA2961] ............................................................................................................40-391
FAILURE CODE [CA2973] ............................................................................................................40-392
FAILURE CODE [CA2976] ............................................................................................................40-393
FAILURE CODE [CA3142] ............................................................................................................40-395
FAILURE CODE [CA3143] ............................................................................................................40-396
FAILURE CODE [CA3144] ............................................................................................................40-397
FAILURE CODE [CA3146] ............................................................................................................40-399
FAILURE CODE [CA3147] ............................................................................................................40-400
FAILURE CODE [CA3148] ............................................................................................................40-401
FAILURE CODE [CA3151] ............................................................................................................40-403
FAILURE CODE [CA3165] ............................................................................................................40-408
00 INDEX AND FOREWORD INDEX
PC170LC-11 00-7
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FAILURE CODE [CA3228] ............................................................................................................40-410
FAILURE CODE [CA3229] ............................................................................................................40-413
FAILURE CODE [CA3231] ............................................................................................................40-415
FAILURE CODE [CA3232] ............................................................................................................40-417
FAILURE CODE [CA3235] ............................................................................................................40-420
FAILURE CODE [CA3239] ............................................................................................................40-422
FAILURE CODE [CA3241] ............................................................................................................40-425
FAILURE CODE [CA3242] ............................................................................................................40-428
FAILURE CODE [CA3251] ............................................................................................................40-430
FAILURE CODE [CA3313] ............................................................................................................40-432
FAILURE CODE [CA3314] ............................................................................................................40-433
FAILURE CODE [CA3315] ............................................................................................................40-434
FAILURE CODE [CA3419] ............................................................................................................40-436
FAILURE CODE [CA3421] ............................................................................................................40-438
FAILURE CODE [CA3497] ............................................................................................................40-440
FAILURE CODE [CA3498] ............................................................................................................40-441
FAILURE CODE [CA3545] ............................................................................................................40-442
FAILURE CODE [CA3547] ............................................................................................................40-444
FAILURE CODE [CA3558] ............................................................................................................40-445
FAILURE CODE [CA3559] ............................................................................................................40-447
FAILURE CODE [CA3562] ............................................................................................................40-449
FAILURE CODE [CA3563] ............................................................................................................40-451
FAILURE CODE [CA3567] ............................................................................................................40-454
FAILURE CODE [CA3568] ............................................................................................................40-457
FAILURE CODE [CA3571] ............................................................................................................40-461
FAILURE CODE [CA3572] ............................................................................................................40-463
FAILURE CODE [CA3574] ............................................................................................................40-465
FAILURE CODE [CA3575] ............................................................................................................40-467
FAILURE CODE [CA3577] ............................................................................................................40-469
FAILURE CODE [CA3578] ............................................................................................................40-471
FAILURE CODE [CA3582] ............................................................................................................40-473
FAILURE CODE [CA3583] ............................................................................................................40-478
FAILURE CODE [CA3596] ............................................................................................................40-480
FAILURE CODE [CA3649] ............................................................................................................40-483
FAILURE CODE [CA3681] ............................................................................................................40-485
FAILURE CODE [CA3682] ............................................................................................................40-489
FAILURE CODE [CA3713] ............................................................................................................40-493
FAILURE CODE [CA3717] ............................................................................................................40-496
FAILURE CODE [CA3718] ............................................................................................................40-497
FAIULER CODE [CA3724] ............................................................................................................40-498
FAILURE CODE [CA3725] ............................................................................................................40-499
FAILURE CODE [CA3741] ............................................................................................................40-502
FAILURE CODE [CA3748] ............................................................................................................40-503
FAILURE CODE [CA3755] ............................................................................................................40-506
FAILURE CODE [CA3866] ............................................................................................................40-508
FAILURE CODE [CA3868] ............................................................................................................40-511
FAILURE CODE [CA4152] ............................................................................................................40-514
FAILURE CODE [CA4155] ............................................................................................................40-517
FAILURE CODE [CA4156] ............................................................................................................40-519
FAILURE CODE [CA4157] ............................................................................................................40-522
FAILURE CODE [CA4159] ............................................................................................................40-524
FAILURE CODE [CA4164] ............................................................................................................40-525
FAILURE CODE [CA4165] ............................................................................................................40-527
FAILURE CODE [CA4166] ............................................................................................................40-529
FAILURE CODE [CA4168] ............................................................................................................40-530
FAILURE CODE [CA4169] ............................................................................................................40-533
FAILURE CODE [CA4171] ............................................................................................................40-535
FAILURE CODE [CA4249] ............................................................................................................40-538
INDEX 00 INDEX AND FOREWORD
00-8 PC170LC-11
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FAILURE CODE [CA4251] ............................................................................................................40-540
FAILURE CODE [CA4261] ............................................................................................................40-543
FAILURE CODE [CA4277] ............................................................................................................40-546
FAILURE CODE [CA4459] ............................................................................................................40-549
FAILURE CODE [CA4461] ............................................................................................................40-552
FAILURE CODE [CA4533] ............................................................................................................40-555
FAILURE CODE [CA4534] ............................................................................................................40-556
FAILURE CODE [CA4731] ............................................................................................................40-557
FAILURE CODE [CA4732] ............................................................................................................40-558
FAILURE CODE [CA4739] ............................................................................................................40-559
FAILURE CODE [CA4768] ............................................................................................................40-560
FAILURE CODE [CA4769] ............................................................................................................40-562
FAILURE CODE [CA4842] ............................................................................................................40-565
FAILURE CODE [CA4952] ............................................................................................................40-568
FAILURE CODE [CA5115] ............................................................................................................40-570
FAILURE CODE [CA5179] ............................................................................................................40-573
FAILURE CODE [CA5181] ............................................................................................................40-575
FAILURE CODE [CA5387] ............................................................................................................40-577
FAILURE CODE [CA5388] ............................................................................................................40-579
FAILURE CODE [CA5389] ............................................................................................................40-582
FAILURE CODE [CA5391] ............................................................................................................40-584
FAILURE CODE [CA5392] ............................................................................................................40-588
FAILURE CODE [CA5393] ............................................................................................................40-590
FAILURE CODE [CA5394] ............................................................................................................40-592
FAILURE CODE [CA5395] ............................................................................................................40-594
FAILURE CODE [CA5396] ............................................................................................................40-597
FAILURE CODE [CA5631] ............................................................................................................40-598
FAILURE CODE [CA5632] ............................................................................................................40-600
FAILURE CODE [CA5938] ............................................................................................................40-601
FAILURE CODE [D110KB]............................................................................................................40-603
FAILURE CODE [D19JKZ] ............................................................................................................40-605
FAILURE CODE [D811MC] ...........................................................................................................40-608
FAILURE CODE [D862KA]............................................................................................................40-609
FAILURE CODE [D8ALKA] ...........................................................................................................40-610
FAILURE CODE [D8ALKB] ...........................................................................................................40-612
FAILURE CODE [D8AQKR] ..........................................................................................................40-614
FAILURE CODE [DA20MC] ..........................................................................................................40-618
FAILURE CODE [DA22KK] ...........................................................................................................40-619
FAILURE CODE [DA25KP] ...........................................................................................................40-622
FAILURE CODE [DA29KQ]...........................................................................................................40-625
FAILURE CODE [DA2LKA] ...........................................................................................................40-627
FAILURE CODE [DA2LKB] ...........................................................................................................40-629
FAILURE CODE [DA2QKR] ..........................................................................................................40-631
FAILURE CODE [DA2RKR] ..........................................................................................................40-636
FAILURE CODE [DAF0KM] ..........................................................................................................40-641
FAILURE CODE [DAF0MB] ..........................................................................................................40-642
FAILURE CODE [DAF0MC] ..........................................................................................................40-643
FAILURE CODE [DAF8KB] ...........................................................................................................40-644
FAILURE CODE [DAF9KQ]...........................................................................................................40-646
FAILURE CODE [DAFGMC] .........................................................................................................40-647
FAILURE CODE [DAFLKA] ...........................................................................................................40-648
FAILURE CODE [DAFLKB] ...........................................................................................................40-650
FAILURE CODE [DAFQKR] ..........................................................................................................40-652
FAILURE CODE [DAZ9KQ]...........................................................................................................40-656
FAILURE CODE [DAZQKR] ..........................................................................................................40-657
FAILURE CODE [DB2QKR] ..........................................................................................................40-661
FAILURE CODE [DB2RKR] ..........................................................................................................40-666
FAILURE CODE [DBP0KM] ..........................................................................................................40-671
00 INDEX AND FOREWORD INDEX
PC170LC-11 00-9

FAILURE CODE [DBP0KT] ...........................................................................................................40-672
FAILURE CODE [DBPQKR]..........................................................................................................40-673
FAILURE CODE [DDNRKA]..........................................................................................................40-678
FAILURE CODE [DDNRKY]..........................................................................................................40-680
FAILURE CODE [DDNS00]...........................................................................................................40-682
FAILURE CODE [DGH2KA] ..........................................................................................................40-684
FAILURE CODE [DGH2KB] ..........................................................................................................40-686
FAILURE CODE [DHA4KA]...........................................................................................................40-688
FAILURE CODE [DHPAMA] ..........................................................................................................40-690
FAILURE CODE [DHPBMA]..........................................................................................................40-693
FAILURE CODE [DHS3MA] ..........................................................................................................40-696
FAILURE CODE [DHS4MA] ..........................................................................................................40-699
FAILURE CODE [DHS5MA] ..........................................................................................................40-702
FAILURE CODE [DHS8MA] ..........................................................................................................40-705
FAILURE CODE [DHS9MA] ..........................................................................................................40-708
FAILURE CODE [DHSAMA]..........................................................................................................40-711
FAILURE CODE [DHSBMA]..........................................................................................................40-714
FAILURE CODE [DHSCMA] .........................................................................................................40-717
FAILURE CODE [DHSDMA] .........................................................................................................40-720
FAILURE CODE [DKR0MA] ..........................................................................................................40-723
FAILURE CODE [DKULKA]...........................................................................................................40-726
FAILURE CODE [DKULKB]...........................................................................................................40-728
FAILURE CODE [DKULKY]...........................................................................................................40-730
FAILURE CODE [DLM5KA]...........................................................................................................40-732
FAILURE CODE [DLM5MB] ..........................................................................................................40-734
FAILURE CODE [DR10KA] ...........................................................................................................40-736
FAILURE CODE [DR21KX] ...........................................................................................................40-739
FAILURE CODE [DR31KX] ...........................................................................................................40-741
FAILURE CODE [DUMBKA]..........................................................................................................40-743
FAILURE CODE [DUMBKB]..........................................................................................................40-745
FAILURE CODE [DV20KB] ...........................................................................................................40-747
FAILURE CODE [DW43KA] ..........................................................................................................40-749
FAILURE CODE [DW43KB] ..........................................................................................................40-751
FAILURE CODE [DW43KY] ..........................................................................................................40-753
FAILURE CODE [DW45KA] ..........................................................................................................40-755
FAILURE CODE [DW45KB] ..........................................................................................................40-758
FAILURE CODE [DW45KY] ..........................................................................................................40-761
FAILURE CODE [DW4CKY]..........................................................................................................40-763
FAILURE CODE [DW91KA] ..........................................................................................................40-765
FAILURE CODE [DW91KB] ..........................................................................................................40-767
FAILURE CODE [DW91KY] ..........................................................................................................40-769
FAILURE CODE [DWA2KA] ..........................................................................................................40-771
FAILURE CODE [DWA2KB] ..........................................................................................................40-773
FAILURE CODE [DWA2KY] ..........................................................................................................40-775
FAILURE CODE [DWJ0KA] ..........................................................................................................40-777
FAILURE CODE [DWJ0KB] ..........................................................................................................40-779
FAILURE CODE [DWJ0KY] ..........................................................................................................40-781
FAILURE CODE [DWK0KA]..........................................................................................................40-783
FAILURE CODE [DWK0KB]..........................................................................................................40-785
FAILURE CODE [DWK0KY]..........................................................................................................40-787
FAILURE CODE [DWK2KA]..........................................................................................................40-789
FAILURE CODE [DWK2KB]..........................................................................................................40-791
FAILURE CODE [DWK2KY]..........................................................................................................40-793
FAILURE CODE [DWN5KA]..........................................................................................................40-795
FAILURE CODE [DWN5KB]..........................................................................................................40-797
FAILURE CODE [DWN5KY]..........................................................................................................40-799
FAILURE CODE [DWNSKA] .........................................................................................................40-801
FAILURE CODE [DWNSKB] .........................................................................................................40-803
INDEX 00 INDEX AND FOREWORD
00-10 PC170LC-11

FAILURE CODE [DWNSKY] .........................................................................................................40-805
FAILURE CODE [DXA8KA]...........................................................................................................40-806
FAILURE CODE [DXA8KB]...........................................................................................................40-808
FAILURE CODE [DXE4KA]...........................................................................................................40-810
FAILURE CODE [DXE4KB]...........................................................................................................40-812
FAILURE CODE [DXE4KY]...........................................................................................................40-814
FAILURE CODE [DXE7KA]...........................................................................................................40-816
FAILURE CODE [DXE7KB]...........................................................................................................40-818
FAILURE CODE [DXE7KY]...........................................................................................................40-820
FAILURE CODE [DXE8KA]...........................................................................................................40-822
FAILURE CODE [DXE8KB]...........................................................................................................40-824
FAILURE CODE [DXE8KY]...........................................................................................................40-826
FAILURE CODE [DXE9KA]...........................................................................................................40-828
FAILURE CODE [DXE9KB]...........................................................................................................40-830
FAILURE CODE [DXE9KY]...........................................................................................................40-832
FAILURE CODE [DXEAKA] ..........................................................................................................40-834
FAILURE CODE [DXEAKB] ..........................................................................................................40-836
FAILURE CODE [DXEAKY] ..........................................................................................................40-838
FAILURE CODE [DY20KA] ...........................................................................................................40-840
FAILURE CODE [DY20MA]...........................................................................................................40-842
FAILURE CODE [DY2CKB]...........................................................................................................40-844
FAILURE CODE [DY2DKB]...........................................................................................................40-847
FAILURE CODE [DY2EKB]...........................................................................................................40-849
TROUBLESHOOTING OF ELECTRICAL SYSTEM (E-MODE) ...........................................................40-851
E-1 ENGINE DOES NOT START (ENGINE DOES NOT CRANK) ................................................40-851
E-2 MANUAL PREHEAT SYSTEM MALFUNCTION .....................................................................40-857
E-3 AUTOMATIC PREHEAT SYSTEM MALFUNCTION ...............................................................40-860
E-4 PREHEAT MONITOR LIGHT DISPLAY IS OFF WHEN ENGINE IS PRE HEATED................40-862
E-5 MONITOR DOES NOT DISPLAY WHEN THE START SWITCH IS IN THE ON POSITION....40-864
E-6 WITH THE START SWITCH IN THE ON POSITION, ENGINE STOPPED, THE MONITOR FOR
ENGINE OIL LEVEL ILLUMINATES YELLOW ..........................................................................40-867
E-7 WITH THE START SWITCH IN THE ON POSITION, ENGINE STOPPED, COOLANT LEVEL
MONITOR ILLUMINATES YELLOW..........................................................................................40-868
E-8 COOLANT TEMPERATURE MONITOR ILLUMINATES WHITE WHEN MACHINE OPERATES.......
..................................................................................................................................................40-869
E-9 THE MONITOR FOR HYDRAULIC OIL TEMPERATURE ILLUMINATES WHITE WHILE MACHINE
OPERATES ...............................................................................................................................40-870
E-10 AIR CLEANER MONITOR ILLUMINATES YELLOW WHEN MACHINE OPERATES ...........40-871
E-11 CHARGE LEVEL LIGHT ILLUMINATES RED WHEN MACHINE OPERATES......................40-872
E-12 FUEL LEVEL MONITOR ILLUMINATES RED WHEN MACHINE OPERATES .....................40-873
E-13 WATER SEPARATOR MONITOR ILLUMINATES RED WHEN MACHINE OPERATES........40-874
E-14 COOLANT TEMPERATURE MONITOR ILLUMINATES RED WHEN MACHINE OPERATES.........
..................................................................................................................................................40-875
E-15 THE MONITOR FOR ENGINE OIL PRESSURE ILLUMINATES RED WHEN MACHINE OPER-
ATES .........................................................................................................................................40-876
E-16 THE MONITOR FOR HYDRAULIC OIL TEMPERATURE ILLUMINATES RED WHILE MACHINE
OPERATES ...............................................................................................................................40-877
E-17 FUEL GAUGE DISPLAY DOES NOT MOVE FROM MINIMUM OR MAXIMUM ...................40-878
E-18 DISPLAY OF FUEL GAUGE DIFFERS FROM ACTUAL FUEL LEVEL.................................40-880
E-19 ENGINE COOLANT TEMPERATURE GAUGE DISPLAY DOES NOT MOVE FROM MINIMUM
OR MAXIMUM...........................................................................................................................40-881
E-20 DISPLAY OF ENGINE COOLANT TEMPERATURE GAUGE DIFFERS FROM ACTUAL COOL-
ANT TEMPERATURE................................................................................................................40-882
E-21 HYDRAULIC OIL TEMPERATURE GAUGE DISPLAY DOES NOT MOVE FROM MINIMUM OR
MAXIMUM .................................................................................................................................40-883
E-22 DISPLAY OF HYDRAULIC OIL TEMPERATURE GAUGE DIFFERS FROM ACTUAL OIL TEM-
PERATURE ...............................................................................................................................40-885
E-23 SOME AREAS OF MACHINE MONITOR SCREEN ARE NOT DISPLAYED ........................40-886
00 INDEX AND FOREWORD INDEX
PC170LC-11 00-11

E-24 FUNCTION SWITCH DOES NOT OPERATE .......................................................................40-887
E-25 AUTOMATIC WARM UP SYSTEM DOES NOT FUNCTION (COLD WEATHER OPERATION).......
..................................................................................................................................................40-888
E-26 ABNORMAL MONITOR LIGHT DISPLAY WHEN AUTO-DECEL SWITCH IS OPERATED ..40-889
E-27 ABNORMAL AUTO-DECEL OPERATION ............................................................................40-890
E-28 ABNORMALITY OF WORK MODE DISPLAY WHEN WORK SWITCH IS ACTIVATED........40-891
E-29 WORK MODE CHANGES IN MONITOR DO NOT EFFECT ENGINE OR HYDRAULIC PUMP ......
..................................................................................................................................................40-892
E-30 MONITOR DOES NOT DISPLAY CHANGES IN MACHINE TRAVEL SPEED ......................40-893
E-31 WHEN TRAVEL SPEED SELECTION IS CHANGED, ACTUAL TRAVEL SPEED DOES NOT
CHANGE...................................................................................................................................40-894
E-32 ALARM BUZZER CANNOT BE CANCELED ........................................................................40-896
E-33 SERVICE METER NOT DISPLAYED WHEN MACHINE IS STARTED .................................40-897
E-34 ABNORMALITY OF SERVICE MODE SELECTION.............................................................40-898
E-35 ALL OF WORK EQUIPMENTS, SWING, AND TRAVEL MECHANISM DO NOT MOVE ......40-899
E-36 ABNORMAL ENGINE SPEEDS WHEN WORK EQUIPMENT IS ACTIVATED .....................40-902
E-37 WHEN SWING BRAKE CANCEL SWITCH IS SET TO CANCEL POSITION, MACHINE CANNOT
SWING ......................................................................................................................................40-904
E-38 WHEN SWING BRAKE CANCEL SWITCH IS SET TO NORMAL POSITION, SWING HOLDING
BRAKE DOES NOT OPERATE .................................................................................................40-907
E-39 ONE-TOUCH POWER MAXIMIZING FUNCTION DOES NOT OPERATE PROPERLY, OR INDI-
CATOR NOT DISPLAYED ON MONITOR .................................................................................40-909
E-40 ONE-TOUCH POWER MAXIMIZING FUNCTION IS NOT CANCELLED .............................40-912
E-41 ALARM DOES NOT SOUND DURING TRAVEL ..................................................................40-913
E-42 ALARM DOES NOT STOP SOUNDING WHILE MACHINE IS STOPPED............................40-915
E-43 HORN DOES NOT SOUND..................................................................................................40-916
E-44 HORN DOES NOT STOP SOUNDING.................................................................................40-919
E-45 ABNORMALITY OF WIPER SWITCH DISPLAY ON MONITOR ...........................................40-921
E-46 WHEN WIPER SWITCH IS OPERATED, WINDSHIELD WIPER DOES NOT OPERATE.....40-922
E-47 WHEN WINDOW WASHER SWITCH IS OPERATED, WINDOW WASHER DOES NOT OPER-
ATE ...........................................................................................................................................40-924
E-48 BOOM RAISE INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION ...
..................................................................................................................................................40-925
E-49 BOOM LOWER INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION .
..................................................................................................................................................40-926
E-50 ARM OUT INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION..........
..................................................................................................................................................40-927
E-51 ARM IN INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION ..40-928
E-52 BUCKET DUMP INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION
..................................................................................................................................................40-929
E-53 BUCKET CURL INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION.
..................................................................................................................................................40-930
E-54 SWING INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION...40-931
E-55 ABNORMALITY OF TRAVEL INDICATOR DISPLAY............................................................40-932
E-56 ABNORMALITY OF SERVICE INDICATOR DISPLAY..........................................................40-933
E-57 ATTACHMENT HYDRAULIC CIRCUIT CANNOT BE CHANGED.........................................40-935
E-58 KOMTRAX SYSTEM DOES NOT OPERATE NORMALLY ...................................................40-936
TROUBLESHOOTING FOR HYDRAULIC AND MECHANICAL SYSTEMS (H MODE) .......................40-937
INFORMATION MENTIONED IN TROUBLESHOOTING TABLE (H MODE).................................40-937
FAILURE MODE AND CAUSE TABLE..........................................................................................40-938
H-1 ALL WORK EQUIPMENT, SWING AND TRAVEL DO NOT WORK........................................40-950
H-2 ALL WORK EQUIPMENT, SWING AND TRAVEL LACK SPEED AND POWER ....................40-951
H-3 ABNORMAL FINE CONTROL................................................................................................40-953
H-4 ABNORMAL SOUND FROM HYDRAULIC PUMP AREA.......................................................40-954
H-5 ENGINE SPEED DROPS LARGELY OR ENGINE STOPS ....................................................40-955
H-6 SPEED OR POWER OF BOOM IS LOW ...............................................................................40-957
H-7 LOW ARM SPEED OR POWER ............................................................................................40-960
H-8 LOW BUCKET SPEED OR POWER ......................................................................................40-964
INDEX 00 INDEX AND FOREWORD
00-12 PC170LC-11

H-9 WORK EQUIPMENT DOES NOT MOVE WITH INDIVIDUAL FUNCTION .............................40-966
H-10 HYDRAULIC DRIFT OF BOOM IS LARGE ..........................................................................40-967
H-11 EXCESSIVE ARM DRIFT .....................................................................................................40-968
H-12 HYDRAULIC DRIFT OF BUCKET IS LARGE.......................................................................40-970
H-13 WHEN SINGLE WORK EQUIPMENT IS RELIEVED HYDRAULICALLY, OTHER WORK EQUIP-
MENT MOVES ..........................................................................................................................40-971
H-14 TIME LAG OF WORK EQUIPMENT IS LARGE ...................................................................40-972
H-15 ONE-TOUCH POWER MAXIMIZING FUNCTION DOES NOT OPERATE ...........................40-973
H-16 ATTACHMENT CIRCUIT CANNOT BE CHANGED..............................................................40-974
H-17 OIL FLOW IN ATTACHMENT CIRCUIT CANNOT BE CHANGED .......................................40-975
H-18 WORK EQUIPMENT IS SLOW IN COMBINED OPERATION ..............................................40-976
H-19 IN COMBINED OPERATION OF SWING AND TRAVEL, TRAVEL SPEED DROPS LARGELY ......
..................................................................................................................................................40-977
H-20 BOOM RAISE SPEED IS SLOW WHEN COMBINED WITH SWING FUNCTION ................40-978
H-21 MACHINE DOES NOT TRAVEL STRAIGHT ........................................................................40-979
H-22 MACHINE IS NOT STEERED WELL OR STEERING POWER IS LOW...............................40-982
H-23 TRAVEL SPEED IS LOW .....................................................................................................40-984
H-24 ONE OF TRACKS DOES NOT RUN ....................................................................................40-986
H-25 TRAVEL SPEED DOES NOT CHANGE, OR TRAVEL SPEED IS TOO SLOW OR FAST ....40-987
H-26 UPPER STRUCTURE DOES NOT SWING BOTH TO THE RIGHT AND LEFT ...................40-988
H-27 SWINGS ONLY IN ONE DIRECTION...................................................................................40-989
H-28 SWING ACCELERATION OR SWING SPEED IS LOW IN BOTH DIRECTIONS (RIGHT AND
LEFT) ........................................................................................................................................40-990
H-29 SWING ACCELERATION PERFORMANCE IS POOR OR SWING SPEED IS SLOW IN ONLY
ONE DIRECTION ......................................................................................................................40-991
H-30 UPPER STRUCTURE OVERRUNS EXCESSIVELY WHEN IT STOPS SWINGING (BOTH
RIGHT AND LEFT)....................................................................................................................40-992
H-31 UPPER STRUCTURE OVERRUNS EXCESSIVELY WHEN IT STOPS SWINGING (ONLY ONE
DIRECTION EITHER RIGHT OR LEFT)....................................................................................40-993
H-32 SHOCK IS LARGE WHEN UPPER STRUCTURE STOPS SWINGING ...............................40-994
H-33 LARGE UNUSUAL NOISE IS HEARD WHEN UPPER STRUCTURE STOPS SWINGING..40-995
H-34 SWING DRIFT ON A SLOPE IS LARGE (WHILE SWING PARKING BRAKE IS APPLIED).40-996
H-35 SWING DRIFT ON A SLOPE IS LARGE (WHILE SWING PARKING BRAKE IS RELEASED) ........
..................................................................................................................................................40-997
H-36 FAN SPEED IS ABNORMAL (TOO HIGH OR LOW, OR STATIONARY) ..............................40-998
H-37 UNUSUAL NOISE IS HEARD FROM AROUND FAN ...........................................................40-999
TROUBLESHOOTING OF ENGINE (S-MODE) .................................................................................40-1000
INFORMATION MENTIONED IN TROUBLESHOOTING TABLE (S MODE)...............................40-1000
S-1 ENGINE DOES NOT CRANK WHEN STARTING SWITCH IS TURNED TO START POSITION.......
................................................................................................................................................40-1001
S-2 ENGINE CRANKS BUT NO EXHAUST GAS COMES OUT .................................................40-1002
S-3 FUEL IS BEING INJECTED BUT ENGINE DOES NOT START (MISFIRING: ENGINE CRANKS
BUT DOES NOT START) ........................................................................................................40-1003
S-4 ENGINE IS HARD TO START ..............................................................................................40-1005
S-5 ENGINE DOES NOT PICK UP SMOOTHLY ........................................................................40-1007
S-6 ENGINE STOPS DURING OPERATION ..............................................................................40-1009
S-7 ENGINE RUNS ROUGH OR IS UNSTABLE ........................................................................40-1011
S-8 LOW ENGINE POWER ........................................................................................................40-1012
S-9 BLACK EXHAUST SMOKE ..................................................................................................40-1014
S-10 EXCESSIVE OIL CONSUMPTION .....................................................................................40-1016
S-11 EXCESSIVE OIL CONTAMINATION...................................................................................40-1017
S-12 EXCESSIVE FUEL CONSUMPTION..................................................................................40-1018
S-13 HIGH COOLANT PRESSURE OR OIL CONTAMINATION.................................................40-1019
S-14 RAPID OIL PRESSURE LOSS...........................................................................................40-1020
S-15 FUEL CONTAMINATION OF ENGINE OIL .........................................................................40-1022
S-16 OIL IS CONTAMINATED BY COOLANT.............................................................................40-1023
S-17 COOLANT TEMPERATURE RISES TOO HIGH (OVERHEATING) ....................................40-1024
S-18 ABNORMAL SOUND FROM MACHINE .............................................................................40-1025
00 INDEX AND FOREWORD INDEX
PC170LC-11 00-13

S-19 EXCESSIVE VIBRATION ...................................................................................................40-1026
S-20 EXCESSIVE AIR IN FUEL SYSTEM ..................................................................................40-1027
S-21 ACTIVE REGENERATION IS TOO FREQUENT ................................................................40-1028
S-22 EXCESSIVE REGENERATION TIME.................................................................................40-1029
S-23 WHITE SMOKE DURING ACTIVE REGENERATION ........................................................40-1030
S-24 EXCESSIVE AdBlue/DEF CONSUMPTION .......................................................................40-1031
S-25 UNUSUAL AMMONIA SMELL............................................................................................40-1033
S-26 AdBlue/DEF IS CONTAMINATED.......................................................................................40-1034
50 DISASSEMBLY AND ASSEMBLY............................................................................................................. 50-1
CONTENTS ............................................................................................................................................ 50-2
ABBREVIATION LIST ............................................................................................................................. 50-6
RELATED INFORMATION ON DISASSEMBLY AND ASSEMBLY .........................................................50-11
HOW TO READ THIS MANUAL......................................................................................................50-11
COATING MATERIALS LIST.......................................................................................................... 50-13
SPECIAL TOOLS LIST .................................................................................................................. 50-18
SKETCHES OF SPECIAL TOOLS................................................................................................. 50-31
ENGINE AND COOLING SYSTEM....................................................................................................... 50-39
REMOVE AND INSTALL SUPPLY PUMP ASSEMBLY .................................................................. 50-39
REMOVE AND INSTALL INJECTOR ASSEMBLY ......................................................................... 50-47
REMOVE AND INSTALL CYLINDER HEAD ASSEMBLY .............................................................. 50-56
REMOVE AND INSTALL EGR VALVE ASSEMBLY........................................................................ 50-82
REMOVE AND INSTALL EGR COOLER ASSEMBLY.................................................................... 50-85
REMOVE AND INSTALL STARTER ASSEMBLY........................................................................... 50-90
REMOVE AND INSTALL ALTERNATOR BELT .............................................................................. 50-95
REMOVE AND INSTALL RADIATOR ASSEMBLY ........................................................................50-100
REMOVE AND INSTALL HYDRAULIC OIL COOLER ASSEMBLY ...............................................50-108
REMOVE AND INSTALL AFTERCOOLER ASSEMBLY................................................................50-116
REMOVE AND INSTALL FAN CLUTCH ASSEMBLY....................................................................50-121
REMOVE AND INSTALL FAN .......................................................................................................50-129
REMOVE AND INSTALL ENGINE AND MAIN PUMP ASSEMBLY ...............................................50-130
REMOVE AND INSTALL ENGINE FRONT OIL SEAL ..................................................................50-160
REMOVE AND INSTALL ENGINE REAR OIL SEAL.....................................................................50-169
REMOVE AND INSTALL FUEL COOLER ASSEMBLY .................................................................50-173
REMOVE AND INSTALL ENGINE HOOD ASSEMBLY .................................................................50-178
REMOVE AND INSTALL KDOC ASSEMBLY................................................................................50-186
REMOVE AND INSTALL KDOC AND SCR ASSEMBLY ...............................................................50-191
REMOVE AND INSTALL FUEL TANK ASSEMBLY .......................................................................50-204
REMOVE AND INSTALL AdBlue/DEF TANK ASSEMBLY ............................................................50-215
REMOVE AND INSTALL AdBlue/DEF TANK SENSOR FLANGE ASSEMBLY..............................50-228
REMOVE AND INSTALL AdBlue/DEF TANK SENSOR ................................................................50-231
REMOVE AND INSTALL AdBlue/DEF TANK STRAINER .............................................................50-234
REMOVE AND INSTALL SCR ASSEMBLY...................................................................................50-235
REMOVE AND INSTALL KCCV ASSEMBLY ................................................................................50-239
REMOVE AND INSTALL AdBlue/DEF MIXING TUBE ..................................................................50-242
REMOVE AND INSTALL AdBlue/DEF INJECTOR........................................................................50-255
REMOVE AND INSTALL AdBlue/DEF PUMP ...............................................................................50-261
REMOVE AND INSTALL AdBlue/DEF HOSE ...............................................................................50-267
REMOVE AND INSTALL AIR CLEANER ASSEMBLY...................................................................50-287
REMOVE AND INSTALL AIR CONDITIONER COMPRESSOR ASSEMBLY ................................50-291
REMOVE AND INSTALL AIR CONDITIONER CONDENSER ASSEMBLY ...................................50-295
POWER TRAIN....................................................................................................................................50-298
REMOVE AND INSTALL TRAVEL MOTOR AND FINAL DRIVE ASSEMBLY ...............................50-298
DISASSEMBLE AND ASSEMBLE FINAL DRIVE ASSEMBLY......................................................50-300
REMOVE AND INSTALL SWING MOTOR AND SWING MACHINERY ASSEMBLY.....................50-312
DISASSEMBLE AND ASSEMBLE SWING MACHINERY ASSEMBLY .........................................50-317
REMOVE AND INSTALL SWING CIRCLE ASSEMBLY ................................................................50-328
UNDERCARRIAGE AND FRAME........................................................................................................50-330
SEPARATION AND CONNECTION OF TRACK ASSEMBLY........................................................50-330
INDEX 00 INDEX AND FOREWORD
00-14 PC170LC-11

REMOVE AND INSTALL SPROCKET ..........................................................................................50-334
REMOVE AND INSTALL IDLER AND IDLER CUSHION ASSEMBLY...........................................50-336
DISASSEMBLE AND ASSEMBLE IDLER ASSEMBLY .................................................................50-338
DISASSEMBLE AND ASSEMBLE OF IDLER CUSHION ASSEMBLY ..........................................50-343
DISASSEMBLE AND ASSEMBLE TRACK ROLLER ASSEMBLY ................................................50-346
DISASSEMBLEAND ASSEMBLE CARRIER ROLLER ASSEMBLY .............................................50-350
REMOVE AND INSTALL REVOLVING FRAME ASSEMBLY ........................................................50-354
REMOVE AND INSTALL COUNTERWEIGHT ASSEMBLY...........................................................50-360
HYDRAULIC SYSTEM.........................................................................................................................50-364
REMOVE AND INSTALL CENTER SWIVEL JOINT ASSEMBLY ..................................................50-364
DISASSEMBLE AND ASSEMBLE CENTER SWIVEL JOINT ASSEMBLY ...................................50-370
REMOVE AND INSTALL HYDRAULIC TANK ASSEMBLY............................................................50-373
REMOVE AND INSTALL MAIN PUMP ASSEMBLY ......................................................................50-388
REMOVE AND INSTALL CONTROL VALVE ASSEMBLY .............................................................50-393
DISASSEMBLE AND ASSEMBLE CONTROL VALVE ASSEMBLY ..............................................50-400
DISASSEMBLE AND ASSEMBLE WORK EQUIPMENT PPC VALVE ASSEMBLY ......................50-405
WORK EQUIPMENT............................................................................................................................50-408
REMOVE AND INSTALL WORK EQUIPMENT ASSEMBLY .........................................................50-408
DISASSEMBLE AND ASSEMBLE WORK EQUIPMENT CYLINDER ASSEMBLY........................50-414
CAB AND ITS ATTACHMENTS ...........................................................................................................50-423
REMOVE AND INSTALL OPERATOR'S CAB ASSEMBLY ...........................................................50-423
REMOVE AND INSTALL OPERATOR CAB GLASS (ADHERED GLASS) ....................................50-438
REMOVE AND INSTALL FRONT WINDOW ASSEMBLY .............................................................50-450
REMOVE AND INSTALL FLOOR FRAME ASSEMBLY.................................................................50-459
REMOVE AND INSTALL AIR CONDITIONER UNIT ASSEMBLY .................................................50-468
REMOVE AND INSTALL OPERATOR'S SEAT .............................................................................50-478
REMOVE AND INSTALL SEAT BELT ...........................................................................................50-483
REMOVE AND INSTALL FRONT WIPER ASSEMBLY .................................................................50-485
ELECTRICAL SYSTEM .......................................................................................................................50-498
REMOVE AND INSTALL ENGINE CONTROLLER ASSEMBLY ...................................................50-498
REMOVE AND INSTALL PUMP CONTROLLER ASSEMBLY.......................................................50-503
REMOVE AND INSTALL MACHINE MONITOR ASSEMBLY ........................................................50-509
REMOVE AND INSTALL PUMP SWASH PLATE SENSOR ..........................................................50-515
REMOVE AND INSTALL MASS AIR FLOW AND TEMPERATURE SENSOR ..............................50-517
REMOVE AND INSTALL KCCV CRANKCASE PRESSURE SENSOR.........................................50-520
REMOVE AND INSTALL SCR TEMPERATURE SENSOR ...........................................................50-523
REMOVE AND INSTALL KOMTRAX TERMINAL ASSEMBLY......................................................50-526
60 MAINTENANCE STANDARD.................................................................................................................... 60-1
CONTENTS ............................................................................................................................................ 60-2
ABBREVIATION LIST ............................................................................................................................. 60-3
ENGINE AND COOLING SYSTEM......................................................................................................... 60-8
MAINTENANCE STANDARD OF ENGINE MOUNT ........................................................................ 60-8
MAINTENANCE STANDARD OF COOLING SYSTEM .................................................................... 60-9
POWER TRAIN......................................................................................................................................60-11
MAINTENANCE STANDARD OF SWING CIRCLE .........................................................................60-11
MAINTENANCE STANDARD OF SWING MACHINERY................................................................ 60-12
MAINTENANCE STANDARD OF FINAL DRIVE ............................................................................ 60-14
MAINTENANCE STANDARD OF SPROCKET .............................................................................. 60-16
MAINTENANCE STANDARD OF SPROCKET TOOTH PROFILE FULL-SCALE DRAWING ......... 60-17
UNDERCARRIAGE AND FRAME......................................................................................................... 60-19
MAINTENANCE STANDARD OF TRACK FRAME AND IDLER CUSHION.................................... 60-19
MAINTENANCE STANDARD OF IDLER ....................................................................................... 60-21
MAINTENANCE STANDARD OF TRACK ROLLER....................................................................... 60-23
MAINTENANCE STANDARD OF CARRIER ROLLER ................................................................... 60-24
MAINTENANCE STANDARD OF TRACK SHOE ........................................................................... 60-25
MAINTENANCE STANDARD OF TRIPLE SHOE........................................................................... 60-28
HYDRAULIC SYSTEM.......................................................................................................................... 60-29
MAINTENANCE STANDARD OF HYDRAULIC TANK ................................................................... 60-29
00 INDEX AND FOREWORD INDEX
PC170LC-11 00-15

MAINTENANCE STANDARD OF MAIN PUMP .............................................................................. 60-30
MAINTENANCE STANDARD OF PC-EPC VALVE......................................................................... 60-32
MAINTENANCE STANDARD OF TRAVEL MOTOR ...................................................................... 60-33
MAINTENANCE STANDARD OF CONTROL VALVE..................................................................... 60-36
MAINTENANCE STANDARD OF WORK EQUIPMENT AND SWING PPC VALVE ....................... 60-47
MAINTENANCE STANDARD OF TRAVEL PPC VALVE ................................................................ 60-50
MAINTENANCE STANDARD OF 1ST-LINE ATTACHMENT PPC VALVE (WITH EPC VALVE)...... 60-53
MAINTENANCE STANDARD OF 2ND-LINE ATTACHMENT PPC VALVE ..................................... 60-56
MAINTENANCE STANDARD OF SOLENOID VALVE.................................................................... 60-58
MAINTENANCE STANDARD OF ATTACHMENT CIRCUIT SELECTOR VALVE (FOR HIGH PRES-
SURE) ........................................................................................................................................ 60-59
MAINTENANCE STANDARD OF ATTACHMENT CIRCUIT SELECTOR VALVE (FOR LOW PRES-
SURE) ........................................................................................................................................ 60-60
MAINTENANCE STANDARD OF CENTER SWIVEL JOINT .......................................................... 60-61
WORK EQUIPMENT............................................................................................................................. 60-62
MAINTENANCE STANDARD OF WORK EQUIPMENT LINKAGE................................................. 60-62
MAINTENANCE STANDARD OF BOOM CYLINDER .................................................................... 60-71
MAINTENANCE STANDARD OF ARM CYLINDER ....................................................................... 60-72
MAINTENANCE STANDARD OF BUCKET CYLINDER................................................................. 60-73
80 APPENDIX................................................................................................................................................ 80-1
CONTENTS ............................................................................................................................................ 80-2
ABBREVIATION LIST ............................................................................................................................. 80-4
AIR CONDITIONER SYSTEM ................................................................................................................ 80-9
PRECAUTIONS FOR REFRIGERANT ............................................................................................ 80-9
AIR CONDITIONER COMPONENT ............................................................................................... 80-10
SPECIFICATIONS OF AIR CONDITIONER ................................................................................... 80-12
CONFIGURATION AND FUNCTION OF REFRIGERATION CYCLE ............................................. 80-13
OUTLINE OF REFRIGERATION CYCLE ....................................................................................... 80-14
COMPONENT PARTS OF AIR CONDITIONER SYSTEM .................................................................... 80-16
AIR CONDITIONER UNIT.............................................................................................................. 80-16
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)......................................................................................................... 80-41
METHOD FOR TESTING AIR LEAKAGE (DUCT) ......................................................................... 80-41
TESTING AIR CONDITIONER USING SELF-DIAGNOSIS FUNCTION................................................ 80-43
HOW TO OPEN THE ELECTRICAL SYSTEM ABNORMALITY RECORD SCREEN IN SERVICE MODE
OF THE MACHINE MONITOR .......................................................................................................... 80-44
TEST VENT (MODE) CHANGEOVER .................................................................................................. 80-45
METHOD FOR TESTING VENT (MODE) CHANGEOVER ............................................................ 80-45
TESTING FRESH/RECIRC AIR CHANGEOVER.................................................................................. 80-47
METHOD FOR TESTING FRESH/RECIRC AIR CHANGEOVER .................................................. 80-47
TEST SUNLIGHT SENSOR.................................................................................................................. 80-48
METHOD FOR TESTING SUNLIGHT SENSOR............................................................................ 80-48
TEST (DUAL) PRESSURE SWITCH FOR REFRIGERANT.................................................................. 80-49
METHOD FOR TESTING (DUAL) PRESSURE SWITCH FOR REFRIGERANT............................ 80-49
TEST RELAYS...................................................................................................................................... 80-50
METHOD FOR TESTING RELAYS ................................................................................................ 80-50
AIR CONDITIONER TROUBLESHOOTING CHART 1 ......................................................................... 80-51
INDEX 00 INDEX AND FOREWORD
00-16 PC170LC-11

AIR CONDITIONER TROUBLESHOOTING CHART 2 ......................................................................... 80-52
INFORMATION DESCRIBED IN TROUBLESHOOTING TABLE........................................................... 80-55
FAILURE CODE [879AKA].................................................................................................................... 80-57
FAILURE CODE [879AKB].................................................................................................................... 80-58
FAILURE CODE [879BKA].................................................................................................................... 80-59
FAILURE CODE [879BKB].................................................................................................................... 80-61
FAILURE CODE [879CKA].................................................................................................................... 80-63
FAILURE CODE [879CKB].................................................................................................................... 80-64
FAILURE CODE [879DKZ].................................................................................................................... 80-65
FAILURE CODE [879EMC] ................................................................................................................... 80-67
FAILURE CODE [879FMC] ................................................................................................................... 80-68
FAILURE CODE [879GKX] ................................................................................................................... 80-69
A-1 TROUBLESHOOTING FOR POWER SUPPLY SYSTEM (AIR CONDITIONER DOES NOT OPERATE).
.......................................................................................................................................................... 80-71
A-2 TROUBLESHOOTING FOR COMPRESSOR AND REFRIGERANT SYSTEM (AIR IS NOT COOLED)...
.......................................................................................................................................................... 80-73
A-3 TROUBLESHOOTING FOR BLOWER MOTOR SYSTEM (NO AIR COMES OUT OR AIR FLOW IS
ABNORMAL) ..................................................................................................................................... 80-76
A-4 TROUBLESHOOTING FOR FRESH/RECIRC AIR CHANGEOVER............................................... 80-78
TROUBLESHOOTING USING GAUGE PRESSURE............................................................................ 80-80
CONNECTION OF SERVICE TOOL ..................................................................................................... 80-83
METHOD FOR CONNECTING SERVICE TOOL ........................................................................... 80-83
PRECAUTIONS FOR DISCONNECTING AND CONNECTING HOSES AND TUBES IN AIR CONDITION-
ER PIPINGS...................................................................................................................................... 80-85
HANDLE COMPRESSOR OIL .............................................................................................................. 80-87
METHOD FOR REPLACING DESICCANT ........................................................................................... 80-89
90 CIRCUIT DIAGRAMS ............................................................................................................................... 90-1
CONTENTS ............................................................................................................................................ 90-2
ABBREVIATION LIST ............................................................................................................................. 90-3
HYDRAULIC CIRCUIT DIAGRAM .......................................................................................................... 90-8
SYMBOLS USED IN HYDRAULIC CIRCUIT DIAGRAM .................................................................. 90-8
HYDRAULIC CIRCUIT DIAGRAM ................................................................................................. 90-13
ELECTRICAL CIRCUIT DIAGRAM ....................................................................................................... 90-15
SYMBOLS USED IN ELECTRICAL CIRCUIT DIAGRAM............................................................... 90-15
ELECTRICAL CIRCUIT DIAGRAM (1/6)........................................................................................ 90-19
ELECTRICAL CIRCUIT DIAGRAM (2/6)........................................................................................ 90-21
ELECTRICAL CIRCUIT DIAGRAM (3/6)........................................................................................ 90-23
ELECTRICAL CIRCUIT DIAGRAM (4/6)........................................................................................ 90-25
ELECTRICAL CIRCUIT DIAGRAM (5/6)........................................................................................ 90-27
ELECTRICAL CIRCUIT DIAGRAM (6/6)........................................................................................ 90-29
ELECTRICAL CIRCUIT DIAGRAM (1/8)........................................................................................ 90-31
ELECTRICAL CIRCUIT DIAGRAM (2/8)........................................................................................ 90-33
ELECTRICAL CIRCUIT DIAGRAM (3/8)........................................................................................ 90-35
ELECTRICAL CIRCUIT DIAGRAM (4/8)........................................................................................ 90-37
ELECTRICAL CIRCUIT DIAGRAM (5/8)........................................................................................ 90-39
ELECTRICAL CIRCUIT DIAGRAM (6/8)........................................................................................ 90-41
ELECTRICAL CIRCUIT DIAGRAM (7/8)........................................................................................ 90-43
ELECTRICAL CIRCUIT DIAGRAM (8/8)........................................................................................ 90-45
INDEX..................................................................................................................................................................1
00 INDEX AND FOREWORD INDEX
PC170LC-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 PC170LC-11