Komatsu D71EXi-24 D71EXi-24E0 D71PXi-24 D71PXi-24E0 Bulldozer Shop Manual SEN06842-09 PDF

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Komatsu D71EXi-24 D71EXi-24E0 D71PXi-24 D71PXi-24E0 Bulldozer Shop Manual SEN06842-09 – PDF DOWNLOAD

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Komatsu D71EXi-24 D71EXi-24E0 D71PXi-24 D71PXi-24E0 Bulldozer Shop Manual SEN06842-09 – PDF DOWNLOAD 

Language : English
Pages : 3736
Downloadable : Yes
File Type : PDF

TABLE OF CONTENTS:

Komatsu D71EXi-24 D71EXi-24E0 D71PXi-24 D71PXi-24E0 Bulldozer Shop Manual SEN06842-09 – PDF DOWNLOAD 

SERIAL NUMBERS

D71EXi-70002and up
D71PXi-70002 and up

Cover 1
00 Index and Foreword 3
Index 4
Foreword, Safety, Basic Information 25
How to Read the Shop Manual 25
Safety Notice for Operation 27
Precautions to Prevent Fire 35
Procedures If Fire Occurs 37
Precautions for Disposing of Waste Materials 38
Procedures for Exhaust Gas Regulations 39
Precautions for DEF 40
General Character and Precautions for Handling 40
Precautions for Adding 40
Precautions for Storage 40
Precautions for Fire Hazard and Leakage 40
Other Precautions 40
Store DEF 41
Precautions When You Handle Hydraulic Equipment 42
Precautions When You Disconnect and Connect Pipings 45
Precautions When You Handle Electrical Equipment 52
Precautions When You Handle Fuel System Equipment 54
Precautions When You Handle Intake System Equipment 55
Practical Use of KOMTRAX 56
Disconnect and Connect Push-Pull Type Coupler 57
How to Disconnect and Connect Type 1 Push-Pull Type Coupler 57
How to Disconnect and Connect Type 2 Push-Pull Type Coupler 58
How to Disconnect and Connect Type 3 Push-Pull Type Coupler 59
Precautions for Disconnection and Connection of Connectors 61
How to Disconnect and Connect Deutsch Connector 65
How to Disconnect and Connect Slide Lock Type Connector 66
How to Disconnect and Connect Connector with Lock to Pull 68
How to Disconnect and Connect Connector with Lock to Push 69
How to Disconnect and Connect Connector with Housing to Rotate 71
How to Read the Codes for Electric Cable 72
Explanation of Terms for Maintenance Standard 76
Standard Tightening Torque Table 79
Conversion Table 86
Abbreviation List 91
01 Specifications 95
Table of Contents 96
Specifications 97
Specification Drawing 97
Specification Drawing: D71EXI-24, D71EXI-24E0 97
Specification Drawing: D71PXI-24, D71PXI-24E0 99
Specification Drawing: D71PXI-24, D71PXI-24E0 (Wide Gauge Specification) 101
Specifications 103
Specifications: D71EXI-24, D71EXI-24E0 103
Specifications: D71PXI-24, D71PXI-24E0 109
Specifications: D71PXI-24, D71PXI-24E0 (Wide Gauge Specification) 114
Weight Table 119
Weight Table: D71EXI-24, D71EXI-24E0 119
Weight Table: D71PXI-24, D71PXI-24E0 121
Weight Table: D71PXI-24, D71PXI-24E0 (Wide Gauge Specification) 123
Fuel, Coolant, Lubricants (For North America) 125
How to Use Fuel, Coolant and Lubricants by Ambient Temperature 125
Fuel, Coolant, Lubricants (For European Union) 127
How to Use Fuel, Coolant and Lubricants by Ambient Temperature 127
10 Structure and Function 129
Table of Contents 130
Urea SCR System 134
Layout Drawing of Urea SCR System 134
Urea SCR System Diagram 136
Function of Urea SCR System 137
Function of DEF System (Applicable Machine: 70002 to 70281) 137
Function of DEF System (Applicable Machine: 70282 and Up) 139
Inducement Strategy 141
Component Parts of Urea SCR System 155
DEF Mixing Tube 155
SCR Assembly 156
DEF Tank 158
DEF Pump 160
DEF Injector 161
DEF Hose 162
DEF Tank Heating Valve 163
Boot-up System 164
Layout Drawing of Boot-up System 164
System Operating Lamp System 165
System Diagram of System Operating Lamp System 165
Function of System Operating Lamp System (Applicable Machine: 70002 to 70281) 165
Function of System Operating Lamp System (Applicable Machine: 70282 and Up) 166
Battery Disconnect Switch 168
Function of Battery Disconnect Switch (Applicable Machine: 70002 to 70281) 168
Function of Battery Disconnect Switch (Applicable Machine: 70282 and Up) 168
Operation of Battery Disconnect Switch 168
Assistance Valve for Startup 170
Structure of Assistance Valve for Startup 170
Function of Assistance Valve for Startup 170
Engine System 171
Layout Drawing of Engine System 171
Engine Control System 173
Layout Drawing of Engine Control System 173
System Diagram of Engine Control 175
Function of Engine Control System 176
Engine Automatic Warm-up System 178
Function of Engine Automatic Warm-up System 178
Automatic Idle Stop System 179
System Diagram of Automatic Idle Stop System 179
Function of Automatic Idle Stop System 179
Component Parts of Engine System 182
Damper 182
VGT 183
EGR System 187
EGR Valve 189
EGR Cooler 191
KCCV System 193
KCCV Ventilator 195
KDPF 197
Cooling System 201
Layout Drawing of Cooling System 201
Specifications of Cooling System 202
Cooling Fan Control System 203
System Diagram of Cooling Fan Control System 203
Function of Cooling Fan Control System 203
Component Parts of Cooling System 205
Cooling Fan Motor 205
Hydraulic Oil Cooler Bypass and HST Charge Safety Valve 211
Hydraulic Oil Cooler Bypass Valve 213
HST Charge Safety Valve 214
Control System 216
Layout Drawing of Control System 216
Machine Monitor System 217
System Diagram of Machine Monitor System 217
Function of Machine Monitor System 217
KOMTRAX System 219
System Diagram of KOMTRAX System 219
Function of KOMTRAX System 219
Component Parts of Control System 220
Machine Monitor 220
Gateway Function Controller 239
Communication Terminal 242
HST Controller 244
Work Equipment Controller 248
Engine Controller 252
Fuel Control Dial 259
Deceleration and Brake Potentiometer 261
Hydraulic System 263
Layout Drawing of Hydraulic System 263
CLSS 264
Structure of CLSS 264
Function of CLSS 265
Component Parts of Hydraulic System 268
Hydraulic Tank 268
Work Equipment and Cooling Fan Pump 270
LS Valve 275
PC Valve 281
LS-EPC Valve 285
Control Valve 288
Power Train System 305
Layout Drawing of HST System 305
Operation of HST System 306
Steering and Brake Control System 308
Layout Drawing of Steering and Brake Control System 308
Function of Steering and Brake Control System 308
HST Control System 310
System Diagram of HST Control System 310
Gear Shift Control Function 311
Engine Low Speed Matching Control Function 315
HST Pump and Motor Sequence Control Function 315
Deceleration and Brake Control Function 317
Gear Shift Control Function by Load 318
Turn Control Function 318
Straight Travel Correction Control Function 320
Parking Brake Control System 321
System Diagram of Parking Brake Control System (Applicable Machine: 70002 to 72160) 321
System Diagram of Parking Brake Control System (Applicable Machine: 72161 and Up) 322
Function of Parking Brake Control System 322
Operation of Parking Brake Control System 323
Component Parts of Power Train System 325
HST Pump 325
HST Charge Pump 339
HST Motor 347
Final Drive 360
Electric Steering Electric Lever 364
Work Equipment System 367
Work Equipment Control 367
Layout Drawing of Work Equipment Control 367
Function of Work Equipment Control 367
Layout Drawing of Front Work Equipment 369
Layout Drawing of Fixed Multi-Shank Ripper 370
Component Parts of Work Equipment System 371
5-Spool EPC and Solenoid Valve 372
Pilot Circuit Accumulator 378
Angle Control EPC Valve 379
Quick Drop Valve 382
Piston Valve 387
Electric Blade Control Lever 388
Ripper Electric Lever 390
ICT System 392
Layout Drawing of ICT System 392
System Diagram of ICT Control System 394
Blade Control System 396
Function of Blade Control System 396
Simple Grading Mode System Diagram 398
Function of Simple Grading Mode 399
Operation of Simple Grading Mode 399
Assist Control System 401
Assist Control System Diagram 401
Function of Assist Control System 401
Operation of Assist Control System 402
Back Grade Mode System 403
Back Grade Mode System Diagram 403
Function of Back Grade Mode System 404
Operation of Back Grade Mode System 404
Cut Control System 405
Cut Control System Diagram 405
Function of Cut Control System 406
Operation of Cut Control System 406
Smooth Start System 418
Smooth Start System Diagram 418
Function of Smooth Start System 418
Operation of Smooth Start System 419
Slip Control System 420
Slip Control System Diagram 420
Function of Slip Control System 421
Operation of Slip Control System 421
Speed Control System 422
Speed Control System Diagram 422
Function of Speed Control System 422
Operation of Speed Control System 422
Straight Travel Correction System 424
Straight Travel Correction System Diagram 424
Function of Straight Travel Correction System 425
Operation of Straight Travel Correction System 425
Quick Surface Control System 428
Quick Surface Control System Diagram 428
Function of Quick Surface Control System 428
Operation of Quick Surface Control System 429
System of Triangulated Surface from AS-BUILT 430
System Diagram of Triangulated Surface from AS-BUILT 430
Function of System of Triangulated Surface from AS-BUILT 430
Operation of System of Triangulated Surface from AS-BUILT 430
2 Surfaces Selection Control System 432
2 Surfaces Selection Control System Diagram 432
Function of 2 Surfaces Selection Control System 433
Operation of 2 Surfaces Selection Control System 433
Lift Layer Control System 434
Lift Layer Control System Diagram 434
Function of Lift Layer Control System 435
Operation of Lift Layer Control System 435
HST Speed Range Control System 436
HST Speed Range Control System Diagram 436
Function of HST Speed Range Control System 436
Operation of HST Speed Range Control System 436
2D Laser Machine Control System 438
System Diagram of 2D Laser Machine Control System 438
Function of 2D Laser Machine Control System 439
Operation of 2D Laser Machine Control System 439
Component Parts of ICT System 440
Work Equipment Controller 440
Control Box 444
GNSS Receiver 446
GNSS Antenna 448
IMU Sensor 449
GNSS External Radio Device 452
Navigation Controller 454
Stroke and Reset Sensor for Blade Lift Cylinder 459
Stroke Sensor for Blade Tilt Cylinder 462
Stroke Sensor for Blade Angle Cylinder 464
Undercarriage and Frame 466
Main Frame 466
Structure of Main Frame 466
Suspension 467
Structure of Suspension 467
Specifications of Suspension 468
Function of Suspension 469
Track Frame and Idler Cushion 470
Structure of Track Frame and Idler Cushion 470
Function of Track Frame and Idler Cushion 472
Work Equipment 473
Structure of Front Work Equipment 473
Structure of Fixed Multi-Shank Ripper 474
CAB Related Parts 475
ROPS CAB 475
Structure of ROPS CAB 475
Function of ROPS CAB 476
CAB Mount 477
Structure of CAB Mount 477
Function of CAB Mount 477
20 Standard Value Table 479
Table of Contents 480
Standard Value Table for Engine 481
Standard Value Table for Engine: D71EXI-24 481
Standard Value Table for Engine: D71EXI-24E0 485
Standard Value Table for Engine: D71PXI-24 489
Standard Value Table for Engine: D71PXI-24E0 493
Standard Value Table for Machine 497
Standard Value Table for Machine: D71EXI-24 497
Standard Value Table for Machine: D71EXI-24E0 512
Standard Value Table for Machine: D71PXI-24 527
Standard Value Table for Machine: D71PXI-24E0 542
Machine Posture and Procedures to Measure Performance 557
30 Testing and Adjusting 559
Table of Contents 560
Precautions Before Work 564
Related Information on Testing and Adjusting 565
Differences In Machine Monitor Symbols 565
Tools for Testing and Adjusting 566
Sketch of Tools for Testing and Adjusting 575
Engine and Cooling System 580
Examine Engine Speed 580
How to Examine Engine Speed 580
Examine Boost Pressure 583
How to Examine Boost Pressure 583
Examine Exhaust Gas Temperature 585
How to Examine Exhaust Gas Temperature 585
Examine Exhaust Gas Color 588
How to Examine Exhaust Gas Color with the Handy Smoke Checker 588
How to Examine Exhaust Gas Color with Smoke Meter 590
Examine and Adjust Valve Clearance 592
How to Examine Valve Clearance 592
How to Adjust Valve Clearance 593
Examine Compression Pressure 595
How to Examine Compression Pressure 595
Examine Blowby Pressure 598
How to Examine Blowby Pressure 598
Examine Engine Oil Pressure 601
How to Examine Engine Oil Pressure 601
Examine EGR Valve and VGT Oil Pressure 603
How to Examine EGR Valve and VGT Oil Pressure 603
Examine Fuel Pressure 605
How to Examine Fuel Pressure 606
Examine Fuel Discharge, Return, and Leakage 614
How to Examine Fuel Discharge, Return, and Leakage 615
Bleed Air from Fuel System 620
How to Bleed Air from Fuel System 620
Examine Fuel Circuit for Leakage 623
How to Examine Fuel System for Leakage 623
Handle Cylinder Cut-out Mode Operation 625
Handle No-Injection Cranking Operation 626
Examine KDPF, SCR and Muffler Stack for Looseness and Damage 627
How to Examine KDPF, SCR and Muffler Stack for Looseness and Damage 627
Examine Installed Condition of Cylinder Heads and Manifolds 628
How to Examine Installed Condition of Cylinder Heads and Manifolds 628
Examine Engine Piping for Damage and Looseness 629
How to Examine Engine Piping for Damage and Looseness 629
Examine Alternator Belt 630
How to Examine Alternator Belt 630
Examine Automatic Tensioner 632
How to Examine Automatic Tensioner 632
Write Correction for Ash in Soot Accumulation to Engine Controller 634
How to Write Correction for Ash in Soot Accumulation to Engine Controller 634
Examine SCR Related Function 635
Examine DEF Pump Raised Pressure 639
Examine Injection Volume from DEF Injector 642
Examine DEF Line Heater Relay 1 647
Examine DEF Line Heater Relay 2 651
Examine DEF Pump Heater Relay 655
Examine DEF Tank Heater Valve 659
Examine SCR Denitration Efficiency 663
Clean DEF Tank 666
How to Clean DEF Tank 666
Clean DEF Tank Mounting Part 671
How to Clean DEF Tank Mounting Part 671
Clean DEF Pump 673
How to Clean DEF Pump 673
Power Train 679
Examine and Adjust HST Oil Pressure 679
How to Examine HST Oil Pressure 679
How to Adjust HST Oil Pressure 683
Bleed Air from HST Pump 686
How to Bleed Air from HST Pump 686
How to Bleed Air from Servo Valve of HST Pump 687
Examine Outlet Pressure of Solenoid Valve 689
How to Examine Outlet Pressure of Solenoid Valve 689
Examine Travel Deviation 696
How to Examine Travel Deviation 696
Examine Brake Performance Simply 698
How to Examine Brake Performance Simply 698
Examine and Adjust Deceleration/ Brake Pedal 699
How to Examine Deceleration/ Brake Pedal 699
How to Adjust Deceleration/ Brake Pedal 701
Move Machine When It Cannot Travel 703
How to Move Machine with Hydraulic Type Parking Brake Release System 703
How to Move Machine After You Remove Final Drive Shaft 706
Undercarriage and Frame 707
Examine and Adjust Idler Clearance 707
How to Adjust Idler Clearance 707
Examine Sprocket Wear 708
How to Examine Sprocket Wear 708
Examine and Adjust Track Tension 709
How to Examine Track Tension 709
How to Adjust Track Tension 709
Hydraulic System 710
Release Remained Pressure in Hydraulic Circuit 710
How to Release Remained Pressure in Hydraulic System 710
Examine and Adjust Work Equipment Circuit Oil Pressure 711
How to Examine Work Equipment Circuit Oil Pressure 711
How to Adjust Work Equipment Circuit Oil Pressure 713
Examine and Adjust Oil Pressure in Control Circuit 714
How to Examine Oil Pressure in Control Circuit 714
How to Adjust Oil Pressure in Control Circuit 716
Examine Outlet Pressure of EPC Solenoid Valve 717
How to Examine Outlet Pressure of EPC Solenoid Valve 717
Bleed Air from Work Equipment, Cooling Fan Pump, and Charge Pump 720
How to Bleed Air from Work Equipment, Cooling Fan Pump, and Charge Pump 720
Examine Cooling Fan Speed 722
How to Examine Cooling Fan Speed 722
Examine Cooling Fan Circuit Oil Pressure 723
How to Examine Cooling Fan Circuit Oil Pressure 723
Bleed Air in Cooling Fan Pump 725
How to Bleed Air in Cooling Fan Pump 725
Examine Parts Which Cause Hydraulic Drift of Work Equipment 726
How to Examine Parts Which Cause Hydraulic Drift of Blade Lift Cylinder 726
How to Examine the Parts Which Cause Hydraulic Drift of Blade Tilt Cylinder 726
How to Examine the Parts Which Cause Hydraulic Drift of Ripper Lift Cylinder 727
Examine Oil Leakage from Work Equipment Cylinder 728
How to Examine Internal Oil Leakage of Work Equipment Cylinder 728
Bleed Air from Work Equipment Cylinders 731
How to Bleed Air from Work Equipment Cylinder 731
Work Equipment 732
Shim Adjustment of Center Ball 732
How to Adjust Shim of Center Ball 732
Examine and Adjust Play of Blade Electric Lever 733
How to Examine Play of Blade Electric Lever 735
How to Adjust Play of Blade Electric Lever 735
How to Replace Universal Joint 736
CAB Related Parts 743
Examine and Adjust Operator Cab 743
How to Examine Operator Cab 743
How to Adjust Operator Cab 745
Electrical System 748
Set and Operate Machine Monitor 748
Operator Mode 752
Function to Show Technician Identification Status Screen 752
Function to Show Operator Identification Input Screen 752
Examine Function by LCD (Liquid Crystal Display) 753
Examine Function of Service Meter 753
How to Set Usage Limitation and Change Maintenance Password 753
Service Mode 756
How to Operate Service Mode 756
How to See Pre-defined Monitoring Information 757
How to Examine Monitoring Information 772
Abnormality Record Menu 793
How to See Maintenance Record 797
Maintenance Mode Setting 798
How to Set Phone Number Entry 802
Default Setting Menu 803
Testing Menu 812
Adjustment Menu 821
No-Injection Cranking Operation 893
KOMTRAX Settings Menu 895
How to Show Service Message 897
How to Start Up KOMTRAX System 899
Adjust After Replacement of HST Controller 906
How to Adjust After Replacement of HST Controller 906
Adjust After Replacement of Electric and Hydraulic Equipment 911
Adjust Rearview Camera Angle 913
How to Adjust Rearview Camera Angle 913
Set Region of Bluetooth(R) Compatible Radio 914
How to Set Region of Bluetooth(R) Compatible Radio 914
Handle Voltage Circuit of Engine Controller 916
Handle Battery Disconnect Switch 917
Examine Diodes 918
How to Examine Diodes by Digital Tester 918
How to Examine Diodes by Analog Tester 918
ICT System 919
Examine and Adjust ICT Related Devices 919
Set and Operate Control Box 921
Machine Calibration 922
Calibrate IMU Sensor 924
How to Operate Machine Calibration Step A 929
How to Operate Machine Calibration Step B 935
Calibrate GNSS Antenna (AUX) Location 942
How to Operate Pitch Rod Calibration 944
How to Input Wear Volume of Blade Edge and Track Shoes 946
Reset Cylinder Stroke End 947
Reset Lift Cylinder Stroke End 947
Reset Tilt Cylinder Stroke End 948
Reset Angle Cylinder Stroke End 948
How to Operate Manual Machine Calibration 949
Examine and Adjust Blade Elevation 951
Examine Blade Elevation 951
Adjust Blade Elevation 951
Examine Stroke Sensor for Lift Cylinder 954
How to Examine Stroke Sensor for Lift Cylinder 954
Examine Stroke Sensor for Tilt Cylinder 956
How to Examine Stroke Sensor for Tilt Cylinder 956
Examine Stroke Sensor for Angle Cylinder 958
How to Examine Stroke Sensor for Angle Cylinder 958
Examine and Adjust Reset Sensor for Lift Cylinder 960
How to Examine Reset Sensor for Lift Cylinder 960
How to Adjust Reset Sensor for Lift Cylinder 960
Adjust When Work Equipment Controller is Replaced 961
How to Adjust When Work Equipment Controller is Replaced 961
Adjust After Replacement of IMU Sensor 964
How to Adjust After Replacement of IMU Sensor 964
How to Adjust When ICT Related Devices are Repaired or Replaced 965
Pm Clinic 967
Pm Clinic Service 967
Pm Clinic Check Sheet: D71EXI-24 969
Pm Clinic Check Sheet: D71EXI-24E0 977
Pm Clinic Check Sheet: D71PXI-24 985
Pm Clinic Check Sheet: D71PXI-24E0 992
Pm Clinic Check Sheet for Undercarriage: D71EXI-24 999
Pm Clinic Check Sheet for Undercarriage: D71EXI-24E0 1003
Pm Clinic Check Sheet for Undercarriage: D71PXI-24 1007
Pm Clinic Check Sheet for Undercarriage: D71PXI-24E0 1011
40 Troubleshooting 1015
Table of Contents 1016
Precautions Before Work 1029
Related Information to Troubleshooting 1030
General Troubleshooting Points 1030
Troubleshooting Points for Urea SCR System 1031
Sequence of Events in Troubleshooting 1045
Checks Before Troubleshooting 1047
Inspection Procedure Before Troubleshooting 1049
Walk-Around Check 1049
Test in Accordance with Testing Procedure 1051
Examine Fuel Level and Type 1051
Examine for Impure Ingredient in Fuel 1051
Examine DEF Level and Type 1052
Examine Fuel Prefilter 1052
Examine Fuel Main Filter 1054
Examine Engine Oil Level (Oil Quantity in Oil Pan) and Type 1055
Examine Coolant Level (Expansion Tank) 1056
Examine Air Cleaner Clogging 1057
Clean Outer Element 1058
Replace Element 1060
Examine Hydraulic Oil Level 1061
Examine Hydraulic Oil Strainer 1062
Examine Hydraulic Oil Filter 1065
Examine Oil Level in Final Drive Case 1067
Bleed Air from Fuel System 1067
Bleed Air from Hydraulic System 1067
How to Examine Electric Equipment 1067
How to Connect Adapter for Troubleshooting Controller 1074
How to Connect Adapter for Troubleshooting Machine Monitor 1074
How to Connect Adapter for Troubleshooting HST Controller 1074
How to Connect Adapter for Troubleshooting Work Equipment Controller 1075
How to Connect Adapter for Troubleshooting Gateway Function Controller 1075
How to Connect Adapter for Troubleshooting Engine Controller 1076
How to Connect Connectors for Engine Related Parts 1077
Procedure for Troubleshooting 1081
Information Shown in Troubleshooting Table 1083
How to Diagnose Open Circuit of Hydraulic Pressure Sensor System Wiring Harness 1085
Connectors List 1088
Connector Layout 1098
Connector Contact Connection Table 1108
T-Branch Box and T-Branch Adapter Table 1155
Fuse Location Table 1161
Precautions When You Clean and Replace KDPF (KCSF and KDOC) 1165
Prepare Short Circuit Electrical Connector (For Failure Codes [CA1883] and [CA3135]) 1169
Failure Code Table 1171
Troubleshooting by Failure Code (Display of Code) 1195
Failure Code [6091NX] 1195
Failure Code [989L00] 1197
Failure Code [989M00] 1198
Failure Code [989N00] 1199
Failure Code [A1U0N3] 1200
Failure Code [A1U0N4] 1202
Failure Code [A900FR] 1204
Failure Code [A900N6] 1205
Failure Code [A900NY] 1206
Failure Code [AA10NX] 1207
Failure Code [AB00KE] 1209
Failure Code [AQ10N3] 1211
Failure Code [AS00N3] 1213
Failure Code [AS00R2] 1215
Failure Code [AS00R3] 1216
Failure Code [AS00R4] 1217
Failure Code [AS00R5] 1218
Failure Code [AS00R6] 1219
Failure Code [AS00ZK] 1220
Failure Code [AS10KM] 1221
Failure Code [AS10NR] 1222
Failure Code [AS10NT] 1223
Failure Code [B@BAZG] 1224
Failure Code [B@BCNS] 1225
Failure Code [B@BCQA] 1226
Failure Code [B@BCZK] 1228
Failure Code [B@CRNS] 1230
Failure Code [B@CRZG] 1231
Failure Code [CA115] 1232
Failure Code [CA122] 1233
Failure Code [CA123] 1236
Failure Code [CA131] 1239
Failure Code [CA132] 1241
Failure Code [CA144] 1243
Failure Code [CA145] 1246
Failure Code [CA153] 1248
Failure Code [CA154] 1251
Failure Code [CA187] 1254
Failure Code [CA221] 1256
Failure Code [CA222] 1258
Failure Code [CA227] 1260
Failure Code [CA234] 1261
Failure Code [CA238] 1262
Failure Code [CA239] 1264
Failure Code [CA249] 1266
Failure Code [CA256] 1268
Failure Code [CA271] 1270
Failure Code [CA272] 1272
Failure Code [CA281] 1274
Failure Code [CA322] 1275
Failure Code [CA323] 1277
Failure Code [CA324] 1279
Failure Code [CA325] 1281
Failure Code [CA331] 1283
Failure Code [CA332] 1285
Failure Code [CA343] 1287
Failure Code [CA351] 1288
Failure Code [CA352] 1289
Failure Code [CA356] 1292
Failure Code [CA357] 1294
Failure Code [CA386] 1296
Failure Code [CA428] 1297
Failure Code [CA429] 1299
Failure Code [CA435] 1301
Failure Code [CA441] 1303
Failure Code [CA442] 1306
Failure Code [CA449] 1307
Failure Code [CA451] 1311
Failure Code [CA452] 1314
Failure Code [CA515] 1316
Failure Code [CA516] 1318
Failure Code [CA553] 1320
Failure Code [CA555] 1321
Failure Code [CA556] 1322
Failure Code [CA559] 1323
Failure Code [CA595] 1327
Failure Code [CA687] 1328
Failure Code [CA689] 1330
Failure Code [CA691] 1335
Failure Code [CA692] 1337
Failure Code [CA697] 1339
Failure Code [CA698] 1340
Failure Code [CA731] 1341
Failure Code [CA778] 1343
Failure Code [CA1117] 1348
Failure Code [CA1664] 1349
Failure Code [CA1669] 1352
Failure Code [CA1673] 1353
Failure Code [CA1677] 1354
Failure Code [CA1678] 1355
Failure Code [CA1682] 1356
Failure Code [CA1683] 1361
Failure Code [CA1684] 1363
Failure Code [CA1686] 1365
Failure Code [CA1691] 1366
Failure Code [CA1694] 1369
Failure Code [CA1695] 1372
Failure Code [CA1696] 1373
Failure Code [CA1712] 1375
Failure Code [CA1713] 1378
Failure Code [CA1714] 1380
Failure Code [CA1715] 1381
Failure Code [CA1776] 1382
Failure Code [CA1777] 1385
Failure Code [CA1843] 1388
Failure Code [CA1844] 1390
Failure Code [CA1879] 1393
Failure Code [CA1881] 1395
Failure Code [CA1883] 1397
Failure Code [CA1885] 1401
Failure Code [CA1887] 1403
Failure Code [CA1921] 1405
Failure Code [CA1922] 1408
Failure Code [CA1942] 1413
Failure Code [CA1993] 1414
Failure Code [CA2185] 1417
Failure Code [CA2186] 1418
Failure Code [CA2249] 1420
Failure Code [CA2265] 1421
Failure Code [CA2266] 1423
Failure Code [CA2271] 1425
Failure Code [CA2272] 1428
Failure Code [CA2311] 1431
Failure Code [CA2349] 1432
Failure Code [CA2353] 1435
Failure Code [CA2357] 1437
Failure Code [CA2381] 1438
Failure Code [CA2382] 1441
Failure Code [CA2383] 1444
Failure Code [CA2386] 1447
Failure Code [CA2387] 1449
Failure Code [CA2555] 1450
Failure Code [CA2556] 1453
Failure Code [CA2637] 1456
Failure Code [CA2639] 1458
Failure Code [CA2771] 1461
Failure Code [CA2777] 1467
Failure Code [CA2976] 1470
Failure Code [CA3133] 1472
Failure Code [CA3134] 1474
Failure Code [CA3135] 1476
Failure Code [CA3142] 1480
Failure Code [CA3143] 1481
Failure Code [CA3144] 1482
Failure Code [CA3146] 1484
Failure Code [CA3147] 1485
Failure Code [CA3148] 1486
Failure Code [CA3151] 1488
Failure Code [CA3165] 1494
Failure Code [CA3229] 1496
Failure Code [CA3231] 1498
Failure Code [CA3232] 1500
Failure Code [CA3235] 1504
Failure Code [CA3239] 1506
Failure Code [CA3241] 1509
Failure Code [CA3242] 1512
Failure Code [CA3251] 1515
Failure Code [CA3253] 1517
Failure Code [CA3254] 1520
Failure Code [CA3255] 1523
Failure Code [CA3256] 1525
Failure Code [CA3311] 1527
Failure Code [CA3312] 1529
Failure Code [CA3313] 1532
Failure Code [CA3314] 1533
Failure Code [CA3315] 1534
Failure Code [CA3316] 1536
Failure Code [CA3317] 1537
Failure Code [CA3318] 1538
Failure Code [CA3319] 1540
Failure Code [CA3321] 1541
Failure Code [CA3322] 1543
Failure Code [CA3419] 1545
Failure Code [CA3421] 1547
Failure Code [CA3497] 1549
Failure Code [CA3498] 1550
Failure Code [CA3543] 1551
Failure Code [CA3545] 1556
Failure Code [CA3547] 1558
Failure Code [CA3558] 1559
Failure Code [CA3559] 1561
Failure Code [CA3562] 1563
Failure Code [CA3563] 1565
Failure Code [CA3567] 1568
Failure Code [CA3568] 1571
Failure Code [CA3571] 1577
Failure Code [CA3572] 1579
Failure Code [CA3574] 1581
Failure Code [CA3575] 1584
Failure Code [CA3577] 1586
Failure Code [CA3578] 1588
Failure Code [CA3582] 1590
Failure Code [CA3583] 1597
Failure Code [CA3596] 1599
Failure Code [CA3649] 1602
Failure Code [CA3681] 1604
Failure Code [CA3682] 1607
Failure Code [CA3713] 1609
Failure Code [CA3717] 1612
Failure Code [CA3718] 1613
Failure Code [CA3725] 1614
Failure Code [CA3741] 1617
Failure Code [CA3748] 1618
Failure Code [CA3751] 1620
Failure Code [CA3755] 1622
Failure Code [CA3866] 1624
Failure Code [CA3867] 1628
Failure Code [CA3868] 1631
Failure Code [CA3899] 1635
Failure Code [CA3911] 1637
Failure Code [CA3912] 1641
Failure Code [CA3932] 1643
Failure Code [CA3933] 1645
Failure Code [CA3934] 1647
Failure Code [CA3935] 1650
Failure Code [CA3936] 1652
Failure Code [CA4151] 1654
Failure Code [CA4152] 1658
Failure Code [CA4155] 1662
Failure Code [CA4156] 1665
Failure Code [CA4157] 1668
Failure Code [CA4158] 1670
Failure Code [CA4159] 1671
Failure Code [CA4161] 1672
Failure Code [CA4162] 1675
Failure Code [CA4163] 1678
Failure Code [CA4164] 1680
Failure Code [CA4165] 1682
Failure Code [CA4166] 1684
Failure Code [CA4168] 1686
Failure Code [CA4169] 1689
Failure Code [CA4171] 1691
Failure Code [CA4249] 1694
Failure Code [CA4251] 1696
Failure Code [CA4259] 1698
Failure Code [CA4261] 1701
Failure Code [CA4277] 1704
Failure Code [CA4281] 1708
Failure Code [CA4459] 1711
Failure Code [CA4461] 1714
Failure Code [CA4658] 1717
Failure Code [CA4731] 1721
Failure Code [CA4732] 1722
Failure Code [CA4739] 1723
Failure Code [CA4768] 1724
Failure Code [CA4769] 1726
Failure Code [CA4842] 1729
Failure Code [CA4952] 1733
Failure Code [CA5115] 1735
Failure Code [CA5179] 1738
Failure Code [CA5181] 1740
Failure Code [CA5383] 1742
Failure Code [D130KA] 1744
Failure Code [D130KB] 1747
Failure Code [D130KY] 1749
Failure Code [D19JKZ] 1751
Failure Code [D19UKA] 1754
Failure Code [D19UKB] 1756
Failure Code [D19UMC] 1758
Failure Code [D811MC] 1760
Failure Code [D862KA] 1761
Failure Code [D8ALKA] 1763
Failure Code [D8ALKB] 1765
Failure Code [D8AQKR] 1767
Failure Code [D8ARKR] 1769
Failure Code [D8G1KT] 1771
Failure Code [D8G6KT] 1772
Failure Code [DAF0MB] 1773
Failure Code [DAF0MC] 1774
Failure Code [DAF8KB] 1775
Failure Code [DAF9KQ] 1776
Failure Code [DAFGMC] 1777
Failure Code [DAFLKA] 1778
Failure Code [DAFLKB] 1780
Failure Code [DAFQKR] 1783
Failure Code [DAJ000] 1784
Failure Code [DAJ0KQ] 1785
Failure Code [DAJ0KT] 1786
Failure Code [DAJ0MC] 1787
Failure Code [DAJ1KK] 1788
Failure Code [DAJ2KK] 1790
Failure Code [DAJ2KT] 1792
Failure Code [DAJ5KK] 1793
Failure Code [DAJ6KK] 1796
Failure Code [DAJLKA] 1798
Failure Code [DAJLKB] 1800
Failure Code [DAJPMA] 1802
Failure Code [DAJQKR] 1803
Failure Code [DAJRKR] 1804
Failure Code [DB2QKR] 1805
Failure Code [DB2RKR] 1811
Failure Code [DB90KT] 1817
Failure Code [DB90MC] 1818
Failure Code [DB91KK] 1819
Failure Code [DB92KK] 1821
Failure Code [DB92KT] 1823
Failure Code [DB95KK] 1824
Failure Code [DB97KK] 1826
Failure Code [DB99KQ] 1828
Failure Code [DB9LKA] 1829
Failure Code [DB9LKB] 1831
Failure Code [DB9QKR] 1833
Failure Code [DB9RKR] 1834
Failure Code [DBU0KR] 1835
Failure Code [DBUSKR] 1836
Failure Code [DBUTKA] 1841
Failure Code [DBUTKN] 1842
Failure Code [DBUTMA] 1844
Failure Code [DBUUKA] 1846
Failure Code [DBUUKN] 1848
Failure Code [DD12KA] 1850
Failure Code [DD12KB] 1852
Failure Code [DD13KA] 1854
Failure Code [DD13KB] 1856
Failure Code [DD14KA] 1858
Failure Code [DD14KB] 1861
Failure Code [DDE9KA] 1864
Failure Code [DDE9KB] 1866
Failure Code [DDKAKA] 1868
Failure Code [DDKAKB] 1870
Failure Code [DDKFL4] 1872
Failure Code [DDKGL4] 1874
Failure Code [DDKHKA] 1876
Failure Code [DDKHKB] 1878
Failure Code [DDKQKA] 1880
Failure Code [DDKQKB] 1882
Failure Code [DDKRKA] 1884
Failure Code [DDKRKB] 1886
Failure Code [DDKSKA] 1888
Failure Code [DDKSKB] 1890
Failure Code [DDNLKA] 1892
Failure Code [DDNLKB] 1895
Failure Code [DDP6KA] 1898
Failure Code [DDP6KB] 1901
Failure Code [DDP6MA] 1903
Failure Code [DDU1FS] 1905
Failure Code [DDU1KA] 1907
Failure Code [DDU1KY] 1910
Failure Code [DFA4KX] 1912
Failure Code [DFA4KZ] 1913
Failure Code [DFA4L8] 1914
Failure Code [DFA5KA] 1915
Failure Code [DFA5KB] 1917
Failure Code [DFA6KA] 1919
Failure Code [DFA6KB] 1921
Failure Code [DFA7KX] 1923
Failure Code [DFA7KZ] 1924
Failure Code [DFA7L8] 1925
Failure Code [DFA8KA] 1926
Failure Code [DFA8KB] 1929
Failure Code [DFA9KA] 1931
Failure Code [DFA9KB] 1934
Failure Code [DFAAKX] 1936
Failure Code [DFAAKZ] 1937
Failure Code [DFAAL8] 1938
Failure Code [DFABKA] 1939
Failure Code [DFABKY] 1942
Failure Code [DFACKA] 1944
Failure Code [DFACKY] 1947
Failure Code [DGS1KA] 1949
Failure Code [DGS1KX] 1952
Failure Code [DH21KA] 1953
Failure Code [DH21KB] 1955
Failure Code [DHA4KA] 1957
Failure Code [DHAAMA] 1959
Failure Code [DHACMA] 1961
Failure Code [DHH7KA] 1963
Failure Code [DHH7KB] 1965
Failure Code [DHH8KA] 1967
Failure Code [DHH8KB] 1969
Failure Code [DHH9KA] 1971
Failure Code [DHH9KB] 1973
Failure Code [DHHAKA] 1975
Failure Code [DHHAKB] 1978
Failure Code [DHZ1KX] 1980
Failure Code [DK30KA] 1982
Failure Code [DK30KB] 1985
Failure Code [DK30KX] 1987
Failure Code [DK30KZ] 1988
Failure Code [DK30L8] 1989
Failure Code [DK31KA] 1990
Failure Code [DK31KB] 1993
Failure Code [DK40KA] 1995
Failure Code [DK40KB] 1998
Failure Code [DK55KX] 2000
Failure Code [DK55KZ] 2001
Failure Code [DK55L8] 2002
Failure Code [DK56KA] 2003
Failure Code [DK56KB] 2006
Failure Code [DK57KA] 2008
Failure Code [DK57KB] 2011
Failure Code [DK80KR] 2013
Failure Code [DK80KT] 2016
Failure Code [DKS0L8] 2019
Failure Code [DKS1KA] 2020
Failure Code [DKS1KB] 2022
Failure Code [DKS2KA] 2024
Failure Code [DKS2KB] 2026
Failure Code [DKS3KA] 2028
Failure Code [DKS3KB] 2030
Failure Code [DKS3MB] 2032
Failure Code [DKS4L8] 2034
Failure Code [DKS5KA] 2035
Failure Code [DKS5KB] 2037
Failure Code [DKS6KA] 2039
Failure Code [DKS6KB] 2041
Failure Code [DKS7MB] 2043
Failure Code [DKSCL8] 2044
Failure Code [DKSDKA] 2045
Failure Code [DKSDKB] 2047
Failure Code [DKSEKA] 2049
Failure Code [DKSEKB] 2051
Failure Code [DKSFMB] 2053
Failure Code [DLM0KX] 2054
Failure Code [DLM0MA] 2055
Failure Code [DLM1KA] 2056
Failure Code [DLM1KB] 2058
Failure Code [DLM1MA] 2060
Failure Code [DLM2KA] 2061
Failure Code [DLM2KB] 2063
Failure Code [DLM2MA] 2065
Failure Code [DLM3KA] 2066
Failure Code [DLM3KB] 2068
Failure Code [DLM3MB] 2070
Failure Code [DN21FS] 2071
Failure Code [DN21KA] 2073
Failure Code [DN21KY] 2076
Failure Code [DR21KX] 2078
Failure Code [DR31KX] 2079
Failure Code [DV20KB] 2080
Failure Code [DW4BKA] 2082
Failure Code [DW4BKB] 2084
Failure Code [DW4BKY] 2086
Failure Code [DW7BKA] 2088
Failure Code [DW7BKB] 2090
Failure Code [DW7EKA] 2092
Failure Code [DW7EKB] 2095
Failure Code [DW7EKY] 2098
Failure Code [DWH1KA] 2100
Failure Code [DWH1KB] 2102
Failure Code [DWN5KA] 2104
Failure Code [DWN5KB] 2106
Failure Code [DWN5KY] 2108
Failure Code [DXA4KA] (Applicable Machine: 70002 to 72160) 2110
Failure Code [DXA4KA] (Applicable Machine: 72161 and Up) 2112
Failure Code [DXA4KB] (Applicable Machine: 70002 to 72160) 2114
Failure Code [DXA4KB] (Applicable Machine: 72161 and Up) 2116
Failure Code [DXA4KY] (Applicable Machine: 70002 to 72160) 2118
Failure Code [DXA4KY] (Applicable Machine: 72161 and Up) 2120
Failure Code [DXA5KA] (Applicable Machine: 70002 to 72160) 2122
Failure Code [DXA5KA] (Applicable Machine: 72161 and Up) 2124
Failure Code [DXA5KB] (Applicable Machine: 70002 to 72160) 2126
Failure Code [DXA5KB] (Applicable Machine: 72161 and Up) 2128
Failure Code [DXA5KY] (Applicable Machine: 70002 to 72160) 2130
Failure Code [DXA5KY] (Applicable Machine: 72161 and Up) 2132
Failure Code [DXA6KA] (Applicable Machine: 70002 to 72160) 2134
Failure Code [DXA6KA] (Applicable Machine: 72161 and Up) 2136
Failure Code [DXA6KB] (Applicable Machine: 70002 to 72160) 2138
Failure Code [DXA6KB] (Applicable Machine: 72161 and Up) 2140
Failure Code [DXA6KY] (Applicable Machine: 70002 to 72160) 2142
Failure Code [DXA6KY] (Applicable Machine: 72161 and Up) 2144
Failure Code [DXA7KA] (Applicable Machine: 70002 to 72160) 2146
Failure Code [DXA7KA] (Applicable Machine: 72161 and Up) 2148
Failure Code [DXA7KB] (Applicable Machine: 70002 to 72160) 2150
Failure Code [DXA7KB] (Applicable Machine: 72161 and Up) 2152
Failure Code [DXA7KY] (Applicable Machine: 70002 to 72160) 2154
Failure Code [DXA7KY] (Applicable Machine: 72161 and Up) 2156
Failure Code [DXE0KA] 2158
Failure Code [DXE0KB] 2160
Failure Code [DXE0KY] 2161
Failure Code [DXHRKA] 2163
Failure Code [DXHRKB] 2165
Failure Code [DXHRKY] 2167
Failure Code [DXHSKA] 2169
Failure Code [DXHSKB] 2171
Failure Code [DXHSKY] 2173
Failure Code [DXHTKA] 2175
Failure Code [DXHTKB] 2177
Failure Code [DXHTKY] 2179
Failure Code [DXHUKA] 2181
Failure Code [DXHUKB] 2183
Failure Code [DXHUKY] 2185
Failure Code [DXHWKA] 2187
Failure Code [DXHWKB] 2189
Failure Code [DXHWKY] 2190
Failure Code [DXHXKA] 2192
Failure Code [DXHXKB] 2194
Failure Code [DXHXKY] 2195
Failure Code [DXJ4KA] 2197
Failure Code [DXJ4KB] 2199
Failure Code [DXJAKA] 2201
Failure Code [DXJAKB] 2203
Failure Code [DXJAKY] 2205
Failure Code [DXJCKA] 2207
Failure Code [DXJCKB] 2209
Failure Code [DXJCKY] 2211
Failure Code [DXJDKA] 2213
Failure Code [DXJDKB] 2215
Failure Code [DXJDKY] 2217
Failure Code [DXK1KA] 2219
Failure Code [DXK1KB] 2221
Failure Code [DXK1KY] 2223
Failure Code [DXK2KA] 2225
Failure Code [DXK2KB] 2227
Failure Code [DXK2KY] 2229
Failure Code [F311KA] 2231
Failure Code [F311KB] 2233
Failure Code [F312KA] 2235
Failure Code [F312KB] 2237
Failure Code [F313KA] 2239
Failure Code [F313KB] 2241
Failure Code [F314KA] 2244
Failure Code [F314KB] 2246
Failure Code [F315KB] 2248
Failure Code [F315KY] 2250
Failure Code [F316KB] 2252
Failure Code [F316KY] 2254
Failure Code [F318KB] 2256
Failure Code [F318KY] 2259
Failure Code [F31AKB] 2261
Failure Code [F31AKY] 2263
Failure Code [F31BKB] 2265
Failure Code [F31BKY] 2267
Failure Code [F31CKB] 2269
Failure Code [F31CKY] 2271
Failure Code [F31DKB] 2273
Failure Code [F31DKY] 2275
Failure Code [F31EKB] 2277
Failure Code [F31EKY] 2279
Failure Code [F7A0KQ] 2281
Failure Code [F7A0KT] 2282
Failure Code [F7A1KK] 2283
Failure Code [F7ALKB] 2286
Failure Code [F7AQKR] 2288
Failure Code [F7ASKA] 2289
Failure Code [FE0AKA] 2292
Failure Code [FS10ZE] 2294
Failure Code [M620KA] 2295
Failure Code [M620KB] 2297
Failure Code [M620KY] 2298
Troubleshooting of Electrical System (E-Mode) 2300
Engine Does Not Start (Engine Does Not Crank) 2300
Manual Preheating System Does Not Operate 2306
Automatic Preheating System Does Not Operate 2309
While Preheating is in Operation, Preheating Monitor Does Not Come On 2311
When Starting Switch is Turned to ON Position, Machine Monitor Shows Nothing 2313
When Starting Switch is Turned to ON Position (with Engine Stopped), Basic Check Monitor Comes On 2316
Air Cleaner Clogging Monitor Comes On in Yellow While Engine is in Operation 2317
Charge Level Monitor Comes On in Red While Engine is in Operation 2318
Engine Coolant Temperature Monitor Comes On in Red While Engine is in Operation 2319
Engine Oil Pressure Monitor Comes On in Red While Engine is in Operation 2320
HST Charge Pressure Monitor Comes On in Red While Engine Runs 2321
Hydraulic Oil Temperature Monitor Comes On in Red While Engine is in Operation 2322
HST Oil Filter Clogging Monitor Comes On in Red While Engine Runs 2323
Engine Coolant Temperature Gauge Does Not Show Correct Temperature 2324
DEF Level is Not Shown Correctly 2325
Fuel Gauge Does Not Show Normally 2328
Hydraulic Oil Temperature Gauge Does Not Show Correct Temperature 2331
Operation Mode Does Not Change 2332
When You Operate Customize Switch Does Not Show Customize Screen 2333
When You Change Setting on Customize Screen, Setting of Machine is Not Changed 2334
Service Meter is Not Shown While Starting Switch is in OFF Position 2335
Service Mode Cannot be Selected 2336
Work Equipment Does Not Operate 2337
Foot Heater Does Not Operate 2339
Horn Does Not Sound 2345
Horn Does Not Stop 2347
Backup Alarm Does Not Sound 2348
Backup Alarm Does Not Stop Operation 2349
Headlamp Does Not Come On 2350
Rear Lamp Does Not Come On 2354
No Wiper Operates 2357
Front Wiper Does Not Operate 2359
Rear Wiper Does Not Operate 2363
Left Door Wiper Does Not Operate 2367
Right Door Wiper Does Not Operate 2371
Front Washer Does Not Operate 2375
Rear Washer Does Not Operate 2377
Left Door Washer Does Not Operate 2379
Right Door Washer Does Not Operate 2381
KOMTRAX System Does Not Operate Correctly 2383
Control Box Shows Message [Waiting for radio link ] 2384
Control Box Shows Message [Waiting for satellites ] 2386
Control Box Shows Message [GPS receiver not connected !] and [Komatsu Machine Trouble] 2387
Control Box Shows Message [Komatsu Machine Trouble] 2388
Control Box Shows Message [Waiting to initialize ] 2389
Control Box Shows Message [System initializing] 2390
Control Box Shows Message [Initializing ] 2391
Control Box Shows Message [Connecting to GPS ] 2392
Elevation Control Key on Control Box Shows Message [Low precisions ] 2393
Control Box Shows Message [Heading Initializing] 2394
Control Box Shows Message [Out of design area ] 2395
Control Box Shows Message [No GPS localization ] 2396
Control Box Shows Message [Loading Design Surface data ] 2397
Control Box Shows Message [Design Surface data invalid] 2398
Control Box Shows Message [Starting switch is OFF] 2399
Control Box Shows Message [Waiting for satellites ] and [Komatsu Machine Trouble] 2401
Control Box Can Not be Turned on 2402
Control Box Does Not Display Intelligent Machine Control Screen 2404
Control Box Does Not Display Bulldozer Image 2405
Control Box Does Not Display Design Surface 2406
Control Box Touch Panel Does Not Respond 2407
Control Box Touch Panel is Inaccurate 2408
Cylinder Stroke Reset Indication Does Not Go Out 2409
AUTO is Not Shown When AUTO/Manual Switch is Pushed (AUTO Indication Goes off) 2410
When You Examine and Adjust the Blade Elevation, the Value is Different from Actual Machine 2412
Blade Automatic Lower Control Does Not Start While AUTO is Shown 2413
Blade Automatic Raise Control Does Not Start While AUTO is Shown 2414
Blade Automatic Control Function is Not Activated While AUTO is Shown (Blade Automatic Control Stops) 2415
Finished Surface is Inaccurate (The Average Height of Finished Surface is Lower Than Designed Surface or Blade Does Not Touch the Surface) 2416
Finished Surface is Inaccurate (The Finished Surface is Not Smooth) 2417
Finished Surface is Inaccurate (When You Finish Slope Horizontally, Steps are Made in Each Direction) 2418
Machine Cannot Escape from Shoes Slip While Blade Automatic Control is Activated (Shoes Frequently Slips) 2420
Machine Speed Does Not Increase While Blade Automatic Control is Activated 2421
Blade Tilt Angle Does Not Respond with Design Surface While Blade Automatic Control is Activated 2422
Blade Tilts While Blade Automatic Control is Activated 2424
Even After Lift Layer Control is Activated, Measured Lift Layer Terrain Shape Does Not Agree with Actual Terrain 2426
The Surface Made with Quick Surface Creation Function is Different from the One in Machine Front Direction, Blade Edge Position 2428
Machine Does Not Travel Straight While Tilt Steering Control is Activated 2429
Control Box Continues to Show Progress Bar in Machine Manual Cal Screen 2430
Engine Hunting Occurs When You Lower the Blade While Ground Line Assist is Activated 2431
[Laser Receiver Error (Red)] Icon is Shown on Control Box (2D Laser Machine Control) 2432
[System Error (Red)] Icon is Shown on Control Box (2D Laser Machine Control) 2436
[AUTO (Green)] is Not Shown on Control Box (2D Laser Machine Control) 2437
Finished Surface is Inaccurate (2D Laser Machine Control) 2438
Ground Surface Becomes Rough in Leveling Work (2D Laser Machine Control) 2439
Current Slope Value on Control Box is Different from Actual Value (2D Laser Machine Control) 2440
Automatic Control Cannot be Done If You Change Application (2D Laser Machine Control) 2441
Troubleshooting for Hydraulic and Mechanical Systems (H Mode) 2442
Information Shown in Troubleshooting Table (H-Mode) 2442
Failure Mode and Cause Table 2443
R H and L H Tracks Cannot Travel FORWARD and REVERSE (None of the Travel Systems Operate) 2449
R H or L H Track Cannot Travel FORWARD and REVERSE (One of R H or L H Travel Systems Cannot Operate) 2451
R H or L H Track Cannot Travel FORWARD or REVERSE (Only One of the Travel Systems Cannot Operate in One Direction) 2453
Travel Speed or Power is Low 2455
Speed Range Does Not Change 2457
Shock is Large When Machine Moves Off or Stops 2458
Travel Deviation is Large 2459
Machine Drift on a Slope is Large 2462
Engine Speed Drops Largely or Engine Stops 2464
Unusual Noise is Heard from Around HST Pump or Motor 2466
HST Oil Temperature (Hydraulic Oil Temperature) Increases Too High 2468
All Work Equipment Speed or Power is Low 2470
Blade Lift Speed or Power is Low 2471
Blade Tilt Speed or Power is Low 2473
Blade Angle Speed or Power is Low 2474
Hydraulic Drift of Lifted Ripper is Large 2476
Time Lag of Blade Lift is Large 2477
Hydraulic Drift of Blade Lift is Large 2478
Hydraulic Drift of Tilted Blade is Large 2479
Hydraulic Drift of Lifted Ripper is Large 2480
Unusual Noise is Heard from Around Work Equipment and Cooling Fan Pump or Control Valve 2481
Fan Speed is Abnormal (Too High or Low, or Does Not Rotate) 2482
Unusual Noise is Heard from Around Fan 2484
Troubleshooting of Engine (S-Mode) 2485
Information Shown in Troubleshooting Table (S-Mode) 2485
Engine Does Not Crank When Starting Switch is Turned to Start Position 2486
Engine Cranks but No Exhaust Smoke Comes Out 2487
Fuel is Sprayed but Engine Does Not Start (Misfiring: Engine Cranks but Does Not Start) 2488
Engine Startability is Unsatisfactory 2490
Engine Does Not Pick Up Smoothly 2492
Engine Stops During Operation 2494
Engine Does Not Rotate Smoothly 2496
Engine Lacks Output (or Lacks Power) 2497
KDPF Becomes Clogged in a Short Time 2499
Engine Oil Consumption is Excessive 2501
Engine Oil Becomes Dirty Quickly 2502
Fuel Consumption is Excessive 2503
Oil is in Coolant (or Coolant Spurts Back or Coolant Level Goes Down) 2504
Engine Oil Pressure Drops 2505
Fuel Mixes Into Engine Oil 2507
Water Mixes Into Engine Oil (Milky) 2508
Coolant Temperature Increases Too High (Overheat) 2509
Unusual Noise is Heard 2510
Vibration is Excessive 2511
Air Cannot be Bled from Fuel Circuit 2512
Active Regeneration is Done Frequently 2513
Active Regeneration Continues Long 2515
White Smoke is Exhausted During Active Regeneration 2516
DEF Consumption is Excessive 2517
There is an Unusual Smell (Irritating Odor) 2519
Foreign Materials Enter DEF (DEF Increases) 2520
50 Disassembly and Assembly 2521
Table of Contents 2522
Precautions Before Work 2528
Related Information on Disassembly and Assembly 2529
How to Read This Manual 2529
Coating Materials List 2530
Special Tool List 2535
Sketches of Special Tools 2557
Prepare 2569
Drain and Add Coolant 2569
How to Drain Coolant 2570
How to Add Coolant 2571
Drain and Add Hydraulic Oil 2574
How to Drain Hydraulic Oil 2575
How to Add Hydraulic Oil 2575
Drain and Add Fuel 2577
How to Drain Fuel 2577
How to Add Fuel 2578
Collect and Refill Refrigerant 2579
How to Collect Refrigerant 2580
How to Refill Refrigerant 2580
Engine and Cooling System 2581
Remove and Install Supply Pump Assembly 2581
How to Remove Supply Pump Assembly 2582
How to Install Supply Pump Assembly 2585
Remove and Install Injector Assembly 2590
How to Remove Injector Assembly 2591
How to Install Injector Assembly 2601
Remove and Install Cylinder Head Assembly 2616
How to Remove Cylinder Head Assembly 2618
How to Install Cylinder Head Assembly 2632
Remove and Install EGR Valve Assembly 2653
How to Remove EGR Valve Assembly 2654
How to Install EGR Valve Assembly 2655
Remove and Install EGR Cooler Assembly 2656
How to Remove EGR Cooler Assembly 2657
How to Install EGR Cooler Assembly 2658
Remove and Install Starter Assembly 2661
How to Remove Starting Motor Assembly 2662
How to Install Starting Motor Assembly 2664
Remove and Install Alternator Belt 2667
How to Remove Alternator Belt 2668
How to Install Alternator Belt 2669
Remove and Install Automatic Tensioner 2671
How to Remove Auto-Tensioner 2671
How to Install Auto-Tensioner 2672
Remove and Install Radiator Assembly 2673
How to Remove Radiator Assembly 2674
How to Install Radiator Assembly 2679
Remove and Install Hydraulic Oil Cooler Assembly 2684
How to Remove Hydraulic Oil Cooler Assembly 2685
How to Install Hydraulic Oil Cooler Assembly 2689
Remove and Install Aftercooler Assembly 2693
How to Remove Aftercooler Assembly 2694
How to Install Aftercooler Assembly 2697
Remove and Install Cooling Fan Drive Assembly 2701
How to Remove Cooling Fan Drive Assembly 2702
How to Install Cooling Fan Drive Assembly 2706
Remove and Install Cooling Fan Motor Assembly 2711
How to Remove Cooling Fan Motor Assembly 2712
How to Install Cooling Fan Motor Assembly 2715
Remove and Install Engine and HST Pump Assembly 2718
How to Remove Engine and HST Pump Assembly 2720
How to Install Engine and HST Pump Assembly 2734
Remove and Install Engine Front Oil Seal 2750
How to Remove Engine Front Oil Seal 2751
How to Install Engine Front Oil Seal 2756
Remove and Install Engine Rear Oil Seal 2761
How to Remove Engine Rear Oil Seal 2762
How to Install Engine Rear Oil Seal 2764
Remove and Install Engine Hood Assembly 2771
How to Remove Engine Hood Assembly 2772
How to Install Engine Hood Assembly 2779
Remove and Install Fuel Tank Assembly 2786
How to Remove Fuel Tank Assembly 2788
How to Install Fuel Tank Assembly 2796
Remove and Install DEF Tank Assembly 2803
How to Remove DEF Tank Assembly 2804
How to Install DEF Tank Assembly 2809
Remove and Install DEF Tank Sensor Flange Assembly 2814
How to Remove DEF Tank Sensor Flange Assembly 2815
How to Install DEF Tank Sensor Flange Assembly 2816
Remove and Install DEF Tank Sensor 2819
How to Remove DEF Tank Sensor 2820
How to Install DEF Tank Sensor 2821
Remove and Install DEF Tank Strainer 2828
How to Remove DEF Tank Strainer 2828
How to Install DEF Tank Strainer 2829
Remove and Install KDPF Assembly 2830
How to Remove KDPF Assembly 2831
How to Install KDPF Assembly 2835
Disassemble and Assemble KDPF Assembly 2841
How to Disassemble KDPF Assembly 2842
How to Assemble KDPF Assembly 2847
Remove and Install SCR Assembly 2854
How to Remove SCR Assembly 2855
How to Install SCR Assembly 2857
Remove and Install KDPF and SCR Assembly 2859
How to Remove KDPF and SCR Assembly 2860
How to Install KDPF and SCR Assembly 2871
Remove and Install KCCV Assembly 2883
How to Remove KCCV Assembly 2884
How to Install KCCV Assembly 2886
Remove and Install VGT Assembly 2888
How to Remove VGT Assembly 2889
How to Install VGT Assembly 2891
Remove and Install DEF Mixing Tube 2895
How to Remove DEF Mixing Tube 2896
How to Install DEF Mixing Tube 2900
Remove and Install DEF Injector 2906
How to Remove DEF Injector 2907
How to Install DEF Injector 2910
Remove and Install DEF Pump 2913
How to Remove DEF Pump 2914
How to Install DEF Pump 2918
Remove and Install DEF Hose 2921
How to Remove DEF Hose 2922
How to Install DEF Hose 2932
Remove and Install Air Cleaner Assembly 2941
How to Remove Air Cleaner Assembly 2942
How to Install Air Cleaner Assembly 2944
Remove and Install Air Conditioner Compressor Assembly 2946
How to Remove Air Conditioner Compressor Assembly 2947
How to Install Air Conditioner Compressor Assembly 2949
Remove and Install Air Conditioner Condenser Assembly 2951
How to Remove Air Conditioner Condenser Assembly 2952
How to Install Air Conditioner Condenser Assembly 2956
Power Train 2960
Remove and Install Damper Assembly 2960
How to Remove Damper Assembly 2960
How to Install Damper Assembly 2961
Remove and Install HST Pump Assembly 2962
How to Remove HST Pump Assembly 2963
How to Install HST Pump Assembly 2969
Remove and Install HST Motor and Final Drive Assembly 2976
How to Remove HST Motor and Final Drive Assembly 2977
How to Install HST Motor and Final Drive Assembly 2984
Disassemble and Assemble Final Drive Assembly 2991
How to Disassemble Final Drive Assembly 2992
How to Assemble Final Drive Assembly 2998
Undercarriage and Frame 3007
Remove and Install Track Frame Assembly 3007
How to Remove Track Frame Assembly 3008
How to Install Track Frame Assembly 3023
Remove and Install Idler Assembly 3036
How to Remove Idler Assembly 3037
How to Install Idler Assembly 3040
Disassemble and Assemble Idler Assembly 3043
How to Disassemble Idler Assembly 3043
How to Assemble Idler Assembly 3045
Remove and Install Recoil Spring Assembly 3050
How to Remove Recoil Spring Assembly 3050
How to Install Recoil Spring Assembly 3051
Disassemble and Assemble Recoil Spring Assembly 3052
How to Disassemble Recoil Spring Assembly 3052
How to Assemble Recoil Spring Assembly 3055
Remove and Install Track Roller Assembly 3058
How to Remove Track Roller Assembly 3059
How to Install Track Roller Assembly 3061
Disassemble and Assemble Track Roller Assembly 3064
How to Disassemble Track Roller Assembly 3064
How to Assemble Track Roller Assembly 3066
Remove and Install Carrier Roller Assembly 3070
How to Remove Carrier Roller Assembly 3071
How to Install Carrier Roller Assembly 3072
Disassemble and Assemble Carrier Roller Assembly 3074
How to Disassemble Carrier Roller Assembly 3074
How to Assemble Carrier Roller Assembly 3075
Remove and Install Pivot Shaft Assembly 3078
How to Remove Pivot Shaft Assembly 3079
How to Install Pivot Shaft Assembly 3080
Separate and Connect Track Assembly 3083
How to Examine Before Separation of Track Assembly 3084
How to Separate Track Assembly (Standard) 3084
How to Separate Track Assembly (When Track Frame Has Internal Defect) 3085
How to Install Track Assembly 3086
Disassemble and Assemble Track Assembly Generally 3089
How to Disassemble Full Track Shoe Assembly 3089
How to Assemble Full Track Shoe Assembly 3094
Disassemble and Assemble PLUS Type Track Assembly Generally 3108
Disassemble PLUS Type Track Assembly Generally 3109
How to Assemble PLUS Type Track Shoe Assembly Generally 3110
Disassemble and Assemble One Track Link Assembly in Field (Track Assembly) 3125
How to Disassemble One Track Link Assembly in Field (Track Assembly) 3126
How to Assemble One Track Link Assembly in Field (Track Assembly) 3127
Disassemble and Assemble One Track Link Assembly in Field (PLUS Type Track Assembly) 3134
Disassemble One Track Link Assembly in Field (PLUS Type Track Assembly) 3135
Assemble One Track Link Assembly in Field (PLUS Type Track Assembly) 3137
Remove and Install Equalizer Bar Assembly 3141
How to Remove Equalizer Bar Assembly 3142
How to Install Equalizer Bar Assembly 3144
Disassemble and Assemble Equalizer Bar Bushing 3147
How to Disassemble Equalizer Bar Bushing 3148
How to Assemble Equalizer Bar Bushing 3149
Remove and Install Segment Teeth 3150
How to Remove Segment Teeth 3151
How to Install Segment Teeth 3152
Hydraulic System 3154
Remove and Install Hydraulic Tank Assembly 3154
How to Remove Hydraulic Tank Assembly 3155
How to Install Hydraulic Tank Assembly 3161
Remove and Install Control Valve Assembly 3168
How to Remove Control Valve Assembly 3170
How to Install Control Valve Assembly 3176
Work Equipment 3183
Remove and Install Ripper Assembly 3183
How to Remove Ripper Assembly 3185
How to Install Ripper Assembly 3197
Remove and Install Blade Assembly 3209
How to Remove Blade Assembly 3210
How to Install Blade Assembly 3214
Remove and Install Work Equipment Assembly 3218
How to Remove Work Equipment Assembly 3219
How to Install Work Equipment Assembly 3223
Remove and Install Stroke and Reset Sensing Blade Lift Cylinder Assembly 3227
How to Remove Stroke and Reset Sensing Blade Lift Cylinder Assembly 3228
How to Install Stroke and Reset Sensing Blade Lift Cylinder Assembly 3230
Disassemble and Assemble Stroke and Reset Sensing Blade Lift Cylinder Assembly 3233
How to Disassemble Stroke and Reset Sensing Blade Lift Cylinder Assembly 3234
How to Assemble Stroke and Reset Sensing Blade Lift Cylinder Assembly 3239
Remove and Install Stroke Sensing Blade Tilt Cylinder Assembly 3248
How to Remove Stroke Sensing Blade Tilt Cylinder Assembly 3249
How to Install Stroke Sensing Blade Tilt Cylinder Assembly 3253
Disassemble and Assemble Stroke Sensing Blade Tilt Cylinder Assembly 3258
How to Disassemble Stroke Sensing Blade Tilt Cylinder Assembly 3259
How to Assemble Stroke Sensing Blade Tilt Cylinder Assembly 3263
Remove and Install Stroke Sensing Blade Angle Cylinder Assembly 3269
How to Remove Stroke Sensing Blade Angle Cylinder Assembly 3270
How to Install Stroke Sensing Blade Angle Cylinder Assembly 3274
Disassemble and Assemble Stroke Sensing Blade Angle Cylinder Assembly 3278
How to Disassemble Stroke Sensing Blade Angle Cylinder Assembly 3279
How to Assemble Stroke Sensing Blade Angle Cylinder Assembly 3283
CAB Related Parts 3289
Remove and Install Operator Cab Assembly 3289
How to Remove Operator Cab Assembly 3290
How to Install Operator Cab Assembly 3301
Remove and Install Operator Cab Glass (Adhered Glass) 3312
How to Remove Operator Cab Glass (Adhered Glass) 3314
How to Install Operator Cab Glass (Adhered Glass) 3314
Remove and Install Air Conditioner Unit Assembly 3320
How to Remove Air Conditioner Unit Assembly 3321
How to Install Air Conditioner Unit Assembly 3326
Remove and Install Receiver Drier 3332
How to Remove Receiver Drier 3333
How to Install Receiver Drier 3334
Remove and Install Operator Seat 3336
How to Remove Operator Seat 3337
How to Install Operator Seat 3339
How to Remove and Install Seat Belt 3341
How to Remove Seat Belt 3342
How to Install Seatbelt 3343
Remove and Install Foot Heater Assembly 3344
How to Remove Foot Heater Assembly 3345
How to Install Foot Heater Assembly 3348
Disassemble and Assemble Foot Heater Assembly 3352
How to Disassemble Foot Heater Assembly 3353
How to Assemble Foot Heater Assembly 3354
Electrical System 3357
Remove and Install Engine Controller Assembly 3357
How to Remove Engine Controller Assembly 3358
How to Install Engine Controller Assembly 3360
Remove and Install HST Controller Assembly 3363
How to Remove HST Controller Assembly 3364
How to Install HST Controller Assembly 3364
Remove and Install Work Equipment Controller Assembly 3366
How to Remove Work Equipment Controller Assembly 3367
How to Install Work Equipment Controller Assembly 3367
Remove and Install Machine Monitor Assembly 3369
How to Remove Machine Monitor Assembly 3370
How to Install Machine Monitor Assembly 3371
Remove and Install Mass Air Flow and Temperature Sensor 3373
How to Remove Mass Air Flow and Temperature Sensor 3374
How to Install Mass Air Flow and Temperature Sensor 3375
Remove and Install KCCV Crankcase Pressure Sensor 3376
How to Remove KCCV Crankcase Pressure Sensor 3377
How to Install KCCV Crankcase Pressure Sensor 3377
Remove and Install KDPF Temperature Sensor 3379
How to Remove KDPF Temperature Sensor 3380
How to Install KDPF Temperature Sensor 3382
Remove and Install KDPF Differential Pressure Sensor 3386
How to Remove KDPF Differential Pressure Sensor 3387
How to Install KDPF Differential Pressure Sensor 3388
Remove and Install SCR Temperature Sensor 3391
How to Remove SCR Temperature Sensor 3392
How to Install SCR Temperature Sensor 3394
Remove and Install Ammonia Sensor 3396
How to Remove Ammonia Sensor 3397
How to Install Ammonia Sensor 3398
Remove and Install SCR Outlet NOx Sensor 3400
How to Remove SCR Outlet NOx Sensor 3401
How to Install SCR Outlet NOx Sensor 3403
Remove and Install Rearview Camera 3406
How to Remove Rearview Camera 3407
How to Install Rearview Camera 3408
Remove and Install Gateway Function Controller 3409
How to Remove Gateway Function Controller 3410
How to Install Gateway Function Controller 3411
Remove and Install Communication Antenna 3413
How to Remove Communication Antenna 3414
How to Install Communication Antenna 3416
Remove and Install Navigation Controller 3419
How to Remove Navigation Controller 3420
How to Install Navigation Controller 3424
Remove and Install Control Box 3429
How to Remove Control Box 3429
How to Install Control Box 3430
Remove and Install GNSS Receiver 3431
How to Remove GNSS Receiver 3432
How to Install GNSS Receiver 3432
Remove and Install GNSS Antenna 3434
How to Remove GNSS Antenna 3435
How to Install GNSS Antenna 3439
Remove and Install IMU Sensor 3444
How to Remove IMU Sensor 3445
How to Install IMU Sensor 3446
60 Maintenance Standard 3447
Table of Contents 3448
Explanation of Terms for Maintenance Standard 3450
Engine and Cooling System 3452
Maintenance Standard for Engine Mount 3452
Maintenance Standard for Damper 3453
Maintenance Standard for Cooling System 3454
Maintenance Standard for Cooling Fan Motor 3455
Maintenance Standard for Hydraulic Oil Cooler Bypass and HST Charge Safety Valve 3457
Power Train 3458
Maintenance Standard for HST Pump 3458
Maintenance Standard for EPC Valve of HST Pump 3459
Maintenance Standard for Tow Receiving Valve of HST Pump 3460
Maintenance Standard for HST Charge Pump 3461
Maintenance Standard for Servo Valve 3463
Maintenance Standard for HST Motor 3465
Maintenance Standard for Final Drive 3466
Maintenance Standard for Sprocket for Conventional Type Track Shoes 3468
Maintenance Standard for Sprocket Tooth Profile Full-Scale Drawing for Conventional Type Track Shoes 3469
Maintenance Standard for Sprocket for PLUS Type Track Shoes 3471
Maintenance Standard for Sprocket Tooth Profile Full-Scale Drawing for PLUS Type Track Shoes 3472
Undercarriage and Frame 3474
Maintenance Standard for Suspension 3474
Maintenance Standard for Track Frame and Idler Cushion 3477
Maintenance Standard for Idler 3479
Maintenance Standard for Track Roller for Conventional Type Track Shoes (Single Flange Type) 3481
Maintenance Standard for Track Roller for Conventional Type Track Shoes (Double Flange Type) 3482
Maintenance Standard for Track Roller for PLUS Type Track Shoes (Single Flange Type) 3483
Maintenance Standard for Track Roller for PLUS Type Track Shoes (Double Flange Type) 3484
Maintenance Standard for Carrier Roller for Conventional Type Track Shoes 3485
Maintenance Standard for Carrier Roller for PLUS Type Track Shoes 3486
Maintenance Standard for Conventional Type Track Shoes 3487
Maintenance Standard for PLUS Type Track Shoes 3489
Maintenance Standard for Single Shoes 3491
Maintenance Standard for Swamp Shoes 3492
Hydraulic System 3493
Maintenance Standard for Hydraulic Tank 3493
Maintenance Standard for Work Equipment and Cooling Fan Pump 3494
Maintenance Standard for LS-EPC Valve 3495
Maintenance Standard for Control Valve 3496
Maintenance Standard for 5-Spool EPC and Solenoid Valve 3504
Maintenance Standard for EPC Valve 3505
Maintenance Standard for Angle Control EPC Valve 3506
Maintenance Standard for Quick Drop Valve 3507
Work Equipment 3509
Maintenance Standard for Front Work Equipment 3509
Maintenance Standard for Cutting Edge and End Bit 3512
Maintenance Standard for Blade Lift Cylinder 3513
Maintenance Standard for Stroke and Reset Sensing Blade Lift Cylinder 3514
Maintenance Standard for Stroke Sensing Blade Tilt Cylinder 3515
Maintenance Standard for Blade Angle Cylinder 3516
Maintenance Standard for Stroke Sensing Blade Angle Cylinder 3517
Maintenance Standard for Stroke and Reset Sensor for Blade Lift Cylinder 3518
Maintenance Standard for Stroke Sensor for Blade Tilt Cylinder 3519
Maintenance Standard for Stroke Sensor for Blade Angle Cylinder 3520
Maintenance Standard for Fixed Multi-Shank Ripper 3521
Maintenance Standard for Ripper Lift Cylinder 3523
CAB Related Parts 3524
Maintenance Standard for CAB Mount 3524
Electrical System 3525
Maintenance Standard for Steering Electric Lever 3525
80 Appendix 3527
Table of Contents 3528
Precautions Before Work 3529
Air Conditioner System 3530
Precautions for Refrigerant 3530
Air Conditioner Component 3531
Specifications of Air Conditioner 3534
Structure and Function of Refrigeration Cycle 3535
Outline of Refrigeration Cycle 3536
Component Parts of Air Conditioner System 3538
Air Conditioner Unit 3538
Configuration Diagram of Air Conditioner Unit 3538
Function of Air Conditioner Unit 3539
Component Parts of Air Conditioner Unit 3540
Function of Evaporator as Air Conditioner Unit Component 3540
Function of Heater Core as Air Conditioner Unit Component 3540
Function of Thermostat as Air Conditioner Unit Component 3540
Structure of Expansion Valve as Air Conditioner Unit Component 3541
Function of Expansion Valve as Air Conditioner Unit Component 3541
Operate Expansion Valve as Air Conditioner Unit Component 3541
Function of Dual Pressure Switch 3542
Function of Pressure Switch 3542
Compressor 3543
Structure of Compressor 3543
Specifications of Compressor 3543
Function of Compressor 3543
Condenser 3544
Structure of Condenser 3544
Specifications of Condenser 3544
Function of Condenser 3545
Receiver Drier 3546
Structure of Receiver Dryer 3546
Specifications of Receiver Dryer 3546
Function of Receiver Dryer 3546
Explanation of Procedure for Test of and Troubleshooting of Air Conditioner 3548
Circuit Diagram of Air Conditioner 3551
System Diagram of Air Conditioner 3552
Control Function of Air Conditioner 3553
Locations of Air Conditioner Parts and Layout of Connectors 3554
Examine Relay 3558
How to Examine Relay 3558
Air Conditioner Troubleshooting Chart 1 3560
Air Conditioner Troubleshooting Chart 2 3561
Information Shown in Troubleshooting Table 3564
Troubleshooting for Condenser Fan 3565
Troubleshooting for Compressor and Refrigerant System (Air is Not Cooled) 3568
Troubleshooting for Blower Motor System (No Air Comes Out or Air Flow is Abnormal) 3572
Troubleshooting for Temperature Control Function 3575
Troubleshooting by Gauge Pressure 3579
Connect Service Tool 3581
How to Connect Service Tool 3581
Precautions for Disconnection and Connection of Air Conditioner Piping 3582
Handle Compressor Oil 3584
90 Circuit Diagrams 3587
Table of Contents 3588
How to Read the Codes for Electric Cable 3590
Hydraulic Circuit Diagram 3594
Symbols Used in Hydraulic Circuit Diagram 3594
Hydraulic Circuit Diagram 3599
Hydraulic Circuit Diagram (Combination of Forward, Blade LOWER, and Cooling Fan Turns Normally) 3601
Hydraulic Circuit Diagram (Combination of Blade RAISE, Reverse, and Cooling Fan Turns Normally) 3603
Electrical Circuit Diagram 3605
Symbols Used in Electric Circuit Diagram 3605
Electrical Circuit Diagram (Applicable Machine: 70002 to 70281) (1/16) 3609
Electrical Circuit Diagram (Applicable Machine: 70002 to 70281) (2/16) 3611
Electrical Circuit Diagram (Applicable Machine: 70002 to 70281) (3/16) 3613
Electrical Circuit Diagram (Applicable Machine: 70002 to 70281) (4/16) 3615
Electrical Circuit Diagram (Applicable Machine: 70002 to 70281) (5/16) 3617
Electrical Circuit Diagram (Applicable Machine: 70002 to 70281) (6/16) 3619
Electrical Circuit Diagram (Applicable Machine: 70002 to 70281) (7/16) 3621
Electrical Circuit Diagram (Applicable Machine: 70002 to 70281) (8/16) 3623
Electrical Circuit Diagram (Applicable Machine: 70002 to 70281) (9/16) 3625
Electrical Circuit Diagram (Applicable Machine: 70002 to 70281) (10/16) 3627
Electrical Circuit Diagram (Applicable Machine: 70002 to 70281) (11/16) 3629
Electrical Circuit Diagram (Applicable Machine: 70002 to 70281) (12/16) 3631
Electrical Circuit Diagram (Applicable Machine: 70002 to 70281) (13/16) 3633
Electrical Circuit Diagram (Applicable Machine: 70002 to 70281) (14/16) 3635
Electrical Circuit Diagram (Applicable Machine: 70002 to 70281) (15/16) 3637
Electrical Circuit Diagram (Applicable Machine: 70002 to 70281) (16/16) 3639
Electrical Circuit Diagram (Applicable Machine: 70282 to 72160) (1/17) 3641
Electrical Circuit Diagram (Applicable Machine: 70282 to 72160) (2/17) 3643
Electrical Circuit Diagram (Applicable Machine: 70282 to 72160) (3/17) 3645
Electrical Circuit Diagram (Applicable Machine: 70282 to 72160) (4/17) 3647
Electrical Circuit Diagram (Applicable Machine: 70282 to 72160) (5/17) 3649
Electrical Circuit Diagram (Applicable Machine: 70282 to 72160) (6/17) 3651
Electrical Circuit Diagram (Applicable Machine: 70282 to 72160) (7/17) 3653
Electrical Circuit Diagram (Applicable Machine: 70282 to 72160) (8/17) 3655
Electrical Circuit Diagram (Applicable Machine: 70282 to 72160) (9/17) 3657
Electrical Circuit Diagram (Applicable Machine: 70282 to 72160) (10/17) 3659
Electrical Circuit Diagram (Applicable Machine: 70282 to 72160) (11/17) 3661
Electrical Circuit Diagram (Applicable Machine: 70282 to 72160) (12/17) 3663
Electrical Circuit Diagram (Applicable Machine: 70282 to 72160) (13/17) 3665
Electrical Circuit Diagram (Applicable Machine: 70282 to 72160) (14/17) 3667
Electrical Circuit Diagram (Applicable Machine: 70282 to 72160) (15/17) 3669
Electrical Circuit Diagram (Applicable Machine: 70282 to 72160) (16/17) 3671
Electrical Circuit Diagram (Applicable Machine: 70282 to 72160) (17/17) 3673
Electrical Circuit Diagram (2D Laser Machine Control) 3675
Electrical Circuit Diagram (Applicable Machine: 72161 and Up) (1/18) 3677
Electrical Circuit Diagram (Applicable Machine: 72161 and Up) (2/18) 3679
Electrical Circuit Diagram (Applicable Machine: 72161 and Up) (3/18) 3681
Electrical Circuit Diagram (Applicable Machine: 72161 and Up) (4/18) 3683
Electrical Circuit Diagram (Applicable Machine: 72161 and Up) (5/18) 3685
Electrical Circuit Diagram (Applicable Machine: 72161 and Up) (6/18) 3687
Electrical Circuit Diagram (Applicable Machine: 72161 and Up) (7/18) 3689
Electrical Circuit Diagram (Applicable Machine: 72161 and Up) (8/18) 3691
Electrical Circuit Diagram (Applicable Machine: 72161 and Up) (9/18) 3693
Electrical Circuit Diagram (Applicable Machine: 72161 and Up) (10/18) 3695
Electrical Circuit Diagram (Applicable Machine: 72161 and Up) (11/18) 3697
Electrical Circuit Diagram (Applicable Machine: 72161 and Up) (12/18) 3699
Electrical Circuit Diagram (Applicable Machine: 72161 and Up) (13/18) 3701
Electrical Circuit Diagram (Applicable Machine: 72161 and Up) (14/18) 3703
Electrical Circuit Diagram (Applicable Machine: 72161 and Up) (15/18) 3705
Electrical Circuit Diagram (Applicable Machine: 72161 and Up) (16/18) 3707
Electrical Circuit Diagram (Applicable Machine: 72161 and Up) (17/18) 3709
Electrical Circuit Diagram (Applicable Machine: 72161 and Up) (18/18) 3711
Index 3713

DESCRIPTION:

Komatsu D71EXi-24 D71EXi-24E0 D71PXi-24 D71PXi-24E0 Bulldozer Shop Manual SEN06842-09 – PDF DOWNLOAD 

SERIAL NUMBERS

D71EXi-70002and up
D71PXi-70002 and up

Foreword, Safety, Basic Information:
How to Read the Shop Manual:
• Some of the attachments and options described in this shop manual may not be available in some areas. If
they are required, consult your Komatsu distributor.
• The materials and specifications are subject to change without notice.
• Shop Manuals are available for “machine part” and “engine part”. For the engine unit, see the shop manual
for the machine which has the same engine model.
• Actual machine may differ from the images which are contained in this manual. A typical model is shown in
the illustrations of this shop manual.
• The caution lamps, pilot lamps, and symbols of the switches on the machine monitor can be different in
accordance with the machine.
• For details of the symbols shown on the machine monitor, see Structure and Operation, “Caution
Lamps Shown on Machine Monitor” and “Pilot Lamps Shown on Machine Monitor”.
• For details of the switches of the machine monitor, see Testing and Adjusting, “Set and Operate Machine
Monitor”.
• For details of the switches, see the “Operation and Maintenance Manual”.
• All “AdBlue/DEF” shown on the machine monitor is referred to as “DEF” in the shop manual. Some machine
monitors installed to the product show “DEF” as “AdBlue/DEF” in the service mode. Thus, be sure to recognize
that “DEF” and “AdBlue/DEF” are the same when you read the shop manual.

Composition of the Shop Manual:
This shop manual contains technical information necessary to perform services in workshops. It is divided into
the following chapters for the ease of use.
00 Index and Foreword
This section describes the index, foreword, safety, and basic information.
01 Specification
This section describes the specifications of the machine.
10 Structure and Function
This section describes the structure and operation of each component with respect to each system. “Structure
and Function” is helpful in not only understanding the structure of each component but performing troubleshooting.
20 Standard Value Table
This section describes the standard values for new machine and failure criteria for testing and adjusting, and
troubleshooting. Use the standard values table to check the standard values for testing and adjusting, and judge
troubles in troubleshooting.
30 Testing and Adjusting
This section describes the measuring tools and measuring methods for testing and adjusting as well as the adjusting
method of each part. The standard values and repair limit for TESTING AND ADJUSTING are described
in “Standard Value Table”.
40 Troubleshooting
This section describes troubleshooting of failure part and its remedy method on the occurrence of the failure.
Descriptions of troubleshooting are sorted by failure mode.

IMAGES PREVIEW OF THE MANUAL:

S.V 28/12/24