Komatsu Bulldozer D71EX-24 D71EX-24E0 D71PX-24 D71PX-24E0 Shop Manual PDF

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Komatsu Bulldozer D71EX-24, D71EX-24E0, D71PX-24, D71PX-24E0 ,Shop Manual EENBM00300 – PDF DOWNLOAD

FILE DETAILS:

Komatsu Bulldozer D71EX-24, D71EX-24E0, D71PX-24, D71PX-24E0, Shop Manual EENBM00300 – PDF DOWNLOAD

Language : English
Pages : 510
Downloadable : Yes
File Type : PDF

IMAGES PREVIEW OF THE MANUAL:

TABLE OF CONTENTS:

Komatsu Bulldozer D71EX-24, D71EX-24E0 ,D71PX-24 ,D71PX-24E0 ,Shop Manual EENBM00300 – PDF DOWNLOAD

SERIAL NUMBERS

• D71EX-70002 and up
  D71PX-70002 and up

00 INDEX AND FOREWORD . 3
INDEX . 4
FOREWORD, SAFETY, BASIC INFORMATION . 8
HOW TO READ THE SHOP MANUAL . 8
SAFETY NOTICE FOR OPERATION . 10
PRECAUTIONS TO PREVENT FIRE . 18
ACTIONS IF FIRE OCCURS 20
PRECAUTIONS FOR DISPOSING OF WASTE MATERIALS 21
ACTIONS TAKEN TO MEET EXHAUST GAS REGULATIONS . 22
PRECAUTIONS FOR DEF . 23
GENERAL CHARACTER AND PRECAUTIONS FOR HANDLING 23
PRECAUTIONS FOR ADDING 23
PRECAUTIONS FOR STORING . 23
PRECAUTIONS FOR FIRE HAZARD AND LEAKAGE . 23
THE OTHER PRECAUTIONS . 23
STORE AdBlue/DEF 24
PRECAUTIONS FOR HANDLING HYDRAULIC EQUIPMENT 25
PRECAUTIONS FOR DISCONNECTION AND CONNECTION OF PIPINGS . 28
PRECAUTIONS FOR HANDLING ELECTRICAL EQUIPMENT . 35
PRECAUTIONS FOR HANDLING FUEL SYSTEM EQUIPMENT 37
PRECAUTIONS FOR HANDLING INTAKE SYSTEM EQUIPMENT 38
PRACTICAL USE OF KOMTRAX 39
DISCONNECT AND CONNECT PUSH-PULL TYPE COUPLER . 40
METHOD FOR DISCONNECTING AND CONNECTING TYPE 1 PUSH-PULL TYPE COUPLER . 40
METHOD FOR DISCONNECTING AND CONNECTING TYPE 2 PUSH-PULL TYPE COUPLER . 41
METHOD FOR DISCONNECTING AND CONNECTING TYPE 3 PUSH-PULL TYPE COUPLER . 42
PRECAUTIONS FOR DISCONNECTION AND CONNECTION OF CONNECTORS 44
METHOD FOR DISCONNECTING AND CONNECTING DEUTSCH CONNECTOR . 48
METHOD FOR DISCONNECTING AND CONNECTING SLIDE LOCK TYPE CONNECTOR . 49
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH LOCK TO PULL . 51
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH LOCK TO PUSH . 52
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH HOUSING TO ROTATE 54
HOW TO READ ELECTRICAL WIRE CODE 55
EXPLANATION OF TERMS FOR MAINTENANCE STANDARD . 59
STANDARD TIGHTENING TORQUE TABLE 62
CONVERSION TABLE 69
ABBREVIATION LIST . 74
01 SPECIFICATION 77
CONTENTS 78
SPECIFICATIONS 79
SPECIFICATION DRAWING . 79
SPECIFICATION DRAWING: D71EX-24, D71EX-24E0 . 79
SPECIFICATION DRAWING: D71PX-24, D71PX-24E0 . 81
SPECIFICATION DRAWING: D71PX-24, D71PX-24E0 (WIDE GAUGE SPECIFICATION) 83
SPECIFICATIONS 85
SPECIFICATIONS: D71EX-24, D71EX-24E0 85
SPECIFICATIONS: D71PX-24, D71PX-24E0 90
SPECIFICATIONS: D71PX-24, D71PX-24E0 (WIDE GAUGE SPECIFICATION) . 95
WEIGHT TABLE 100
WEIGHT TABLE: D71EX-24, D71EX-24E0 100
WEIGHT TABLE: D71PX-24, D71PX-24E0 102
WEIGHT TABLE: D71PX-24, D71PX-24E0 (WIDE GAUGE SPECIFICATION) .104
FUEL, COOLANT, LUBRICANTS (FOR NORTH AMERICA) .106
METHOD FOR USING FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE 106
FUEL, COOLANT, LUBRICANTS (FOR EUROPEAN UNION) 108
METHOD FOR USING FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE 108
10 STRUCTURE AND FUNCTION .111
CONTENTS 112
UREA SCR SYSTEM .115
LAYOUT DRAWING OF UREA SCR SYSTEM .115
UREA SCR SYSTEM DIAGRAM .117
FUNCTION OF UREA SCR SYSTEM .118
FUNCTION OF AdBlue/DEF SYSTEM .118
INDUCEMENT STRATEGY .120
COMPONENT PARTS OF UREA SCR SYSTEM 134
AdBlue/DEF MIXING TUBE 134
SCR ASSEMBLY 135
AdBlue/DEF TANK .137
AdBlue/DEF PUMP .139
AdBlue/DEF INJECTOR .140
AdBlue/DEF HOSE .141
AdBlue/DEF TANK HEATING VALVE .142
BOOT-UP SYSTEM 143
LAYOUT DRAWING OF BOOT-UP SYSTEM 143
SYSTEM OPERATING LAMP SYSTEM 144
SYSTEM DIAGRAM OF SYSTEM OPERATING LAMP SYSTEM 144
FUNCTION OF SYSTEM OPERATING LAMP SYSTEM 144
BATTERY DISCONNECT SWITCH .146
FUNCTION OF BATTERY DISCONNECT SWITCH .146
OPERATION OF BATTERY DISCONNECT SWITCH 146
ASSISTANCE VALVE FOR STARTUP 147
STRUCTURE OF ASSISTANCE VALVE FOR STARTUP .147
FUNCTION OF ASSISTANCE VALVE FOR STARTUP 147
ENGINE SYSTEM .148
LAYOUT DRAWING OF ENGINE SYSTEM .148
ENGINE CONTROL SYSTEM .150
LAYOUT DRAWING OF ENGINE CONTROL SYSTEM .150
SYSTEM DIAGRAM OF ENGINE CONTROL SYSTEM .152
FUNCTION OF ENGINE CONTROL SYSTEM .153
ENGINE AUTOMATIC WARM-UP SYSTEM .155
FUNCTION OF ENGINE AUTOMATIC WARM-UP SYSTEM .155
AUTOMATIC IDLE STOP SYSTEM 156
SYSTEM DIAGRAM OF AUTOMATIC IDLE STOP SYSTEM 156
FUNCTION OF AUTOMATIC IDLE STOP SYSTEM 156
COMPONENT PARTS OF ENGINE SYSTEM 159
DAMPER 159
VGT .160
EGR SYSTEM 164
EGR VALVE .166
EGR COOLER 168
KCCV SYSTEM .170
KCCV VENTILATOR .172
KDPF 174
COOLING SYSTEM 178
LAYOUT DRAWING OF COOLING SYSTEM 178
SPECIFICATIONS OF COOLING SYSTEM 179
COOLING FAN CONTROL SYSTEM 180
SYSTEM DIAGRAM OF COOLING FAN CONTROL SYSTEM 180
FUNCTION OF COOLING FAN CONTROL SYSTEM 180
COOLING SYSTEM 182
COOLING FAN MOTOR .182
HYDRAULIC OIL COOLER BYPASS AND HST CHARGE SAFETY VALVE .188
HYDRAULIC OIL COOLER BYPASS VALVE .190
HST CHARGE SAFETY VALVE .191
CONTROL SYSTEM 193
LAYOUT DRAWING OF CONTROL SYSTEM 193
MACHINE MONITOR SYSTEM 194
SYSTEM DIAGRAM OF MACHINE MONITOR .194
FUNCTION OF MACHINE MONITOR SYSTEM 194
KOMTRAX SYSTEM 196
KOMTRAX SYSTEM DIAGRAM 196
FUNCTION OF KOMTRAX SYSTEM 196
CONTROL SYSTEM 197
MACHINE MONITOR .197
GATEWAY FUNCTION CONTROLLER .214
COMMUNICATION TERMINAL 217
HST CONTROLLER 219
WORK EQUIPMENT CONTROLLER .223
ENGINE CONTROLLER .227
FUEL CONTROL DIAL .234
DECELERATION AND BRAKE POTENTIOMETER 236
HYDRAULIC SYSTEM 238
LAYOUT DRAWING OF HYDRAULIC SYSTEM 238
CLSS 239
STRUCTURE OF CLSS .239
FUNCTION OF CLSS 240
HYDRAULIC SYSTEM 243
HYDRAULIC TANK 243
WORK EQUIPMENT AND COOLING FAN PUMP .245
LS VALVE 250
PC VALVE 256
LS-EPC VALVE 260
CONTROL VALVE .263
POWER TRAIN SYSTEM 280
LAYOUT DRAWING OF HST SYSTEM 280
OPERATION OF HST SYSTEM .281
STEERING AND BRAKE CONTROL SYSTEM .283
LAYOUT DRAWING OF STEERING AND BRAKE CONTROL SYSTEM .283
FUNCTION OF STEERING AND BRAKE CONTROL SYSTEM .283
HST CONTROL SYSTEM 285
SYSTEM DIAGRAM OF HST CONTROL SYSTEM 285
GEAR SHIFT CONTROL FUNCTION .286
ENGINE LOW SPEED MATCHING CONTROL FUNCTION 290
HST PUMP AND MOTOR SEQUENCE CONTROL FUNCTION 290
DECELERATION AND BRAKE CONTROL FUNCTION .292
GEAR SHIFT CONTROL FUNCTION BY LOAD .293
TURN CONTROL FUNCTION .293
STRAIGHT TRAVEL CORRECTION CONTROL FUNCTION .295
PARKING BRAKE CONTROL SYSTEM 296
SYSTEM DIAGRAM OF PARKING BRAKE CONTROL SYSTEM 296
FUNCTION OF PARKING BRAKE CONTROL SYSTEM 296
OPERATION OF PARKING BRAKE CONTROL SYSTEM .297
POWER TRAIN SYSTEM 299
HST PUMP 299
HST CHARGE PUMP .313
HST MOTOR .321
FINAL DRIVE .334
ELECTRIC STEERING LEVER .338
WORK EQUIPMENT SYSTEM .341
WORK EQUIPMENT CONTROL 341
LAYOUT DRAWING OF WORK EQUIPMENT CONTROL 341
FUNCTION OF WORK EQUIPMENT CONTROL 341
LAYOUT DRAWING OF FRONT WORK EQUIPMENT 343
LAYOUT DRAWING OF FIXED MULTI-SHANK RIPPER 344
WORK EQUIPMENT SYSTEM .345
5-SPOOL EPC AND SOLENOID VALVE 346
PILOT CIRCUIT ACCUMULATOR .352
ANGLE CONTROL EPC VALVE .353
QUICK DROP VALVE 356
PISTON VALVE 361
BLADE ELECTRIC LEVER 362
RIPPER CONTROL LEVER 364
UNDERCARRIAGE AND FRAME .366
MAIN FRAME 366
STRUCTURE OF MAIN FRAME .366
SUSPENSION 367
STRUCTURE OF SUSPENSION .367
SPECIFICATIONS OF SUSPENSION 368
FUNCTION OF SUSPENSION 369
TRACK FRAME AND IDLER CUSHION .370
STRUCTURE OF TRACK FRAME, IDLER CUSHION .370
FUNCTION OF TRACK FRAME AND IDLER CUSHION .371
WORK EQUIPMENT 372
STRUCTURE OF FRONT WORK EQUIPMENT .372
STRUCTURE OF FIXED MULTI-SHANK RIPPER .373
CAB RELATED PARTS .374
ROPS CAB 374
STRUCTURE OF ROPS CAB .374
FUNCTION OF ROPS CAB 375
CAB MOUNT .376
STRUCTURE OF CAB MOUNT 376
FUNCTION OF CAB MOUNT .376
60 MAINTENANCE STANDARD .377
CONTENTS 378
EXPLANATION OF TERMS FOR MAINTENANCE STANDARD .380
ENGINE AND COOLING SYSTEM .382
MAINTENANCE STANDARD OF ENGINE MOUNT 382
MAINTENANCE STANDARD OF DAMPER 383
MAINTENANCE STANDARD OF COOLING SYSTEM 384
MAINTENANCE STANDARD OF COOLING FAN MOTOR .385
MAINTENANCE STANDARD OF HYDRAULIC OIL COOLER BYPASS AND HST CHARGE SAFETY VALVE .387
POWER TRAIN .388
MAINTENANCE STANDARD OF HST PUMP 388
MAINTENANCE STANDARD OF EPC VALVE OF HST PUMP .389
MAINTENANCE STANDARD OF TOW RECEIVING VALVE OF HST PUMP .390
MAINTENANCE STANDARD OF HST CHARGE PUMP .391
MAINTENANCE STANDARD OF SERVO VALVE .393
MAINTENANCE STANDARD OF HST MOTOR .395
MAINTENANCE STANDARD OF FINAL DRIVE .396
MAINTENANCE STANDARD OF SPROCKET FOR CONVENTIONAL TYPE TRACK SHOE .398
MAINTENANCE STANDARD OF SPROCKET TOOTH PROFILE FULL-SCALE DRAWING FOR CONVENTIONAL TYPE TRACK SHOE 399
MAINTENANCE STANDARD OF SPROCKET FOR PLUS TYPE TRACK SHOE .401
MAINTENANCE STANDARD OF SPROCKET TOOTH PROFILE FULL-SCALE DRAWING FOR PLUS TYPE TRACK SHOE 402
UNDERCARRIAGE AND FRAME .404
MAINTENANCE STANDARD OF SUSPENSION 404
MAINTENANCE STANDARD OF TRACK FRAME AND IDLER CUSHION .407
MAINTENANCE STANDARD OF IDLER .409
MAINTENANCE STANDARD OF TRACK ROLLER FOR CONVENTIONAL TYPE TRACK SHOE (SINGLE FLANGE TYPE) 411
MAINTENANCE STANDARD OF TRACK ROLLER FOR CONVENTIONAL TYPE TRACK SHOE (DOUBLE FLANGE TYPE) 412
MAINTENANCE STANDARD OF TRACK ROLLER FOR PLUS TYPE TRACK SHOE (SINGLE FLANGE TYPE) 413
MAINTENANCE STANDARD OF TRACK ROLLER FOR PLUS TYPE TRACK SHOE (DOUBLE FLANGE TYPE) 414
MAINTENANCE STANDARD OF CARRIER ROLLER FOR CONVENTIONAL TYPE TRACK SHOE .415
MAINTENANCE STANDARD OF CARRIER ROLLER FOR PLUS TYPE TRACK SHOE .416
MAINTENANCE STANDARD OF CONVENTIONAL TYPE TRACK SHOE 417
MAINTENANCE STANDARD OF PLUS TYPE TRACK SHOE 419
MAINTENANCE STANDARD OF SINGLE SHOE .421
MAINTENANCE STANDARD OF SWAMP SHOE 422
HYDRAULIC SYSTEM 423
MAINTENANCE STANDARD OF HYDRAULIC TANK 423
MAINTENANCE STANDARD OF WORK EQUIPMENT AND COOLING FAN PUMP .424
MAINTENANCE STANDARD OF LS-EPC VALVE 425
MAINTENANCE STANDARD OF CONTROL VALVE .426
MAINTENANCE STANDARD OF 5-SPOOL EPC AND SOLENOID VALVE 434
MAINTENANCE STANDARD OF EPC VALVE .435
MAINTENANCE STANDARD OF ANGLE CONTROL EPC VALVE .436
MAINTENANCE STANDARD OF QUICK DROP VALVE 437
WORK EQUIPMENT 439
MAINTENANCE STANDARD OF FRONT WORK EQUIPMENT 439
MAINTENANCE STANDARD OF CUTTING EDGE AND END BIT 442
MAINTENANCE STANDARD OF BLADE LIFT CYLINDER .443
MAINTENANCE STANDARD OF BLADE TILT CYLINDER .444
MAINTENANCE STANDARD OF BLADE ANGLE CYLINDER 445
MAINTENANCE STANDARD OF FIXED MULTI-SHANK RIPPER 446
MAINTENANCE STANDARD OF RIPPER LIFT CYLINDER 448
CAB RELATED PARTS .449
MAINTENANCE STANDARD OF CAB MOUNT .449
ELECTRICAL SYSTEM .450
MAINTENANCE STANDARD OF ELECTRIC STEERING LEVER .450
90 CIRCUIT DIAGRAMS .451
CONTENTS 452
HOW TO READ THE CODES FOR ELECTRIC CABLE 453
HYDRAULIC CIRCUIT DIAGRAM .457
SYMBOLS USED IN HYDRAULIC CIRCUIT DIAGRAM .457
HYDRAULIC CIRCUIT DIAGRAM .461
HYDRAULIC CIRCUIT DIAGRAM (COMBINATION OF BLADE LOWER, FOWARD, AND COOLING FAN TURNS NORMALLY) 463
HYDRAULIC CIRCUIT DIAGRAM (COMBINATION OF BLADE RAISE, REVERSE, AND COOLING FAN TURNS NORMALLY) .465
ELECTRICAL CIRCUIT DIAGRAM 467
SYMBOLS USED IN ELECTRIC CIRCUIT DIAGRAM 467
ELECTRICAL CIRCUIT DIAGRAM (1/16) .471
ELECTRICAL CIRCUIT DIAGRAM (2/16) .473
ELECTRICAL CIRCUIT DIAGRAM (3/16) .475
ELECTRICAL CIRCUIT DIAGRAM (4/16) .477
ELECTRICAL CIRCUIT DIAGRAM (5/16) .479
ELECTRICAL CIRCUIT DIAGRAM (6/16) .481
ELECTRICAL CIRCUIT DIAGRAM (7/16) .483
ELECTRICAL CIRCUIT DIAGRAM (8/16) .485
ELECTRICAL CIRCUIT DIAGRAM (9/16) .487
ELECTRICAL CIRCUIT DIAGRAM (10/16) 489
ELECTRICAL CIRCUIT DIAGRAM (11/16) 491
ELECTRICAL CIRCUIT DIAGRAM (12/16) 493
ELECTRICAL CIRCUIT DIAGRAM (13/16) 495
ELECTRICAL CIRCUIT DIAGRAM (14/16) 497
ELECTRICAL CIRCUIT DIAGRAM (15/16) 499
ELECTRICAL CIRCUIT DIAGRAM (16/16) 501
INDEX 503

DESCRIPTION:

Komatsu Bulldozer D71EX-24, D71EX-24E0, D71PX-24,D71PX-24E0, Shop Manual EENBM00300 – PDF DOWNLOAD

SERIAL NUMBERS

• D71EX-70002 and up
  D71PX-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.
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 SPECIFICATIONS
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.
50 DISASSEMBLY AND ASSEMBLY
This section describes the special tools, work procedures, and safety precautions necessary for removal, installation,
disassembly, and assembly of the components and parts. In addition, tightening torques, quantity, and
weight of the coating materials, lubricants, and coolant necessary to these works are shown.
60 MAINTENANCE STANDARD
This section describes the maintenance standard value of each component. The maintenance standard shows
the criteria and remedies for disassembly and assembly.
80 THE OTHER INFORMATION
This section describes the structure and function, testing and adjusting, and troubleshooting for all of the other
components or equipment which cannot be separately classified in the appendix.
90 Circuit diagrams
This section describes hydraulic circuit diagrams and electrical circuit diagrams.

G.B 22/ 12/24