Komatsu HA-250, HA-270 Dump Truck Repair Shop Manual SEBMHA250104 PDF

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Komatsu HA-250, HA-270 Dump Truck Repair Shop Manual SEBMHA250104  – PDF DOWNLOAD

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Komatsu HA-250, HA-270 Dump Truck Repair Shop Manual SEBMHA250104  – PDF DOWNLOAD

Language : English
Pages : 513
Downloadable : Yes
File Type : PDF

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TABLE OF CONTENTS:

Komatsu HA-250, HA-270 Dump Truck Repair Shop Manual SEBMHA250104  – PDF DOWNLOAD

COVER 1
CONTENTS . 2
0.0 GENERAL INSTRUCTION 3
0.0. 2 FOREWORD 4
0.0. 3 TYPE OF SEALINGS/LOCKING COMPOUNDS AND LUBRICANTS . 5
0.0. 4 WEIGHTS AND MEASURES 6
0.0. 5 TORQUE LIMIT TABLE 7
0.0. 6 SAFETY IN SERVICE WORK SHOPS 8
0.0.26 PRECAUTION FOR DISASSEMBLY AND ASSEMBLY . 28
0.0.30 GENERAL LOCATION 32
0.0.31 DRIVE LINE VIEW . 33
0.0.32 MACHINE SPECIFICATION (HA270-1) . 34
0.0.34 MACHINE SPECIFICATION (HA250-1) . 36
0.0.36 MACHINE SPECIFICATION (HA270-3 & HA250-3) . 38
0.0.38 PERFORMANCE CHART (HA270-3) . 40
0.0.39 EXHAUST BRAKE CAPACITY DIAGRAM-HA270 HA270-3 41
0.0.40 PERFORMANCE CHART (HA250-3) . 42
0.0.41 EXHAUST BRAKE CAPACITY DIAGRAM (HA250-3) . 43
0.0.42 FILLING CAPACITIES 44
0.0.43 OIL AND FLUID SPECIFICATION . 45
0.0.44 TRANSMISSION OIL LIST . 46
1.0 ENGINE . 47
2.0 TRANSMISSION . 48
2.1 STRUCTURE AND FUNCTION . 48
2.1. 1 GENERAL DESCRIPTION . 49
2.1. 8 SPEED CHANGE DIAGRAM 55
2.1. 9 CONTROL VALVE WITH LOCK-UP VALVE 56
2.1.11 OIL CIRCUIT DIAGRAM . 57
2.1.12 OIL CIRCUIT DIAGRAM WITH ELECTRIC-SHIFT UNIT AND CONVERTER LOCK-UP CLUTCH WORK 58
2.1.14 INDUCTIVE TRANSMITTER . 59
2.2 TESTING AND ADJUSTING 60
2.2. 1 STANDARD VALUES . 61
2.2. 2 SHIFTING POINTS, AUTOMATIC TRANSMISSION . 62
2.2. 3 MEASURING OIL LEVEL AND TEMPERATURE . 63
2.2. 4 MEASURING PRESSURE AND DELIVERY AND TEMPERATURE . 64
2.2. 5 MEASURING LOCATION 65
2.2. 6 TESTING UNITS . 66
2.2. 7 ADJUSTING OF INDUCTIVE TRANSMITTER 67
2.2. 8 STALL PERFORMANCE . 68
2.2. 9 ADJUSTING OF INTER AXLE DIFFERENTIAL LOCK . 69
2.3 DISASSEMBLY AND ASSEMBLY . 70
2.3.01 TRANSMISSION ASS’Y 72
2.3. 1 TRANSMISSION CONTROL VALVE 82
2.3.10 TORQUE CONVERTER 91
2.3.25 TRANSMISSION 106
2.3.77 INTERMED DIFERENTIAL 158
2.3.92 SPECIAL TOOLS .173
2.4 MAINTENANCE STANDARD .176
2.4. 1 OIL CONTAMINATION .177
2.5 TROUBLESHOOTING 178
2.5.1 TENPERATURE TOO HIGH .179
2.5.2 NO FUNCTION ALL GEARS 180
2.5.3 NO FUNCTION 1st AND 2nd GEAR .181
2.5.4 CONTROL PRESSURE TOO LOW IN ALL GEARS 182
3.0 DRIVELINE, BRAKES AND WHEELS .183
3.1 STRUCTURE AND FUNCTION .183
3.1. 1 FRONT AND REAR DIFFERENTIAL .184
3.1. 8 FRONT REDUCTION GEAR 190
3.1. 9 BRAKES 191
3.1.11 AUTOMATIC SLACK ADJUSTER 193
3.1.15 TYRES .197
3.2 TESTING AND ADJUSTING 198
3.2.1 MEASURING OIL LEVELS .199
3.2.2 FRONT WHEEL BEARING ADJUSTMENT .200
3.2.3 ADJUSTING OF REAR DIFFERENTIAL LOCK 201
3.2.4 MAIN BRAKE .202
3.2.5 PARK BRAKE .203
3.3 DISASSEMBLY AND ASSEMBLY .205
3.3. 1 FRONT DIFFERENTIAL .206
3.3. 24 REAR DIFFERENTIAL 229
3.3. 56 FRONT REDUCTION GEAR .260
3.3. 71 TANDEM HOUSING .275
3.3. 89 TYRES 292
3.3. 91 MASTER CYLINDER 294
3.3. 93 BRAKE CALLIPER .296
3.3. 95 PARKING BRAKE CALLIPER .298
3.3. 97 AUTOMATIC SLACK ADJUSTER .300
3.3.101 SPECIAL TOOLS 304
3.4 MAINTENANCE STANDARD .308
3.4. 1 BRAKES 309
3.5 TROUBLE SHOOTING .310
3.5. 1 REAR DIFFERENTIAL 311
3.5. 2 SERVICE BRAKE .312
3.5. 4 PARKING BRAKE .314
4.0 AIR SYSTEM .318
4.1 STRUCTURE AND FUNCTION .318
4.1. 1 AIR SYSTEM (～65395/～60890) 319
4.1. 2 AIR SYSTEM (65396～/60891～) 320
4.1. 3 AIR CIRCUIT DIAGRAM (311001～311015/301001～301017) .323
4.1.4-1 AIR CIRCUIT DIAGRAM (HA-Ⅲ:313001～/303001～) .325
4.1. 5 AIR SUPPLY 326
4.1. 6 FRONT BRAKES (CIRCUIT 1) 327
4.1. 7 REAR BRAKES (CIRCUIT 2) .328
4.1. 8 PARKING BRAKE (CIRCUIT 3) .329
4.1. 9 OTHER AIR OPERATED SYSTEMS 330
4.1.11 GOVERNOR 331
4.1.12 SAFETY VALVE 332
4.1.13 MOISTURE REPELLENT INJECTOR .333
4.1.14 AUTOMATIC DRAIN VALVE .334
4.1.16 SINGLE CHECK VALVE 336
4.1.17 TEST CONNECTOR 337
4.1.18 LOW PRESSURE INDICATOR 338
4.1.19 FOUR-CIRCUIT PROTECTION VALVE .339
4.1.20 DUAL FOOT BRAKE VALVE .340
4.1.21 STOP LIGHT SWITCH .341
4.1.22 RELAY VALVE .342
4.1.24 PARKING BRAKE LOW PRESSURE VALVE 344
4.1.25 PARKING BRAKE CONTROL VALVE .345
4.1.27 MAIN BRAKE CHAMBER 347
4.1.28 PARKING BRAKE CHAMBER .348
4.1.29 QUICK RELEASE VALVE .349
4.1.30 PRESSURE PROTECTION VALVE .350
4.1.31 PRESSURE REDUCING VALVE .351
4.1.32 SOLENOID VALVE 352
4.1.34 AIR DRYER .354
4.2 TESTING AND ADJUSTING 356
4.2.1 STANDARD VALUES 357
4.3 DISASSEMBLY AND ASSEMBLY .358
4.3. 9 GOVERNOR 359
4.3.10 MOISTURE REPELLENT INJECTOR .360
4.3.11 SINGLE CHECK VALVE 361
4.3.12 FOUR CIRCUIT PROTECTION VALVE .362
4.3.13 PARKING BRAKE CONTROL VALVE .363
4.3.15 RELAY VALVE .365
4.3.16 MAIN BRAKE CHAMBER 366
4.3.17 QUICK RELEASE VALVE .367
4.3.18 SOLENOID VALVE 368
4.4 MAINTENANCE STANDARD .370
4.4. 1 GOVERNOR 371
4.4. 2 PRESSURE PROTECTION VALVE .372
4.4. 3 PRESSURE REDUCING VALVE .373
4.4. 4 LOW PRESSURE INDICATOR 374
4.5 TROUBLE SHOOTING .375
4.5. 1 DIAGRAM .376
5.0 HYDRAULIC SYSTEM .377
5.1 STRUCTURE AND FUNCTION .377
5.1. 1 HYDRAULIC SYSTEM 378
5.1. 2 HYDRAULIC CIRCUIT ARRANGEMENT .379
5.1. 3 HYDRAULIC CIRCUIT DIAGRAM .380
5.1. 4 HYDRAULIC RESERVOIR .381
5.1. 5 HYDRAULIC PUMP 382
5.1. 7 DEMAND VALVE 384
5.1. 8 STEERING CIUCUIT 385
5.1. 9 ORBITROL VALVE 386
5.1.10 STEERING VALVE 387
5.1.16 STEERING SYLINDER .393
5.1.17 EMERGENCY STEERING CIRCUIT 394
5.1.18 EMERGENCY STEERING PUMP .395
5.1.19 CONNECTING VALVE 396
5.1.20 FLOW INDICATOR VALVE 397
5.1.21 TIPPING CIRCUIT .398
5.1.22 TIP VALVE .399
5.2 TESTING AND ADJUSTING 400
5.2. 1 STANDARD VALUES .401
5.2. 2 MEASURING OIL LEVEL .402
5.2. 2 MEASURING OIL TEMPERATURE .402
5.2. 2 MEASURING PUMP DELIVERY .402
5.2. 3 TESTING STEERING SYSTEM .403
5.2. 4 TESTING TIP SYSTEM 404
5.3 DISASSEMBLY AND ASSEMBLY .405
5.3. 1 HYDRAULIC PUMP 406
5.3. 4 FILTER 409
5.3. 5 CONNECTING VALVE 410
5.3. 6 FLOW INDICATOR 411
5.3. 7 STEERING VALVE 412
5.3.34 ORBITROL VALVE 439
5.3.48 TIP VALVE .452
5.3.49 TIP CYLINDER 453
5.3.51 SPECIAL TOOLS .455
5.5 TROUBLE SHOOTING .456
5.5. 1 DIAGRAM .457
6.0 ELECTRICAL SYSTEM 462
6.1 STRUCTURE AND FUNCTION .463
6.1. 5 FUNCTION OF ELECTRICAL COMPONENTS .464
6.1. 8 FUNCTION OF MAJOR CIRCUITS 467
6.1.34 AUTOMATIC TRANSMISSION CIRCUIT 491
7.0 FRONT CHASSIS 492
7.1 STRUCTURE AND FUNCTION .492
7.1. 1 FRAME .493
7.1. 2 SUSPENSION 494
8.0 REAR CHASSIS .495
8.1 STRUCTURE AND FUNCTION .495
8.1. 1 FRAME .496
8.1. 2 ARTICULATION HINGE 497
8.1. 3 BODY 498
8.1. 4 TAIL GATE .499
8.2 TESTING AND ADJUSTING 500
8.2. 1 TURNING RING CLEARANCE 501
8.3 DISASSEMBLY AND ASSEMBLY .502
8.3. 1 GAS CYLINDER 503
8.3. 2 FILLING OF GAS CYLINDER .504
8.3. 3 BODY BUSHINGS .505
8.3. 4 TURNING RING 506
8.3. 5 ARTICULATION HINGE 507
9.0 ACCESSORIES 511
9.0. 1 FILLING INSTRUCTIONS FOR AIR CONDITION COOLING AGENT 512

DESCRIPTION:

Komatsu HA-250, HA-270 Dump Truck Repair Shop Manual SEBMHA250104  – PDF DOWNLOAD

FOREWORD
The Shop Manual is prepared as an aid in quality repairs by giving the service man an understanding of the dump truck, and showing him the correct way of perform repairs and make judgements. Make sure that you understand the manual and use it at every availably opportunity. The manual will also be a good help to office personal and other persons which are involved with the dump truck in one way or another.
HOW TO READ THE PAGE REFERENCE:
CHAPTER SECTION CONT.
The manual is divided into following sections:
STRUCTURE AND FUNCTION (-.1.0):
This section explains how the components are build and how they works.
TESTING AND ADJUSTING (-.2.0):
This section explains checks to be made before and after performing repairs as well as adjustments to be done at the completion of the checks and repairs.
DISASSEMBLY AND ASSEMBLY (-.3.0):
This section describes how to remove, install, disassemble, repair and assemble compo- nents, and the work order. Special tools are listed at the end of each chapter. The special tools are an excellent aid in the work shop. By using special tools, the job will be easier to perform and in some cases a special tool is required to carry out the work. List of all special tools for the complete truck are listed in the “Special Tool Guide”.
MAINTENANCE STANDARD (0.4,0):
This section gives the judgement standards when inspecting disassembled parts.
TROUBLE SHOOTING (-.5.0):
This section is an first aid when a fault is detected, before the practical searching starts. A skilled and trainned mechanic together with the Shop Manual is the best trouble shooter when a repair instruction is needed.

G.B 25/12/24