Komatsu Avance Plus WA450-3 Wheel Loader Shop Manual CEBM003602 – PDF

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Komatsu Avance Plus WA450-3 Wheel Loader Shop Manual CEBM003602 – PDF DOWNLOAD

FILE DETAILS:

Komatsu Avance Plus WA450-3 Wheel Loader Shop Manual CEBM003602 – PDF DOWNLOAD

Language : English
Pages : 854
Downloadable : Yes
File Type : PDF

IMAGES PREVIEW OF THE MANUAL:

TABLE OF CONTENTS:

Komatsu Avance Plus WA450-3 Wheel Loader Shop Manual CEBM003602 – PDF DOWNLOAD

• SERIAL NUMBERS         WA450-3MC – A31001 and up
• SERIAL NUMBERS          WA450-3MC – A35001 and up
                                              MATERIAL HANDLER

MAIN MENU 0
COVER 1
CONTENTS 2
00 FOREWORD 13
SAFETY 14
GENERAL 16
HOW TO READ THE SHOP MANUAL 17
HOISTING INSTRUCTIONS 18
COATING MATERIALS 19
STANDARD TIGHTENING TORQUE 21
ELECTRIC WIRE CODE 24
CONVERSION TABLES 25
01 GENERAL 31
SPECIFICATION DRAWING 32
SPECIFICATIONS 34
WEIGHT TABLE 36
PROPER SELECTION OF FUEL, COOLANT AND LUBRICANTS 37
10 STRUCTURE AND FUNCTION 44
POWER TRAIN 45
POWER TRAIN SYSTEM 46
TORQUE CONVERTER, TRANSMISSION PIPING 48
TRANSMISSION SYSTEM DIAGRAM 49
TRANSMISSION HYDRAULIC CIRCUIT DIAGRAM 50
TORQUE CONVERTER 51
TORQUE CONVERTER OIL FILTER 54
TRANSMISSION 55
FORWARD AND 1ST CLUTCH 58
REVERSE AND 2ND CLUTCH 58
3RD AND 4TH CLUTCH 59
FORWARD 1ST 60
FORWARD 2ND 61
FORWARD 3RD 62
FORWARD 4TH 63
REVERSE 1ST 64
TRANSMISSION CONTROL VALVE 65
UPPER VALVE 66
LOWER VALVE 67
TRANSMISSION SOLENOID VALVE 68
FLOW VALVE 70
ACCUMULATOR VALVE 71
TRANSMISSION OIL PRESSURE SYSTEM DIAGRAM 73
DIRECTIONAL SELECTOR VALVE 74
EMERGENCY MANUAL SPOOL 75
PRIORITY VALVE 75
TORQUE CONVERTER OUTLET PORT VALVE 77
PILOT REDUCING VALVE 78
PROPORTIONAL SOLENOID VALVE 79
TRANSMISSION SOLENOID VALVE 79
ELECTRONIC CONTROL MODULATION VALVE [ECMV] 80
PILOT OIL FILTER 83
DRIVE SHAFT 84
FRONT AXLE 85
REAR AXLE 86
DIFFERENTIAL 87
FRONT DIFFERENTIAL 87
REAR DIFFERENTIAL 88
TORQUE PROPORTIONING DIFFERENTIAL 90
LIMITED SLIP DIFFERENTIAL 91
FINAL DRIVE 94
AXLE MOUNT, CENTER HINGE PIN 95
STEERING PIPING 96
STEERING COLUMN 97
STEERING VALVE 98
OPERATION OF DEMAND VALVE 99
STEERING PILOT 102
OPERATION OF STEERING VALVE 105
STEERING RELIEF VALVE 108
SAFETY VALVE 110
STEERING CONTROL VALVE 112
CONNECTION BETWEEN HAND PUMP AND SLEEVE 114
STOP VALVE 116
GROUND DRIVEN STEERING PUMP 117
DIVERTER VALVE 118
OPERATION 119
BRAKE PIPING 121
BRAKE CIRCUIT DIAGRAM 122
BRAKE VALVE 123
RIGHT BRAKE VALVE 123
LEFT BRAKE VALVE 124
OPERATION 125
ACCUMULATOR CHARGE VALVE 128
ACCUMULATOR 132
SLACK ADJUSTER 133
BRAKE 135
PARKING BRAKE CONTROL 137
PARKING BRAKE 138
PARKING BRAKE SOLENOID VALVE 139
PARKING BRAKE VALVE 140
PARKING BRAKE EMERGENCY RELEASE SOLENOID VALVE 141
HYDRAULIC PIPING 142
WORK EQUIPMENT HYDRAULIC SYSTEM DIAGRAM 144
WORK EQUIPMENT HYDRAULIC CIRCUIT DIAGRAM 145
WORK EQUIPMENT LEVER LINKAGE 146
WORK EQUIPMENT LEVER LINKAGE 146
HYDRAULIC TANK 147
BREATHER 148
PPC VALVE 149
OPERATION OF PPC VALVE 150
FUNCTION OF PPC VALVE 151
PPC RELIEF VALVE 153
PPC VALVE ACCUMULATOR 154
CUT OFF VALVE 155
OPERATION 156
MAIN CONTROL VALVE – TWO SPOOL [1/2] 157
MAIN CONTROL VALVE [2/2] 158
MAIN CONTROL VALVE – THREE SPOOL [1/2] 159
MAIN CONTROL VALVE [2/2] 160
MAIN CONTROL VALVE 161
RELIEF VALVE 161
SAFETY SUCTION VALVE 162
SUCTION VALVE 163
FLOAT SELECTOR VALVE AND UNLOAD VALVE 164
BOOM AND BUCKET SPOOL HOLD POSITION 165
BOOM SPOOL AT RAISE POSITION 166
BOOM SPOOL AT LOWER POSITION 167
BOOM SPOOL AT FLOAT POSITION 168
BUCKET SPOOL AT DUMP POSITION 169
BUCKET SPOOL AT TILT POSITION 170
WORK EQUIPMENT LINKAGE 171
BUCKET 173
BUCKET POSITIONER AND BOOM KICK OUT 174
BUCKET POSITIONER 175
BOOM KICK OUT 175
BOOM PROXIMITY SWITCH 176
BUCKET PROXIMITY SWITCH 178
ROPS CAB 180
HEATER AND DEFROSTER 181
AIR CONDITIONER 182
ELECTRIC CIRCUIT DIAGRAM 183
MACHINE MONITOR SYSTEM 184
MAIN MONITOR 185
MAIN MONITOR DISPLAY FUNCTION 186
PREHEATING OUTPUT FUNCTION 187
TROUBLE DATA DISPLAY MODE 188
MAINTENANCE MONITOR 189
MAINTENANCE MONITOR DISPLAY FUNCTION 190
TRANSMISSION AUTO SHIFT 191
SYSTEM STRUCTURE DIAGRAM 191
SHIFT CONTROL SYSTEM FUNCTION 192
SAFETY FUNCTION 194
TROUBLESHOOTING 194
TRANSMISSION CONTROLLER 195
LOAD METER SYSTEM 196
ADJUSTING LOAD MEASUREMENT POINTS 197
CALIBRATION, ADJUSTING 0 POINT 198
MEASURING 199
SETTING TARGET AMOUNT IN REMAIN MODE 202
PRINTING DATA 203
DELETING DATA FROM STORAGE DEVICE 204
SETTING TIME ON CLOCK 205
REPLACING PRINTER PAPER 206
TROUBLESHOOTING FUNCTION 208
SPARE PARTS 208
ECSS 209
SENSORS 213
ENGINE OIL LEVEL SENSOR 214
RADIATOR COOLANT LEVEL SENSOR 214
ENGINE OIL PRESSURE SENSOR 215
ENGINE WATER TEMPERATURE SENSOR 215
TORQUE CONVERTER OIL TEMPERATURE SENSOR 216
ENGINE SPEED SENSOR 216
FUEL LEVEL SENSOR 217
ENGINE START CIRCUIT 218
ENGINE STOP CIRCUIT 219
PREHEATING CIRCUIT 221
ELECTRIC TRANSMISSION CONTROL 223
COMBINATION SWITCH 224
KICK DOWN, HOLD SWITCH 226
KICK DOWN CIRCUIT DIAGRAM 227
TRANSMISSION CUT OFF SWITCH 233
TRANSMISSION CUT OFF FUNCTION 234
ELECTRIC PARKING BRAKE CONTROL 237
EMERGENCY BRAKE SWITCH 239
PARKING BRAKE SAFETY RELAY NEUTRALIZER RELAY 239
OPERATION 240
PARKING BRAKE SWITCH OFF 244
PARKING BRAKE SWITCH ON 247
WHEN MAIN BRAKE OIL PRESSURE DROPS 247
PARKING BRAKE EMERGENCY RELEASE 249
FUNCTION OF PARKING BRAKE NEUTRALIZER RELAY 250
20 TESTING AND ADJUSTING 251
STANDARD VALUE TABLES FOR ENGINE 252
STANDARD VALUE FOR CHASSIS 253
STANDARD VALUE TABLES FOR ELECTRICAL PARTS 256
TESTING AND ADJUSTING 259
TOOLS FOR TESTING AND ADJUSTING 260
ENGINE SPEED 261
INTAKE AIR PRESSURE 262
VALVE CLEARANCE 263
EXHAUST COLOR 264
EXHAUST TEMPERATURE 265
BLOW BY PRESSURE 266
COMPRESSION PRESSURE 267
ENGINE OIL PRESSURE 268
FUEL INJECTION TIMING 269
ENGINE STOP MOTOR CABLE 272
FAN BELT TENSION 274
ACCELERATOR PEDAL 275
SPEED CONTROL LEVER 277
STALL SPEED 278
POWER TRAIN OIL PRESSURE 280
EMERGENCY MANUAL SPOOL 281
TIRE AND WHEEL 282
STEERING WHEEL 283
STEERING CONTROL 285
STEERING OIL PRESSURE 286
BRAKE PEDAL 287
BRAKE OIL PRESSURE 288
BRAKE PERFORMANCE 289
BRAKE DISC WEAR 290
BLEED AIR FROM BRAKE SYSTEM 291
ACCUMULATOR CHARGE PRESSURE 292
PARKING BRAKE PERFORMANCE 293
MANUAL RELEASE OF PARKING BRAKE 294
WEAR OF PARKING BRAKE DISC 295
WORK EQUIPMENT CONTROL LEVER 296
WORK EQUIPMENT PRESSURE 298
WORK EQUIPMENT 302
BUCKET POSITIONER 304
BOOM KICK OUT 305
LOAD METER 307
MAIN MONITOR 309
FUEL LEVEL SENSOR 310
TROUBLESHOOTING 311
POINTS TO REMEMBER WHEN TROUBLESHOOTING 312
SEQUENCE OF EVENTS IN TROUBLESHOOTING 313
POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE 314
CHECKS BEFORE TROUBLESHOOTING 322
METHOD OF USING CHARTS 323
CONNECTOR TYPES AND MOUNTING LOCATIONS 330
CONNECTION TABLE FOR CONNECTOR PIN NUMBERS 334
TROUBLESHOOTING OF ENGINE SYSTEM S MODE 344
S-1 STARTING PERFORMANCE IS POOR 345
S-2 ENGINE DOES NOT START 346
S-3 ENGINE DOES NOT PICK UP SMOOTHLY 349
S-4 ENGINE STOPS DURING OPERATIONS 350
S-5 ENGINE DOES NOT ROTATE SMOOTHLY 351
S-6 ENGINE LACKS POWER 352
S-7 EXHAUST GAS IS BLACK 353
S-8 OIL CONSUMPTION IS EXCESSIVE OR EXHAUST GAS IS BLUE 354
S-9 OIL BECOMES CONTAMINATED QUICKLY 355
S-10 FUEL CONSUMPTION IS EXCESSIVE 356
S-11 OIL IS IN COOLANT, COOLANT SPURTS OR COOLANT LEVEL GOES DOWN 357
S-12 OIL PRESSURE LAMP LIGHTS UP 358
S-13 OIL LEVEL RISES 359
S-14 COOLANT TEMPERATURE BECOMES TOO HIGH 360
S-15 ABNORMAL NOISE IS MADE 361
S-16 VIBRATION IS EXCESSIVE 362
TROUBLESHOOTING OF MAIN MONITOR SYSTEM M MODE 363
FAILURE CODE 364
M-1 MAIN MONITOR DOES NOT WORK 366
M-2 WHEN START SWITCH IS TURNED ON AND ENGINE IS STARTED, ALL LAMPS STAY LIT 367
M-3 SPEEDOMETER DISPLAY DOES NOT WORK PROPERLY 368
M-4 ABNORMALITY IN SHIFT INDICATOR 369
M-5 HIGH BEAM DOES NOT LIGHT UP 371
M-6 TURN SIGNAL DISPLAY DOES NOT LIGHT UP 372
M-7 ABNORMALITY IN PARKING DISPLAY 373
M-8 ABNORMALITY IN PREHEATING SYSTEM 374
M-9 TAIL LIGHTS DO NOT ILLUMINATE 376
M-10 ABNORMALITY IN FRONT WORKING LAMP 377
M-11 ABNORMALITY IN REAR WORKING LAMP 379
M-12 ABNORMALITY IN TRANSMISSION CUT OFF 380
M-13 ABNORMALITY IN PARKING BRAKE DRAGGING WARNING 381
M-14 WHEN PARKING BRAKE DRAG WARNING IS GIVEN, BUZZER AND CAUTION LAMP ARE ACTUATED CONTINUOUSLY OR THEY ARE NOT ACTUATED 382
M-15 ABNORMALITY IN BUZZER 383
M-16 CONDITIONER OF MONITOR SWITCHES IS NOT STORED IN MEMORY 384
M-17 ABNORMALITY IN FAILURE DISPLAY MODE 385
M-18 ABNORMALITY IN GROUND DRIVEN STEERING NORMAL DISPLAY 386
M-19 ABNORMALITY IN GROUND DRIVEN STEERING ACTUATION DISPLAY 387
M-20 ABNORMALITY IN ECSS SYSTEM 388
TROUBLESHOOTING OF MAINTENANCE MONITOR SYSTEM K MODE 389
K-1 WHEN START SWITCH IS TURNED ON, ALL LAMPS ON MAINTENANCE MONITOR DO NOT LIGHT UP FOR 3 SECONDS, MAINTENANCE MONITOR DOE 390
K-2 WHEN START SWITCH IS TURNED ON, ALL LAMPS ON MAINTENANCE MONITOR ILLUMINATE, BUT DO NOT GO OUT 390
K-3 WHEN ENGINE IS STARTED IMMEDIATELY AFTER START SWITCH IS TURNED ON, ALL LAMPS ON MAINTENANCE MONITOR DO NOT GO OUT 391
K-4 WHEN START SWITCH IS TURNED ON (ENGINE STOPPED), CHECK ITEMS FLASH 392
K-5 WHEN START SWITCH IS TURNED ON, ENGINE STARTED, CAUTION ITEMS FLASH 393
K-6 CAUTION ITEMS ARE FLASHING, BUT ALARM BUZZER DOES NOT SOUND 397
K-7 THERE IS NO ABNORMALITY IN MONITOR DISPLAY, BUT ALARM BUZZER SOUNDS 398
K-8 CHECK OR CAUTION ITEMS ARE FLASHING, BUT CHECK OR CAUTION LAMP DOES NOT LIGHT UP 399
K-9 THERE IS NO ABNORMALITY IN MAINTENANCE MONITOR DISPLAY, BUT CHECK OR CAUTION LAMP LIGHTS UP 400
K-10 NIGHT LIGHTING DOES NOT LIGHT UP WHEN LAMP SWITCH IS TURNED ON 401
K-11 NIGHT LIGHTING LIGHTS UP EVEN WHEN LAMP SWITCH IS OFF 402
K-12 SERVICE METER DOES NOT WORK 403
K-13 SERVICE METER IS RUNNING EVEN WHEN ENGINE IS STOPPED 403
K-14 ABNORMALITY IN GAUGE ITEMS 404
TROUBLESHOOTING OF ELECTRICAL SYSTEM E MODE 407
E-1 ENGINE DOES NOT START 409
E-2 ENGINE DOES NOT STOP 412
E-3 ENGINE STOPS WHEN MACHINE IS TRAVELING 413
E-4 PARKING BRAKE DOES NOT WORK 414
E-5 PARKING BRAKE IS APPLIED WHEN MACHINE IS TRAVELING 415
E-6 PARKING BRAKE IS RELEASED WHEN STARTING SWITCH IS TURNED ON 416
E-7 TRANSMISSION DOES NOT CHANGE TO NEUTRAL WHEN PARKING BRAKE IS APPLIED 416
TROUBLESHOOTING OF TRANSMISSION CONTROLLER SYSTEM A MODE 417
FUNCTION 418
WHEN CARRYING OUT TROUBLESHOOTING 418
FAILURE CODE 418
TABLE OF FAILURE MODES AND CAUSES 419
A-1 FAILURE CODE [10] MODULATION VALVE SOLENOID SYSTEM 420
A-2 FAILURE CODE [11] SHORT CIRCUIT IN POWER SUPPLY FOR MODULATION VALVE SOLENOID SYSTEM 421
A-3 FAILURE CODE [12] F SOLENOID SIGNAL SYSTEM 422
A-4 FAILURE CODE [13] R SOLENOID SIGNAL SYSTEM 423
A-5 FAILURE CODE [14] ABNORMALITY IN HI LO SOLENOID SIGNAL SYSTEM 424
A-6 FAILURE CODE [16] ABNORMALITY IN SPEED SOLENOID SIGNAL SYSTEM 425
A-7 FAILURE CODE [17] BRAKE OUTPUT SIGNAL SYSTEM 426
A-8 FAILURE CODE [20] ABNORMALITY IN DIRECTIONAL LEVER SIGNAL SYSTEM 427
A-9 FAILURE CODE [21] ABNORMALITY IN SPEED LEVER SIGNAL SYSTEM 428
A-10 FAILURE CODE [22] ABNORMALITY IN TRAVEL SPEED SIGNAL SYSTEM 429
A-11 FAILURE CODE [23] ABNORMALITY IN ENGINE SPEED SIGNAL 430
A-12 HOLD SWITCH SYSTEM 431
A-13 KICK DOWN SWITCH SYSTEM 432
A-14 TRANSMISSION CUT OFF SIGNAL SYSTEM 433
A-15 NEUTRALIZER RELAY SIGNAL SYSTEM 434
A-16 BUZZER SIGNAL SYSTEM 435
A-17 NETWORK SIGNAL SYSTEM 436
A-18 CONTROLLER POWER SOURCE SYSTEM 437
TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM T MODE 438
T-1 MACHINE DOES NOT MOVE 439
T-2 TRAVEL SPEED IS SLOW, THRUSTING POWER IS WEAK, LACKS POWER ON SLOPES 440
T-3 EXCESIVE SHOCK WHEN STARTING MACHINE OR SHIFTING GEARS 441
T-4 EXCESSIVE TIME LAG WHEN STARTING MACHINE OR SHIFTING GEAR 442
T-5 TORQUE CONVERTER OIL TEMPERATURE IS HIGH 443
T-6 STEERING DOES NOT TURN 444
T-7 STEERING WHEEL IS HEAVY 445
T-8 STEERING WHEEL SHAKES OR JERKS 446
T-9 MACHINE DEVIATES TO ONE SIDE WHEN TRAVELING 446
T-10 TURNING RADIUS IS DIFFERENT BETWEEN LEFT AND RIGHT 446
T-11 BRAKES DO NOT WORK OR BRAKING EFFECT IS POOR 447
T-12 BRAKES ARE NOT RELEASED OR BRAKES DRAG 448
T-13 PARKING BRAKE IS NOT RELEASED OR BRAKE DRAGS 449
T-14 BOOM DOES NOT RISE 450
T-15 BOOM MOVEMENT IS SLOW OR BOOM LACKS LIFTING POWER 451
T-16 WHEN BOOM IS RAISED, IT MOVES SLOWLY AT A CERTAIN HEIGHT 452
T-17 BUCKET CANNOT BE PUSHED WITH BOOM CYLINDERS 452
T-18 EXCESSIVE HYDRAULIC DRIFT OF BOOM 452
T-19 BOOM SHAKES DURING OPERATION 452
T-20 BOOM DROPS MOMENTARILY WHEN CONTROL LEVER IS OPERATED FROM HOLD TO RAISE 452
T-21 BUCKET DOES NOT TILT BACK 453
T-22 BUCKET MOVEMENT IS SLOW OR TILT BACK LACKS POWER 454
T-23 BUCKET MOVEMENT BECOMES SLOW DURING TILT BACK OPERATION 455
T-24 BUCKET CANNOT BE PUSHED WITH BUCKET CYLINDER 455
T-25 EXCESSIVE HYDRAULIC DRIFT OF BUCKET 455
T-26 BUCKET SHAKES DURING LOADING OPERATION 455
T-27 BUCKET DUMPS MOMENTARILY WHEN CONTROL LEVER IS OPERATED FROM HOLD TO TILT 455
T-28 BOOM, BUCKET CONTROL LEVERS ARE HEAVY OR DO NOT MOVE SMOOTHLY 456
TROUBLESHOOTING OF ECSS E MODE 457
JUDGEMENT TABLE FOR CONTROLLER ELECTRICAL SYSTEM 458
D-1 ECSS DOES NOT WORK 459
D-2 ECSS CANNOT BE CANCELED 464
D-3 OUTPUT IS TURNED ON, TRAVEL SPEED DOES NOT BECOME 5 KM/H (DEVIATES AT AROUND 5 KM/H) 465
D-4 OUTPUT IS TURNED ON WHEN TRANSMISSION IS IN 1ST 465
D-5 OUTPUT IS TURNED ON WHEN TRANSMISSION IS IN 4TH 466
D-6 CONTROLLER LED CODE IS NOT DISPLAYED 467
D-7 ECSS IS ABNORMAL, BUT MAIN MONITOR DOES NOT GIVE ABNORMALITY DISPLAY 467
30 DISASSEMBLY AND ASSEMBLY 468
HOW TO USE THIS MANUAL 472
When removing or installing unit assemblies 472
PRECAUTIONS DURING OPERATION 473
Precautions when carrying out removal work 473
Precautions when carrying out installation work 474
Precautions when completing the operations 475
SPECIAL TOOL LIST 476
STARTING MOTOR 478
Removal 478
Installation 478
ALTERNATOR 479
Removal 479
Installation 479
ENGINE COMPONENTS 480
RADIATOR 481
Removal 481
Installation 484
ENGINE 485
Removal 5
Installation 490
TORQUE CONVERTER, TRANSMISSION 493
Removal 493
Installation 503
TORQUE CONVERTER 507
Disassembly 507
Assembly 509
TRANSMISSION 513
Disassembly 513
Torque Converter 515
Transmission 517
Assembly 520
TRANSMISSION CLUTCH PACK 527
Disassembly 527
FORWARD, 1st Clutch Assembly 527
REVERSE, 2ND CLUTCH ASSEMBLY 530
3RD, 4TH CLUTCH ASSEMBLY 533
Assembly 537
FORWARD, 1ST CLUTCH ASSEMBLY 537
REVERSE, 2ND CLUTCH ASSEMBLY 541
3RD, 4TH CLUTCH ASSEMBLY 545
PARKING BRAKE 551
disASSEMBLY 551
Assembly 553
TRANSMISSION CONTROL VALVE 557
removal 557
Installation 560
Disassembly 561
Assembly 566
TRANSMISSION ACCUMULATOR VALVE 573
Disassembly 573
Assembly 574
DRIVE SHAFT ASSEMBLY 575
Disassembly 575
ASSEMBLY 577
FRONT AXLE 579
Removal 579
Installation 581
REAR AXLE 583
REMOVAL 583
Installation 587
FRONT DIFFERENTIAL 591
REMOVAL 591
Installation 594
REAR DIFFERENTIAL 597
Removal 597
Installation 600
DIFFERENTIAL 603
Disassembly 603
Assembly 607
FINAL DRIVE 617
Disassembly 617
Assembly 620
CENTER HINGE PIN 625
Removal 625
Installation 636
Upper hinge 637
Connection of frame 638
Lower hinge 638
Upper hinge 640
STEERING VALVE (ORIBITROL) 643
Removal 643
Installation 645
Disassembly 646
Rotor 646
Control Side 647
Assembly 649
Control Side 649
Rotor 651
STEERING DEMAND VALVE 655
Removal 655
Installation 656
Disassembly 657
Assembly 662
STEERING AND SWITCH PUMP 667
Removal 667
Installation 671
STEERING CYLINDER 673
Removal 673
Installation 674
BRAKE VALVE 675
Removal 675
Installation 677
RIGHT BRAKE VALVE (TANDEM) 679
Disassembly 679
Assembly 680
LEFT BRAKE VALVE (SINGLE) 683
Disassembly 683
Assembly 684
SLACK ADJUSTER 685
Removal 685
Installation 686
Disassembly 687
Assembly 688
WHEEL BRAKE 689
Disassembly 689
ASSEMBLY 695
PARKING BRAKE DISC 705
Removal 705
Installation 707
ACCUMULATOR CHARGE VALVE 708
Removal 708
Installation 708
Disassembly 709
assembly 711
HYDRAULIC TANK 713
Removal 713
Installation 715
WORK EQUIPMENT, PPC PUMP ASSEMBLY 717
Removal 717
Installation 721
PPC VALVE ASSEMBLY 723
Removal 723
INSTALLATION 725
Disassembly 726
Assembly 727
MAIN CONTROL VALVE 729
Removal 729
INSTALLATION 732
Disassembly (2-spool version) 733
Hydraulic Lines 734
Valves 734
Spools 734
Assembly (2-Spool Version) 735
Spools 736
Valves 736
Assembly (2-Spool Version) 737
Hydraulic Lines 738
Disassembly (3-spool version; Hydraulic Lines) 739
Hydraulic Lines 740
Valves 742
Spools 742
Assembly (3-spool version; VALVES, SPOOLS) 745
Spools 746
Valves 746
Assembly (3-spool version; VALVES, SPOOLS) 747
assembly (3-spool version; Hydraulic Lines) 749
Hydraulic Lines 750
DUMP CYLINDER 751
Removal 751
INSTALLATION 753
LIFT CYLINDER 755
Removal 755
INSTALLATION 757
HYDRAULIC CYLINDERS 759
Disassembly 759
Assembly 762
WORK EQUIPMENT 767
Removal 767
INSTALLATION 771
Bucket and bucket link 771
Dump cylinder 771
Lift cylinder 771
Lift arm, bellcrank, bucket link 771
Bellcrank, bucket link 772
COUNTERWEIGHT 773
Removal 773
INSTALLATION 774
FUEL TANK 775
Removal 775
INSTALLATION 777
CAB ASSEMBLY 779
Removal 779
INSTALLATION 780
MAIN MONITOR 781
Removal 781
Installation 782
MAINTENANCE MONITOR 783
Removal 783
INSTALLATION 783
AIR CONDITIONER UNIT 785
Removal 785
INSTALLATION 791
AIR CONDITIONER CONDENSER 793
Removal 793
INSTALLATION 795
RECEIVER-DRIER 797
Removal 797
INSTALLATION 798
AIR CONDITIONER COMPRESSOR 799
Removal 799
INSTALLATION 800
40 MAINTENANCE STANDARD 802
ENGINE AND TRANSMISSION MOUNT 803
TORQUE CONVERTER 804
TRANSMISSION 805
TRANSMISSION 806
FORWARD, 1ST CLUTCH 807
REVERSE, 2ND CLUTCH 808
3RD, 4TH CLUTCH 809
TRANSMISSION VALVES 810
UPPER VALVE 810
LOWER VALVE 811
FLOW VALVE 812
ACCUMULATOR VALVE 813
DRIVE SHAFTS 814
AXLE MOUNT 815
FRONT AXLE 816
REAR AXLE 817
DIFFERENTIAL 819
LIMITED SLIP DIFFERENTIAL 821
FINAL DRIVE 823
STEERING COLUMN 824
STEERING VALVE 825
STEERING CYLINDER MOUNT 826
SLACK ADJUSTER 827
LEFT BRAKE VALVE 828
RIGHT BRAKE VALVE 829
BRAKE 830
PARKING BRAKE 831
TORQUE CONVERTER, TRANSMISSION PUMP 832
STEERING, SWITCH PUMP 833
EQUIPMENT, PPC PUMP 834
2 SPOOL CONTROL VALVE 835
3 SPOOL CONTROL VALVE 837
PPC VALVE 839
CUT OFF VALVE 840
CENTER HINGE PIN 841
WORK EQUIPMENT LINKAGE 843
BOOM CYLINDER 845
BUCKET CYLINDER 846
STEERING CYLINDER 847
BUCKET 848
BUCKET POSITIONER AND BOOM KICK OUT 849
90 OTHERS 850
ELECTRICAL CIRCUIT DIAGRAM (1 OF 4) 851
ELECTRICAL CIRCUIT DIAGRAM (2 OF 4) 852
ELECTRICAL CIRCUIT DIAGRAM (3 OF 4) 853
ELECTRICAL CIRCUIT DIAGRAM (4 OF 4) 854

DESCRIPTION:

Komatsu Avance Plus WA450-3 Wheel Loader Shop Manual CEBM003602 – PDF DOWNLOAD

• SERIAL NUMBERS         WA450-3MC – A31001 and up
• SERIAL NUMBERS          WA450-3MC – A35001 and up
                                              MATERIAL HANDLER

GENERAL:
This shop manual has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate
understanding of the product and by showing him the correct way to perform repairs and make judgements. Make sure
you understand the contents of this manual and use it to full effect at every opportunity.
This shop manual mainly contains the necessary technical information for operations performed in a service workshop.
For ease of understanding, the manual is divided into the following sections. These sections are further divided into each
main group of components.
GENERAL
This section lists the general machine dimensions, performance specifications, component weights, and fuel, coolant
and lubricant specification charts.
STRUCTURE AND FUNCTION
This section explains the structure and function of each component. It serves not only to give an understanding of the
structure, but also serves as reference material for troubleshooting.
TESTING, ADJUSTING AND TROUBLESHOOTING
This section explains checks to be made before and after performing repairs, as well as adjustments to be made at
completion of the checks and repairs. Troubleshooting charts correlating “Problems” to “Causes” are also included
in this section.
DISASSEMBLY AND ASSEMBLY
This section explains the order to be followed when removing, installing, disassembling or assembling each
component, as well as precautions to be taken for these operations.
MAINTENANCE STANDARD
This section gives the judgement standards when inspecting disassembled parts.
NOTICE

G.B  16/12/24