Komatsu Backhoe Loader WB146PS Repair Service Manual
Complete service repair manual with Electrical Wiring Diagrams for Komatsu Backhoe Loader WB146PS, with all the technical information to maintain, diagnose, repair, and rebuild like professional mechanics.
Komatsu Backhoe Loader WB146PS-5 workshop service repair manual includes:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on repair procedure information
* Numbered instructions guide you through every repair procedure step by step.
* Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.
* Notes, cautions and warnings throughout each chapter pinpoint critical information.
* Bold figure number help you quickly match illustrations with instructions.
* Detailed illustrations, drawings and photos guide you through every procedure.
* Enlarged inset helps you identify and examine parts in detail.
CEAM016605 - Backhoe Loader WB146-5, WB146PS-5 Operation & Maintenance Manual.pdf
CEBM018501 - Backhoe Loader WB146PS-5 Shop Manual.pdf
PRODUCT DETAILS:
Total Pages: 821 pages
File Format: PDF (Internal Links, Bookmarked, Table of Contents, Searchable, Printable, high quality)
Language: English
TABLE OF CONTENTS
CEAM016605 - Backhoe Loader WB146-5, WB146PS-5 Operation & Maintenance Manual....1
CEBM018501 - Backhoe Loader WB146PS-5 Shop Manual....259
CONTENTS....260
SAFETY....267
SAFETY NOTICE....267
IMPORTANT SAFETY NOTICE....267
GENERAL PRECAUTIONS....267
PREPARATIONS FOR WORK....267
PRECAUTIONS DURING WORK....267
GENERAL....269
HOW TO READ THE SHOP MANUAL....270
VOLUMES....270
DISTRIBUTION AND UPDATING....270
FILING METHOD....270
REVISED EDITION MARK....270
REVISIONS....270
SYMBOLS....270
HOISTING INSTRUCTIONS....271
HOISTING....271
WIRE ROPES....271
EXPLANATION OF TERMS FOR MAINTENANCE STANDARD....272
COATING MATERIALS....274
STANDARD TIGHTENING TORQUE....276
STANDARD TIGHTENING TORQUE OF BOLTS AND NUTS....276
TIGHTENING TORQUE OF HOSE NUTS....277
TIGHTENING TORQUE OF SPLIT FLANGE BOLTS....277
TIGHTENING TORQUE FOR FLARED NUTS....277
TABLE OF TIGHTENING TORQUES FOR O-RING BOSS PIPING JOINTS....278
TABLE OF TIGHTENING TORQUES FOR O-RING BOSS PLUGS....278
TIGHTENING TORQUE TABLE FOR HOSES (TAPER SEAL TYPE AND FACE SEAL TYPE)....278
ELECTRIC WIRE CODE....279
CLASSIFICATION BY THICKNESS....279
CLASSIFICATION BY COLOR AND CODE....279
CONNECTING PUSH-PULL TYPE COUPLER....280
CONVERSION TABLES....283
METHOD OF USING THE CONVERSION TABLE....283
SPECIFICATION DRAWING....290
SPECIFICATIONS....290
MACHINE DIMENSIONS AND WEIGHTS....290
BACKHOE ARM....291
STANDARD ARM....291
TELESCOPIC (RETRACTED)....292
TELESCOPIC ARM (EXTENDED)....293
MACHINE SYSTEMS SPECIFICATIONS....294
ENGINE....294
ELECTRICAL SYSTEM....294
SERVICE REFILL CAPACITIES....294
TRANSMISSION....295
TOTAL MASS....295
LOADER....295
BACKHOE....295
TIRE PRESSURE....295
WEIGHT TABLE....296
LIFTING THE MACHINE....297
LIFTING POSITION MARKS....297
LIFTING PROCEDURE....298
FUEL, COOLANT, AND LUBRICANTS....300
PROPER SELECTION ACCORDING TO THE AMBIENT TEMPERATURE....300
GREASE....301
FUEL REMARKS....301
HOMOLOGATED (HEES) SYNTHETIC LUBRICANTS....302
LUBRICATION DIAGRAMS....303
GENERAL VIEW....303
POWER TRAIN....308
DESCRIPTION....308
POWER FLOW....308
TRANSMISSION DIAGRAM....310
TRANSMISSION....311
COMPLETE ASSEMBLY....311
VALVE BODY....313
CLUTCH PACKS....314
FORWARD AND REVERSE PACK....314
DRIVE SHAFT PACK....314
DRIVEN GEAR SHAFT PACK....315
4WD DRIVEN SHAFT PACK....315
FRONT AXLE....316
COMPLETE ASSEMBLY....316
DIFFERENTIAL....317
PLANETARY....318
REAR AXLE....319
COMPLETE ASSEMBLY....319
DIFFERENTIAL....320
FINAL REDUCTION GEARS....321
WHEEL BRAKES....322
DIFFERENTIAL LOCK....323
HYDRAULIC PUMP....324
MAIN PUMP....325
FUNCTION....327
STRUCTURE....327
OPERATION....327
DELIVERY CONTROL VALVE....329
LS VALVE FUNCTION....331
PC VALVE FUNCTION....331
PC VALVE OPERATION....332
MAIN CONTROL VALVE....335
10-SPOOL CONTROL VALVE....335
CLSS....341
DESCRIPTION....341
CHARACTERISTICS....341
STRUCTURE....341
OPERATING PRINCIPLES....342
PUMPING PLATE CONTROL ANGLE....342
PRESSURE COMPENSATION CONTROL....343
MAIN CONTROL VALVE....344
UNLOADING VALVE....345
LS PRESSURE....348
LS BYPASS PLUG....350
PRESSURE COMPENSATION....351
PRESSURE COMPENSATION VALVE....352
PRIORITY VALVE....353
PPC REDUCING VALVE....354
STEERING UNIT....357
TECHNICAL DATA....357
OPERATION....357
PPC VALVES....358
STANDARD VALVE....358
OPERATION....360
PPC VALVE (FLOAT + RETURN TO DIG)....364
OPERATION....366
OUTRIGGER....370
OPERATION....371
BACKHOE....374
LEFT VALVE....374
RIGHT VALVE....375
SOLENOID VALVE....376
HYDRAULIC CONTROLS WITHOUT MULTI-PURPOSE BUCKET....376
HYDRAULIC CONTROLS WITH MULTI-PURPOSE BUCKET....377
SAFETY VALVES....378
BUCKET RAISE....378
BUCKET DUMP....379
BOOM....380
ARM....381
LOADER CYLINDERS....382
BOOM....382
CHARACTERISTICS....382
BUCKET....383
CHARACTERISTICS....383
MULTI-PURPOSE (MP) BUCKET....384
CHARACTERISTICS....384
BACKHOE CYLINDERS....385
BOOM....385
CHARACTERISTICS....385
ARM....386
CHARACTERISTICS....386
BUCKET....387
CHARACTERISTICS....387
TELESCOPIC ARM CYLINDER....388
CHARACTERISTICS....388
SWING....389
CHARACTERISTICS....389
OUTRIGGER....390
CHARACTERISTICS....390
WORK EQUIPMENT....392
LOADER....392
BACKHOE....394
AIR CONDITIONING....397
STANDARD VALUE TABLE....401
ENGINE....401
CHASSIS....402
SPECIAL TOOLS....409
ENGINE SPEED....410
ENGINE WITH LOAD....410
MACHINE IN POWER MODE AT MIN....410
WITH CONVERTER STALLED....410
CONVERTER STALLED AND HYDRAULIC PUMP UNDER LOAD....410
ANALYSIS....411
VALVE CLEARANCE....411
AIR CONDITIONER COMPRESSOR BELT TENSION....412
BLEED AIR FROM CIRCUITS....413
BLEED AIR FROM CYLINDERS....413
BLEED AIR FROM BRAKING CIRCUIT....413
RELEASING RESIDUAL PRESSURE....413
ACCELERATOR PEDAL AND LEVER....414
ACCELERATOR PEDAL TRAVEL....414
ACCELERATOR LEVER TRAVEL....415
BRAKE SYSTEM....416
CONTROL....416
ADJUSTMENT....416
CHECKS....417
LEAKAGE CHECKS....417
INDIVIDUAL PUMP CHECK....418
BRAKE GROUP LEAKAGE....419
PARKING BRAKE ADJUSTMENT....420
HYDRAULIC CIRCUIT....421
INTRODUCTION....421
MAIN CONTROL VALVE....422
RELIEF VALVES....423
TESTING....423
UNLOADING VALVE....423
MAIN RELIEF VALVE....423
SECONDARY VALVES....423
SETTING RELIEF VALVES....426
MAIN RELIEF VALVE....426
CIRCUIT RELIEF VALVES....426
ARM IN, LOADER CURL, BACKHOE BUCKET CURL, BOOM RAISE, AND MP BUCKET....426
SWING, LOADER DUMP, HAMMER, AND BOOM RAISE....427
LS DIFFERENTIAL PRESSURE....428
CONTROL....428
ADJUSTMENT....428
PPC SUPPLY PRESSURE....429
CHECK....429
ADJUSTMENT....429
PC VALVE....430
ADJUSTMENT....430
STEERING CONTROL SYSTEM....431
CONTROL....431
SETTING....431
STEERING CYLINDER....432
POWER TRAIN GROUP....433
CONVERTER OIL PRESSURE....433
CLUTCH ENGAGEMENT PRESSURE....433
SUPPLY PRESSURE....434
TRANSMISSION CLUTCH FUNCTION....435
MACHINE PREPARATION....435
CONTROL....435
HYDRAULIC DRIFT....436
LOADER....436
BOOM CIRCUIT....436
BUCKET CIRCUIT....437
BACKHOE....437
BOOM CIRCUIT....438
ARM CIRCUIT....438
BUCKET CIRCUIT....439
OUTRIGGERS CIRCUIT - WITHOUT LOCK VALVES....440
AIR CONDITIONING....441
WORK TEMPERATURE....441
UNIT CHECK....441
EMPTYING THE AIR CONDITIONING UNIT....442
TROUBLESHOOTING GUIDE....443
FRONT AXLE....443
REAR AXLE....448
TRANSMISSION....453
FUSES AND RELAYS....456
FUSE AND RELAY PANEL LOCATION....456
FUSE AND RELAY PANEL LAYOUT....457
FUSES....457
RELAYS....459
HEATING AND AIR CONDITIONING FUSES AND RELAYS....460
FUSES....460
RELAYS....460
HOW TO USE THIS MANUAL....467
REMOVAL AND INSTALLATION OF COMPONENTS....467
REMOVAL....467
INSTALLATION....467
OVERHAUL OF COMPONENTS....468
DISASSEMBLY PROCEDURES....468
ASSEMBLY PROCEDURES....468
PRECAUTIONS FOR WORK....469
SPECIAL TOOL LIST....471
CONNECTOR REPAIR PROCEDURES....474
CONTACT TERMINAL REMOVAL (HD30 TYPE)....474
CRIMPING CONTACT TERMINAL (HD30 TYPE)....475
INSERTION OF CONTACT TERMINAL (HD30 TYPE)....476
CONTACT TERMINAL REMOVAL (DT TYPE)....477
CRIMPING CONTACT TERMINAL (DT TYPE)....478
INSERTION OF CONTACT TERMINAL (DT TYPE)....479
STRIPPING INSULATION....480
ENGINE HOOD....481
REMOVAL....481
INSTALLATION....482
FRONT GUARD....483
REMOVAL....483
INSTALLATION....483
RADIATOR....484
REMOVAL....484
INSTALLATION....487
AIR CONDITIONER CONDENSER....488
REMOVAL....488
INSTALLATION....488
MUFFLER....489
REMOVAL....489
INSTALLATION....490
AIR FILTER....491
REMOVAL....491
INSTALLATION....491
TURBOCHARGER....492
REMOVAL....492
INSTALLATION....494
AIR CONDITIONER COMPRESSOR....495
REMOVAL....495
INSTALLATION....497
AIR CONDITIONER COMPRESSOR BELT....498
REMOVAL....498
INSTALLATION....498
EXHAUST STACK....499
REMOVAL....499
INSTALLATION....500
OPERATOR’S SEAT....500
REMOVAL....500
INSTALLATION....500
CAB HEATING AND COOLING SYSTEM....501
REMOVAL....501
FAN....505
HEATER CORE....506
INSTALLATION....507
BATTERY....508
REMOVAL....508
INSTALLATION....509
FUEL TANK....510
REMOVAL....510
INSTALLATION....511
STEERING AND FRONT DASH ASSEMBLY....512
STEERING WHEEL....512
REMOVAL....512
INSTALLATION....513
FRONT DASH ASSEMBLY....514
REMOVAL....514
INSTALLATION....515
STEERING UNIT....516
REMOVAL....516
INSTALLATION....517
BRAKE SYSTEM....518
REMOVAL....518
INSTALLATION....520
BLEED AIR FROM BRAKING CIRCUIT....521
CAB....522
REMOVAL....522
INSTALLATION....528
HYDRAULIC OIL TANK....529
REMOVAL....529
INSTALLATION....535
HYDRAULIC PUMP....536
REMOVAL....536
INSTALLATION....538
TRANSMISSION....539
REMOVAL....539
INSTALLATION....542
BLEED AIR FROM CYLINDERS....543
TRANSMISSION OVERHAUL PROCEDURES....544
TORQUE CONVERTER....544
REMOVAL....544
INSTALLATION....544
PLUGS AND FILTERS....545
DISASSEMBLY....545
ASSEMBLY....549
PUMP....552
DISASSEMBLY....552
ASSEMBLY....554
VALVE BODY....556
DISASSEMBLY....556
ASSEMBLY....559
HYDRAULIC SUPPLY LINES....562
DISASSEMBLY....562
ASSEMBLY....563
TRANSMISSION HOUSING....565
DISASSEMBLY....565
ASSEMBLY....571
CLUTCH PACK (A) AND GEAR SHAFT (D)....576
DISASSEMBLY....576
CLUTCHES AND DISC INSPECTIONS....585
ASSEMBLY....586
CHECKING CLUTCH FUNCTION....595
SHAFT (B)....596
DISASSEMBLY....596
CLUTCHES AND DISC INSPECTIONS....603
ASSEMBLY....604
SHAFT (C)....611
DISASSEMBLY....611
CLUTCHES AND DISC INSPECTIONS....625
1st GEAR CLUTCHES....626
3rd GEAR CLUTCHES....626
4th GEAR CLUTCHES....626
ASSEMBLY....627
SHAFT (E)....643
DISASSEMBLY....643
CLUTCHES AND DISC INSPECTIONS....648
ASSEMBLY....649
ENGINE....656
REMOVAL....656
INSTALLATION....662
CONTROL VALVE....663
REMOVAL....663
INSTALLATION....665
STEERING SOLENOID VALVE....666
REMOVAL....666
INSTALLATION....666
FRONT AXLE ASSEMBLY....667
REMOVAL....667
INSTALLATION....668
FRONT AXLE OVERHAUL PROCEDURES....669
STEERING CYLINDER ASSEMBLY....669
DISASSEMBLY....669
ASSEMBLY....670
FRONT AXLE END PLANETARY ASSEMBLY....675
DISASSEMBLY....675
ASSEMBLY....677
AXLE END HUB ASSEMBLY....678
DISASSEMBLY....678
ASSEMBLY....682
AXLE HOUSING....685
DISASSEMBLY....685
ASSEMBLY....687
DIFFERENTIAL....688
DISASSEMBLY....688
ASSEMBLY....690
PINION....694
DISASSEMBLY....694
ASSEMBLY....697
CARRIER....701
DISASSEMBLY....701
ASSEMBLY....702
REAR AXLE ASSEMBLY....704
REMOVAL....704
INSTALLATION....706
REAR AXLE OVERHAUL PROCEDURES....707
PARKING BRAKE ASSEMBLY....707
DISASSEMBLY....707
ASSEMBLY....709
MAINTENANCE....711
SERVICE BRAKE ASSEMBLY....714
DISASSEMBLY....714
ASSEMBLY....719
REAR AXLE END PLANETARY ASSEMBLY....725
DISASSEMBLY....725
ASSEMBLY....730
DIFFERENTIAL....734
DISASSEMBLY....734
ASSEMBLY....736
DIFFERENTIAL LOCK....741
DISASSEMBLY....741
ASSEMBLY....744
CARRIER....747
DISASSEMBLY....747
ASSEMBLY....751
PINION....755
DISASSEMBLY....755
ASSEMBLY....757
FRONT LOADER PPC VALVE....761
REMOVAL....761
INSTALLATION....762
FRONT-END LOADER ASSEMBLY....763
LOADER BOOM CYLINDERS....763
INSTALLATION....764
BUCKET CYLINDERS....765
REMOVAL....765
INSTALLATION....766
FRONT LOADER BUCKET....767
REMOVAL....767
INSTALLATION....767
LOADER BOOM ASSEMBLY....768
REMOVAL....768
INSTALLATION....769
BACKHOE PPC VALVE....770
REMOVAL....770
INSTALLATION....771
PPC VALVE SUPPORT RELEASE CABLES....772
REMOVAL....772
INSTALLATION AND ADJUSTING....774
PPC VALVE GAS STRUT....775
REMOVAL....775
INSTALLATION....777
SOLENOID VALVE....778
REMOVAL....778
INSTALLATION....778
BACKHOE ASSEMBLY....779
BUCKET CYLINDER....779
REMOVAL....779
INSTALLATION....780
TELESCOPIC ARM CYLINDER....781
REMOVAL....781
INSTALLATION....781
ARM CYLINDER....782
REMOVAL....782
INSTALLATION....783
BOOM CYLINDER....784
REMOVAL....784
INSTALLATION....785
SWING CYLINDERS....786
REMOVAL....786
INSTALLATION....788
BOOM LOCK CYLINDER....789
REMOVAL....789
INSTALLATION....790
BACKHOE BUCKET....790
REMOVAL....790
INSTALLATION....790
BACKHOE ARM....791
REMOVAL....791
INSTALLATION....793
TELESCOPIC ARM....794
REMOVAL....794
INSTALLATION....794
TELESCOPIC ARM GIBS....795
REMOVAL....795
INSTALLATION....795
BACKHOE BOOM....796
REMOVAL....796
INSTALLATION....797
BACKHOE SWING FRAME....798
REMOVAL....798
INSTALLATION....798
OUTRIGGER CYLINDERS....799
REMOVAL....799
INSTALLATION....800
OUTRIGGER ARMS....801
REMOVAL....801
INSTALLATION....801
WORK EQUIPMENT CYLINDER OVERHAUL....802
LOADER AND BACKHOE CYLINDERS....802
DISASSEMBLY....802
ASSEMBLY....804
SWING CYLINDERS....807
DISASSEMBLY....807
ASSEMBLY....809
Section 90.pdf....0
90 DIAGRAMS AND SCHEMATICS....813
HYDRAULIC CIRCUIT....815
1 OF 4....815
2 OF 4....816
3 OF 4....817
4 OF 4....818
ELECTRICAL SCHEMATICS....819
RIGHT SIDE DASH (WIRING - 1 OF 8)....819
HARNESS AND SWITCHES (WIRING - 2 OF 8)....820
RELAYS AND SWITCHES (WIRING - 3 OF 8)....821
HARNESS (WIRING - 4 OF 8)....822
MOTORS AND CONTROLS (WIRING - 5 OF 8)....823
SOLENOIDS (WIRING - 6 OF 8)....824
OPTIONAL 4WS (WIRING - 7 OF 8)....825
LIST OF CONNECTORS (WIRING - 8 OF 8)....826
Komatsu Backhoe Loader WB146PS Repair Service Manual
