Komatsu Backhoe Loader WB146 Repair Service Manual
Complete service repair manual with Electrical Wiring Diagrams for Komatsu Backhoe Loader WB146, with all the technical information to maintain, diagnose, repair, and rebuild like professional mechanics.
Komatsu Backhoe Loader WB146 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.
CEAM016604 - Backhoe Loader WB146-5, WB146PS-5 Operation & Maintenance Manual.pdf
CEBM016503 - Backhoe Loader WB146-5 Shop Manual.pdf
PRODUCT DETAILS:
Total Pages: 813 pages
File Format: PDF (Internal Links, Bookmarked, Table of Contents, Searchable, Printable, high quality)
Language: English
TABLE OF CONTENTS
CEAM016604 - Backhoe Loader WB146-5, WB146PS-5 Operation & Maintenance Manual...1
COVER...1
INTRODUCTION...3
FOREWORD...4
SAFETY INFORMATION...5
Safety Labels...6
APPROVED AND NON-APPROVED USES...7
Approved Functions...7
Non-approved Functions...7
PRODUCT INFORMATION...8
Main Features...8
Breaking-in the New Machine...8
Synthetic Biodegradable Oil Types...8
PRODUCT IDENTIFICATION...9
Machine Serial Number...9
Machine Identification Plate...9
Engine Serial Number and Emission Label...10
Front Axle Serial Number...10
Rear Axle Serial Number...10
Transmission Serial Number...11
Cab Serial Number...11
Canopy Serial Number...11
SERIAL NUMBERS AND DISTRIBUTOR INFORMATION...12
TABLE OF CONTENTS...13
SAFETY...23
SAFETY AND WARNING DECALS...24
Location of Safety Decals...24
Safety and Warning Decals...27
GENERAL SAFETY RULES AND PRECAUTIONS...35
General Safety Rules...35
If Abnormalities are Found...35
Safety at Job Site...36
Safety Features...36
Clothing and Personal Protective Equipment...36
Keep Machine Clean...37
Fire and Explosion Prevention...37
Fire Caused by Fuel, Oil, Antifreeze, or Window Washer Fluid...37
Fire Caused by Accumulation of Flammable Material...38
Fire Caused by Electric Wiring...38
Fire Caused by Hydraulic Line...38
Explosion Caused by Lighting Equipment...38
Action if Fire Occurs...38
Asbestos Hazard Alert...39
Keep Operator's Cab Clean...39
Room Ventilation...39
Burn Prevention...40
Hot Coolant...40
Hot Oil...40
PRECAUTIONS FOR OPERATION...41
Seat Belt Inspection...41
Leaving the Operator’s Seat...42
Mounting and Dismounting...43
Checking the Rearview Mirrors...43
Crush or Pinch Point Dangers...44
Fire Extinguisher and First Aid Kit...44
Inside Operator’s Compartment...44
Cleaning Windows, Mirrors and Lights...44
Checking the Windshield Wiper Blades and Bulbs...45
Precautions When Using ROPS...45
Unauthorized Modifications...45
Precautions for Attachments...46
Quick Coupler Attachment...46
Large Attachments...46
PRECAUTIONS BEFORE STARTING OPERATIONS...47
Hand Signals...47
Pre-operational Checks...47
Starting Your Work Operations...47
Work Site Hazards...48
Working on Loose or Unstable Ground...48
Visibility...48
Precautions to be Taken When Using Synthetic Biodegradable Oil (HEES)...48
Avoid Dangerous Situations...49
Working Clearances...51
High Voltage Lines...51
RULES FOR ROAD TRAVEL...52
Travel Precautions...52
Rules for Traveling in Reverse...53
Traveling on Snow or Frozen Surfaces...54
Traveling on Slopes...54
Traveling on Loose or Unstable Ground...55
Parking the Machine...56
PRECAUTIONS DURING MAINTENANCE OPERATIONS...57
Warning Tags...57
Equipment Storage...57
Working Under the Machine...58
Using Drop Lamps...58
Keeping the Machine Clean...58
Running the Machine During Maintenance...59
Rules for Refueling the Machine...59
Cooling System Precautions...59
Battery Precautions...60
Hazards...61
Using Booster Cables...62
Starting the Machine with Booster Cables...62
High-Pressure Hoses...63
Safety Handling of High-pressure Hoses...63
Precaution for High Fuel Pressure...63
High-Temperature Areas...63
Rotating Parts...64
Disposal of Waste Materials...64
Inflating Tires...64
Accumulator...65
Critical Parts...65
OPERATION...67
GENERAL VIEW OF MACHINE...68
Front View of Machine...68
Rear View of Machine...69
OPERATION CONTROLS...70
In the Cab (Joystick Controls)...70
Steering Column Switches...71
Directional Control Switch (Standard)...71
Speed Selector Switch (PS Model Only)...71
Multifunctional Switch...71
Front Instrument Panel and Controls...72
Side Instrument and Controls...76
Cab Switches and Electric Accessories...84
Front Work Light Switch...84
Rear Work Light Switch...84
Rear Windshield Wiper Switch...84
Rear Windshield Washer Switch...84
Overhead Lamp (Dome)...85
Power Outlet...85
Power Outlet Socket...85
Front End Loader Controls...86
Loader Declutch Control Button...86
Multipurpose Bucket Open Button...86
Differential Lock Button...87
Multipurpose Bucket Close Button...87
Front Loader Speed Control Button...87
Kick Down Button (Power Shift Only)...88
Gear Shift Lever Controls (Power Shuttle Only)...88
Declutch Button...88
Changing Speed Ranges...88
PS Model Control Lever...89
Directional Control Lever...89
Brakes, Parking Brake, Accelerator, and Throttle Control...90
Brake Pedals...90
Parking Brake...91
Accelerator Pedal...91
Hand Throttle...92
CAB ENVIRONMENT AND SAFETY EQUIPMENT...93
Heating and Ventilation System...93
Air Conditioning (if equipped)...93
Heating System...93
Seat and Seat Belt...95
Seat...95
Seat Belt...95
Safety Equipment and Storage Areas...96
Fire Extinguisher...96
First Aid Kit...96
Document Storage...96
Storage Compartment...96
CAB AND GUARDS...98
Cab...98
Doors and Windows...98
Guards...100
Driver’s Overhead Guard...100
Engine Hood...101
ELECTRICAL...101
Switches and Extra Accessories...101
Battery Disconnect Switch...101
Adapter for Radio (if provided)...102
Fuses and Relays...102
Fuse and Relay Panel Location...102
Fuse and Relay Panel Layout...103
Fuses...103
Relays...105
Heating and Air Conditioning Fuses and Relays...106
Fuses...106
Relays...106
OPERATING THE MACHINE...107
Checking the Fuel Supply...107
Starting the Engine...107
Starting the Engine in Cold Weather...108
Warming Up the Machine...110
Shutting Down the Engine...110
OPERATING THE FRONT END LOADER AND BACKHOE...111
Pre-operational Checks...111
Perform a Walk Around Check of Your Machine...111
Under the Hood...112
In the Operator’s Cab...112
Start-up Checks...112
STARTING YOUR WORK...113
Avoid Dangerous Situations...113
Working Clearances...116
High Voltage Lines...116
Operating the Front End Loader...117
Control Lever Positions...118
Multipurpose Bucket Opening Push Button...118
Multipurpose Bucket Close Push Button...118
Performing Loading Operations...119
Bucket Position Indicator...119
Organizing Your Work Area...119
Loading Heaped Material...119
Loading a Truck Bed or Trailer...121
Working on Slopes with a Loaded Bucket...121
Changing the Front Bucket...122
Operating the Backhoe...123
PPC Controls...123
Adjusting the Backhoe Controls...123
Adjusting Joystick Positions...124
Adjusting Wrist Supports...125
Adjusting Stow Position (Cab Only)...125
Unlocking the Backhoe...126
Pattern Change Control Lever...127
ISO Backhoe Controls...128
Komatsu Backhoe Controls...129
Positioning the Machine...130
Digging Methods...131
Changing the Backhoe Bucket...132
Adjusting the Bucket...132
SAFETY LOCK USAGE...133
Front End Loader Cylinder Lock...133
Backhoe Locks...135
TRAVELING WITH THE MACHINE...136
Traveling...136
Traveling on Slopes...137
Traveling or Working in Swampy or Wet Areas...138
PARKING THE MACHINE...139
Parking for Short Periods of Time...139
Parking for Long Periods of Time...139
Parking on an Incline...140
TRANSPORTING THE MACHINE...141
Loading and Securing the Machine...141
LIFTING THE MACHINE...142
LIFTING POSITION MARKS...142
LIFTING PROCEDURE...143
EMERGENCY RECOVERY...145
How to Move the Machine...145
PRECAUTIONS DURING SEASONAL CHANGES...146
Cold Seasons...146
Fuel and Lubricants...146
Coolant...146
Battery...147
Warm Seasons...147
TROUBLESHOOTING...148
Battery...148
Servicing...148
Removal and Installation...149
Starting the Engine with Booster Cables...150
Accessing the Battery...150
Connecting the Booster Cables...150
Starting the Engine...151
Disconnecting the Booster Cables...151
Electrical Circuits...152
Hydraulic System...152
Braking System...153
Transmission...153
Engine...154
MAINTENANCE...155
MAINTENANCE INFORMATION...156
Maintenance Notes...157
Engine Maintenance...158
Engine Oil...158
Coolant...158
Fuel...158
Hydraulic System Maintenance...158
Carrying Out KOWA (Komatsu Oil Wear Analysis)...159
KOWA Analysis Items...159
Electrical System Maintenance...160
Lubrication...160
WEAR PARTS LIST...161
FUEL, COOLANT, AND LUBRICANTS...162
Proper Selection According to the Ambient Temperature...162
Grease...163
Fuel...163
APPROVED SYNTHETIC LUBRICANTS (HEES)...164
LUBRICATION DIAGRAMS...165
General View...165
Multipurpose Bucket and Pallet Forks...166
Telescopic Arm...167
TORQUE SPECIFICATIONS...168
Torque List...168
Torque of Bolts...168
Torque of Hose Nuts...169
Torque of Split Flange Bolts...169
Torque for Flared Nuts...170
Torque for O-Ring Boss Piping Joints...170
Torque for O-Ring Boss Plugs...171
Torque for Hoses (Taper Seal Type and Face Seal Type)...171
PERIODIC REPLACEMENT OF COMPONENTS...172
SAFETY CRITICAL PARTS...173
Fuel Supply System...173
Delivery / Return Hydraulic System...173
Delivery / Return Hydraulic System...174
Seat Belt System...174
MAINTENANCE SCHEDULE...175
Maintenance Schedule Chart...175
Initial 50 Hours Maintenance...178
Initial 250 Hours Maintenance...178
Initial 500 Hours Maintenance...178
When Required...179
Cleaning or Changing Engine Air Filters...179
Checking and Cleaning Cab Air Filter...181
Cleaning Air Recirculation Filter...182
Checking the Level in Windshield Washer Reservoir...182
Checking Windshield Wiper Blades...182
Lubricating Cab Door Hinges...183
Bleeding Brake System...183
Checking and Adjusting Front Wheel Toe-in...184
Checking and Adjusting Parking Brake...185
Checking and Adjusting Brake Pedal Stroke...187
Adjusting Automatic Return of Front Bucket to the Digging Position...187
Checks Before Starting...188
Various Checks...188
Checking Fuel Level...188
Checking Coolant Level...189
Checking Engine Oil Level...189
Checking Hydraulic Oil Level...190
Draining Water Separator...191
Every 10 Hours Maintenance...192
Lubricating Joints (Grease Fittings)...192
Joint Lubrication Points...193
Every 50 Hours Maintenance...195
Checking Radiator Fluid Level...195
Checking Brake System Oil Level...196
Lubricating Drive Shafts...197
Lubricating Front Axle Joints...198
Checking Electrical System...198
Every 250 Hours Maintenance...199
Checking Serpentine Belt...199
Checking A/C Compressor Belt Tension...199
Cleaning Outside of Radiator...200
Checking Battery Electrolyte...201
Checking Front Axle Oil Levels...202
Checking Rear Axle Oil Levels...202
Transmission Oil Level...203
Checking Wheel Lug Nut Torque...203
Every 500 Hours Maintenance...204
Changing Engine Oil...204
Changing Engine Oil Filter...205
Changing Hydraulic Tank Oil Filter...206
Changing Fuel Filter...209
Draining Fuel Tank...210
Draining Hydraulic Oil Tank...210
Every 1000 Hours Maintenance...211
Changing Front Axle Oil...211
Changing the Rear Axle Oil...212
Changing Transmission Oil...213
Changing Transmission Filter...214
Checking and Adjusting Engine Valve Clearance...214
Every 2000 Hours Maintenance...215
Changing Hydraulic System Oil and Cleaning Suction Filter...215
Changing Coolant...218
Changing Brake System Oil...220
Checking the Alternator and the Starter...220
Changing the Alternator Belt...220
Checking the A/C Cooling Gas Quantity...220
MAINTENANCE WHEN USING DEMOLITION HAMMER...221
Changing Hydraulic Oil Filter...221
Changing Hydraulic Oil...221
LONG TERM STORAGE...222
Before Storage...222
During Storage...223
After Storage...223
SPECIFICATIONS...225
SPECIFICATIONS...226
Machine Dimensions and Weights...226
Standard Arm...228
Retracted Telescopic Arm...229
Extended Telescopic Arm...230
MACHINE SYSTEMS SPECIFICATIONS...231
Engine...231
Electrical System...231
Service Refill Capacities...231
Standard Tires...231
Transmission...232
Total Mass...232
Standard Bucket Capacity...232
Loader...232
OPTIONS, ATTACHMENTS...233
AUTHORIZED OPTIONAL EQUIPMENT...234
Precautions Regarding Safety...234
Precautions Regarding the Installation of Equipment...235
Optional Equipment Measurements...235
Front End Loader...235
Backhoe Unit...236
FRONT EQUIPMENT QUICK COUPLING DEVICES...237
Manual Control Quick Coupling...237
MULTIPURPOSE BUCKET (4-in-1)...238
Bucket Operation...239
Description...239
Bucket Uses...239
Pallet Forks...240
Safety Devices...241
Using Forks...241
Removing Forks...243
Installing Forks...243
Maintenance...243
BACKHOE TELESCOPIC ARM...244
Description...244
Control...244
Safety Devices...245
Using the Telescopic Arm...245
Maintenance...246
Adjusting the Guide Slack...246
DEMOLITION HAMMER piping...248
Description...248
Control...248
Rules for Hammer Usage...249
Always Avoid the Following Uses...250
Installing the Hammer...252
Removing the Hammer...254
Using the Hammer...254
Maintenance...254
HYDRAULIC JACK HAMMER...255
Description...255
Control...255
Connecting and Removing the Jack Hammer...256
Connecting the Jack Hammer...256
Disconnecting the Jack Hammer...256
Using the Jack Hammer...256
LOAD STABILIZER SYSTEM (LSS) (Ride Control Optional)...257
Load Stabilizer System (LSS) Accumulator...257
Pressurizing the Load Stabilizer System (LSS)...257
CEBM016503 - Backhoe Loader WB146-5 Shop Manual...259
COVER...259
FOREWORD...260
CONTENTS...260
LIST OF REVISED PAGES...261
SAFETY...267
SAFETY NOTICE...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
PUSH PULL COUPLER...272
TYPE 1...272
TYPE 2...273
TYPE 3...274
COATING MATERIALS...275
STANDARD TIGHTENING TORQUE...277
STANDARD TIGHTENING TORQUE OF BOLTS AND NUTS...277
TIGHTENING TORQUE OF HOSE NUTS...278
TIGHTENING TORQUE OF SPLIT FLANGE BOLTS...278
TIGHTENING TORQUE FOR FLARED NUTS...278
TABLE OF TIGHTENING TORQUES FOR O-RING BOSS PIPING JOINTS...279
TABLE OF TIGHTENING TORQUES FOR O-RING BOSS PLUGS...279
TIGHTENING TORQUE TABLE FOR HOSES (TAPER SEAL TYPE AND FACE SEAL TYPE)...279
ELECTRIC WIRE CODE...280
CLASSIFICATION BY THICKNESS...280
CLASSIFICATION BY COLOR AND CODE...280
CONVERSION TABLES...281
METHOD OF USING THE CONVERSION TABLE...281
01 GENERAL...287
SPECIFICATION DRAWING...288
SPECIFICATIONS...288
MACHINE DIMENSIONS AND WEIGHTS...288
BACKHOE ARM...289
WITH STANDARD ARM...289
WITH EXTENDABLE ARM (RETRACTED)...290
WITH EXTENDABLE ARM (EXTENDED)...291
MACHINE SYSTEMS SPECIFICATIONS...292
ENGINE...292
ELECTRICAL SYSTEM...292
SERVICE REFILL CAPACITIES...292
TIRE PRESSURE...292
TRANSMISSION...293
TOTAL MASS...293
LOADER...293
BACKHOE...293
WEIGHT TABLE...294
FUEL, COOLANT, AND LUBRICANTS...295
PROPER SELECTION ACCORDING TO THE AMBIENT TEMPERATURE...295
GREASE...296
FUEL REMARKS...296
HOMOLOGATED (HEES) SYNTHETIC LUBRICANTS...297
LUBRICATION DIAGRAMS...298
GENERAL VIEW...298
10 STRUCTURE, FUNCTION AND MAINTENANCE...299
POWER TRAIN...302
DESCRIPTION...302
POWER FLOW...302
TRANSMISSION DIAGRAM...304
TRANSMISSION...306
COMPLETE ASSEMBLY...306
FORWARD REVERSE CLUTCH...310
1ST THROUGH 4TH SPEED SHAFT...310
4WD SHAFT...311
FRONT AXLE...312
COMPLETE ASSEMBLY...312
DIFFERENTIAL...313
PLANETARY...314
REAR AXLE...315
COMPLETE ASSEMBLY...315
DIFFERENTIAL...316
PLANETARY...317
WORK BRAKES...318
DIFFERENTIAL LOCK...319
HYDRAULIC PUMP...320
MAIN PUMP...322
FUNCTION...324
STRUCTURE...324
OPERATION...324
Pump Operation...324
Control of Delivery...325
DELIVERY CONTROL VALVE...326
LS VALVE FUNCTION...328
PC VALVE FUNCTION...328
PC VALVE OPERATION...329
Spring Operation...329
When Pump Pressure PA is Low...329
When Pump Pressure PA Is High...330
When Equilibrium Has Been Reached...331
MAIN CONTROL VALVE...332
CLSS...340
DESCRIPTION...340
CHARACTERISTICS...340
STRUCTURE...340
OPERATING PRINCIPLES...341
PUMPING PLATE CONTROL ANGLE...341
PRESSURE COMPENSATION CONTROL...342
MAIN CONTROL VALVE...343
UNLOADING VALVE...344
Neutral Position...344
FUNCTION...344
OPERATING...344
Control Valve Fine Control...345
FUNCTION...345
OPERATING...345
Control Valve Is In Use...346
FUNCTION...346
OPERATING...346
LS PRESSURE...347
Function...347
Operation w/o Outriggers...347
Operation w/o Outriggers...348
LS BY-PASS PLUG...349
Description...349
Operation...349
PRESSURE COMPENSATION...350
Function...350
Operation...350
PRESSURE COMPENSATION VALVE...351
Function...351
Compensation Characteristics...351
PRIORITY VALVE...352
PPC REDUCING VALVE...353
Function...353
Neutral Condition...353
Control Valve Operated...354
STEERING UNIT...356
TECHNICAL DATA...356
OPERATION...356
PPC VALVE...358
LOADER...358
OPERATION...360
Neutral Position...360
BUCKET PORTION...360
BOOM PORTION...361
Fine Control, Neutral g Actuator...361
Fine Control, Actuator g Neutral...362
Fine Control, Neutral g Full Stroke...362
Control Lever To Float Position...363
Control Lever From Float Position...363
OUTRIGGER...364
OPERATION...365
Neutral Position...365
Fine Control, Neutral g Actuator...366
Full Lever, Actuator g Neutral...367
BACKHOE...368
LEFT VALVE...368
RIGHT VALVE...369
SOLENOID VALVE...370
HYDRAULIC CONTROLS W/O MP BUCKET...370
HYDRAULIC CONTROLS WITH MP BUCKET...371
LOADER CYLINDERS...372
BOOM...372
CHARACTERISTICS...372
BUCKET...373
CHARACTERISTICS...373
MP BUCKET...374
CHARACTERISTICS...374
BACKHOE CYLINDERS...375
BOOM...375
CHARACTERISTICS...375
ARM...376
CHARACTERISTICS...376
BUCKET...377
CHARACTERISTICS...377
TELESCOPIC ARM CYLINDER...378
CHARACTERISTICS...378
SWING...379
CHARACTERISTICS...379
OUTRIGGER...380
CHARACTERISTICS...380
WORK EQUIPMENT...382
LOADER...382
BACKHOE...386
AIR CONDITIONING...392
20 TESTING, ADJUSTING ANDTROUBLESHOOTING...395
STANDARD VALUE TABLE...397
ENGINE...397
CHASSIS...398
SPECIAL TOOLS...405
ENGINE SPEED...406
ENGINE WITHOUT LOAD...406
MACHINE IN POWER MODE AT MIN...406
WITH CONVERTER STALLED...406
CONVERTER STALLED AND HYDRAULIC PUMP UNDER LOAD...406
ANALYSIS...407
VALVE CLEARANCE...408
AC COMPRESSOR BELT TENSION...409
BLEED AIR FROM CIRCUITS...410
BLEED AIR FROM HYDRAULIC CIRCUIT...410
BLEED AIR FROM BRAKING CIRCUIT...410
RELEASING RESIDUAL PRESSURE...411
ACCELERATOR PEDAL AND LEVER...412
ACCELERATOR PEDAL TRAVEL...412
ACCELERATOR LEVER TRAVEL...413
BRAKE SYSTEM...414
CONTROL...414
ADJUSTMENT...415
CHECKS...416
LEAKAGE CHECKS...416
INDIVIDUAL PUMP CHECK...417
BRAKE GROUP LEAKAGE...418
PARKING BRAKE ADJUSTMENT...419
HYDRAULIC CIRCUIT...420
INTRODUCTION...420
INTRODUCTION...420
MAIN CONTROL VALVE...421
RELIEF VALVES...422
TESTING...422
UNLOADING VALVE...422
MAIN RELIEF VALVE...422
SECONDARY VALVES...422
Boom Swing, Loader Bucket Dump and Hammer...422
Backhoe Boom Raise...423
Arm In, Loader Bucket, Backhoe Bucket, Boom Raise, And MP Bucket...424
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...434
SUPPLY PRESSURE...434
TRANSMISSION CLUTCH FUNCTION...435
MACHINE PREPARATION...435
CONTROL...435
HYDRAULIC DRIFT...436
LOADER...436
BOOM CIRCUIT...436
BUCKET CIRCUIT...437
BACKHOE...438
BOOM CIRCUIT...438
ARM CIRCUIT...439
BUCKET CIRCUIT...440
OUTRIGGERS CIRCUIT - W/O LOCK VALVES...441
AIR CONDITIONING...442
WORK TEMPERATURE...442
UNIT CHECK...443
EMPTYING THE AC UNIT...444
TROUBLESHOOTING GUIDE...446
FRONT AXLE...446
REAR AXLE...451
TRANSMISSION...456
FUSES AND RELAYS...459
FUSE AND RELAY PANEL LOCATION...459
FUSE AND RELAY PANEL LAYOUT...460
FUSES...460
RELAYS...462
HEATING AND AIR CONDITIONING FUSES AND RELAYS...463
FUSES...463
RELAYS...463
30 DISASSEMBLY AND ASSEMBLY...465
HOW TO USE THIS MANUAL...470
REMOVAL AND INSTALLATION OF COMPONENTS...470
REMOVAL...470
INSTALLATION...470
OVERHAUL OF COMPONENTS...471
DISASSEMBLY PROCEDURES...471
ASSEMBLY PROCEDURES...471
PRECAUTIONS WHEN PERFORMING OPERATIONS...472
SPECIAL TOOL LIST...474
CONNECTOR REPAIR PROCEDURES...477
CONTACT TERMINAL REMOVAL (HD30 TYPE)...477
CRIMPING CONTACT TERMINAL (HD30 TYPE)...478
INSERTION OF CONTACT TERMINAL (HD30 TYPE)...479
CONTACT TERMINAL REMOVAL (DT TYPE)...480
CRIMPING CONTACT TERMINAL (DT TYPE)...481
INSERTION OF CONTACT TERMINAL (DT TYPE)...482
STRIPPING INSULATION...483
BLEED AIR FROM CIRCUITS...484
BLEED AIR FROM HYDRAULIC CIRCUIT...484
BLEED AIR FROM BRAKING CIRCUIT...484
RELEASING RESIDUAL PRESSURE...485
ENGINE HOOD...486
REMOVAL...486
INSTALLATION...487
FRONT GUARD...488
REMOVAL...488
INSTALLATION...488
RADIATOR...489
REMOVAL...489
INSTALLATION...492
AIR CONDITIONING CONDENSER...493
REMOVAL...493
INSTALLATION...493
MUFFLER...494
REMOVAL...494
INSTALLATION...495
AIR FILTER...496
REMOVAL...496
INSTALLATION...496
TURBOCHARGER...497
REMOVAL...497
INSTALLATION...499
REFRIGERANT COMPRESSOR...500
REMOVAL...500
INSTALLATION...502
REFRIGERANT COMPRESSOR BELT...503
REMOVAL...503
INSTALLATION...503
EXHAUST STACK...504
REMOVAL...504
INSTALLATION...505
OPERATOR’S SEAT...506
REMOVAL...506
INSTALLATION...506
CAB HEATING AND COOLING SYSTEM...507
REMOVAL...507
FAN...511
HEATER CORE...512
INSTALLATION...513
BATTERY...514
REMOVAL...514
INSTALLATION...515
FUEL TANK...516
REMOVAL...516
INSTALLATION...517
STEERING AND FRONT DASH ASSEMBLY...518
STEERING WHEEL...518
INSTALLATION...519
FRONT DASH ASSEMBLY...520
REMOVAL...520
INSTALLATION...522
STEERING UNIT...523
REMOVAL...523
INSTALLATION...524
CAB...525
REMOVAL...525
INSTALLATION...532
HYDRAULIC OIL TANK...533
REMOVAL...533
INSTALLATION...539
HYDRAULIC PUMP...540
REMOVAL...540
INSTALLATION...542
TRANSMISSION...543
REMOVAL...543
INSTALLATION...547
TRANSMISSION OVERHAUL PROCEDURES...548
TORQUE CONVERTER...548
REMOVAL...548
INSTALLATION...548
PLUGS AND FILTERS...549
DISASSEMBLY...549
ASSEMBLY...553
PUMP...556
DISASSEMBLY...556
ASSEMBLY...558
OIL LINE...560
REMOVAL...560
ASSEMBLY...560
VALVE BODY...561
DISASSEMBLY...561
ASSEMBLY...569
4 WHEEL DRIVE SOLENOID VALVE...577
DISASSEMBLY...577
ASSEMBLY...579
TRANSMISSION HOUSING...581
DISASSEMBLY...581
ASSEMBLY...591
CLUTCH PACK (A) AND GEAR SHAFT (D)...601
DISASSEMBLY...601
CLUTCHES AND DISC INSPECTIONS...610
ASSEMBLY...611
CHECKING CLUTCH FUNCTION...620
GEAR SHAFTS (B) AND (C)...621
DISASSEMBLY...621
ASSEMBLY...630
GEAR SHAFT (E)...639
DISASSEMBLY...639
ASSEMBLY...643
SHIFTER TOWER AND FORKS...649
DISASSEMBLY...649
ASSEMBLY...652
ENGINE...655
REMOVAL...655
INSTALLATION...661
STEERING SOLENOID VALVE...662
REMOVAL...662
INSTALLATION...662
FRONT AXLE ASSEMBLY...664
REMOVAL...664
INSTALLATION...665
FRONT AXLE OVERHAUL PROCEDURES...666
STEERING CYLINDER ASSEMBLY...666
DISASSEMBLY...666
ASSEMBLY...667
FRONT AXLE END PLANETARY ASSEMBLY...672
DISASSEMBLY...672
ASSEMBLY...674
AXLE END HUB ASSEMBLY...675
DISASSEMBLY...675
ASSEMBLY...679
AXLE HOUSING...682
DISASSEMBLY...682
ASSEMBLY...684
DIFFERENTIAL...685
DISASSEMBLY...685
ASSEMBLY...687
PINION...691
DISASSEMBLY...691
ASSEMBLY...694
CARRIER...698
DISASSEMBLY...698
ASSEMBLY...699
REAR AXLE ASSEMBLY...701
REMOVAL...701
INSTALLATION...703
REAR AXLE OVERHAUL PROCEDURES...704
PARKING BRAKE ASSEMBLY...704
DISASSEMBLY...704
ASSEMBLY...706
MAINTENANCE...708
SERVICE BRAKE ASSEMBLY...711
DISASSEMBLY...711
ASSEMBLY...716
REAR AXLE END PLANETARY ASSEMBLY...722
DISASSEMBLY...722
ASSEMBLY...727
DIFFERENTIAL...731
DISASSEMBLY...731
ASSEMBLY...733
DIFFERENTIAL LOCK...738
DISASSEMBLY...738
ASSEMBLY...741
CARRIER...744
DISASSEMBLY...744
ASSEMBLY...748
PINION...752
DISASSEMBLY...752
ASSEMBLY...754
FRONT LOADER PPC VALVE...758
REMOVAL...758
INSTALLATION...759
FRONT-END LOADER ASSEMBLY...760
LOADER BOOM CYLINDERS...760
INSTALLATION...761
BUCKET CYLINDERS...762
REMOVAL...762
INSTALLATION...763
FRONT LOADER BUCKET...764
REMOVAL...764
INSTALLATION...764
LOADER BOOM ASSEMBLY...766
REMOVAL...766
INSTALLATION...767
BACKHOE PPC VALVE...768
REMOVAL...768
INSTALLATION...769
PPC VALVE SUPPORT RELEASE CABLES...770
REMOVAL...770
INSTALLATION AND ADJUSTING...772
PPC VALVE GAS STRUT...773
REMOVAL...773
INSTALLATION...775
CONTROL VALVE...776
REMOVAL...776
INSTALLATION...778
PPC VALVE...780
REMOVAL...780
INSTALLATION...781
BACKHOE ASSEMBLY...782
BUCKET CYLINDER...782
REMOVAL...782
INSTALLATION...783
EXTENDABLE ARM CYLINDER...784
REMOVAL...784
INSTALLATION...784
ARM CYLINDER...786
REMOVAL...786
INSTALLATION...787
BOOM CYLINDER...788
REMOVAL...788
INSTALLATION...790
SWING CYLINDERS...791
REMOVAL...791
INSTALLATION...793
BOOM LOCK CYLINDER...794
REMOVAL...794
INSTALLATION...795
BACKHOE BUCKET...796
REMOVAL...796
INSTALLATION...796
BACKHOE ARM...797
REMOVAL...797
INSTALLATION...799
EXTENDABLE ARM...800
INSTALLATION...800
EXTENDABLE ARM GIBS...801
INSTALLATION...801
BACKHOE BOOM...802
REMOVAL...802
INSTALLATION...803
BACKHOE SWING FRAME...804
REMOVAL...804
INSTALLATION...804
OUTRIGGER CYLINDERS...806
REMOVAL...806
INSTALLATION...807
OUTRIGGER ARMS...808
REMOVAL...808
INSTALLATION...808
WORK EQUIPMENT CYLINDER OVERHAUL...809
LOADER AND BACKHOE CYLINDERS...809
DISASSEMBLY...809
ASSEMBLY...811
SWING CYLINDERS...814
DISASSEMBLY...814
ASSEMBLY...815
90 OTHERS...819
HYDRAULIC CIRCUIT...821
1 OF 4...821
2 OF 4...823
3 OF 4...825
4 OF 4...827
ELECTRICAL SCHEMATIC...829
WIRING - 1 OF 7...829
WIRING - 2 OF 7...831
WIRING - 3 OF 7...833
WIRING - 4 OF 7...835
WIRING - 5 OF 7...837
WIRING - 6 OF 7...839
WIRING - 7 OF 7...841
LEGEND FOR WIRING SCHEMATIC...843
Komatsu Backhoe Loader WB146 Repair Service Manual
