








$25.00
Generation
5Language
EnglishModel of Truck
WB146-5Region
USATruck Class
WB146Illustrated factory Workshop Manual for Komatsu Backhoe Loaders Models WB146-5.
This manual will assist you in diagnosing, repairing, and adjusting for your backhoe loader.
You can use a Windows, Mac, or Android device to view this manual. You only need to have a PDF reader installed.
Covered Models (USA):
WB146-5 (SN: A23001-)
Format: PDF, 586 pages
Language: English
Table of Contents:
FOREWORD
SAFETY
GENERAL
HOW TO READ THE SHOP MANUAL
HOISTING INSTRUCTIONS
PUSH PULL COUPLER
COATING MATERIALS
STANDARD TIGHTENING TORQUE
ELECTRIC WIRE CODE
CONVERSION TABLES
GENERAL
SPECIFICATION DRAWING
MACHINE SYSTEMS SPECIFICATIONS
WEIGHT TABLE
FUEL, COOLANT, AND LUBRICANTS
HOMOLOGATED (HEES) SYNTHETIC LUBRICANTS
LUBRICATION DIAGRAMS
STRUCTURE, FUNCTION AND MAINTENANCE
POWER TRAIN
TRANSMISSION DIAGRAM
TRANSMISSION
FRONT AXLE
REAR AXLE
HYDRAULIC PUMP
DELIVERY CONTROL VALVE
MAIN CONTROL VALVE
CLSS
STEERING UNIT
PPC VALVE
LOADER
OUTRIGGER
BACKHOE
SOLENOID VALVE
LOADER CYLINDERS
BACKHOE CYLINDERS
WORK EQUIPMENT
AIR CONDITIONING
TESTING, ADJUSTING ANDTROUBLESHOOTING
STANDARD VALUE TABLE
SPECIAL TOOLS
ENGINE SPEED
VALVE CLEARANCE
AC COMPRESSOR BELT TENSION
BLEED AIR FROM CIRCUITS
ACCELERATOR PEDAL AND LEVER
BRAKE SYSTEM
PARKING BRAKE ADJUSTMENT
HYDRAULIC CIRCUIT
RELIEF VALVES
SETTING RELIEF VALVES
LS DIFFERENTIAL PRESSURE
PPC SUPPLY PRESSURE
PC VALVE
STEERING CONTROL SYSTEM
STEERING CYLINDER
POWER TRAIN GROUP
TRANSMISSION CLUTCH FUNCTION
HYDRAULIC DRIFT
AIR CONDITIONING
TROUBLESHOOTING GUIDE
FUSES AND RELAYS
DISASSEMBLY AND ASSEMBLY
HOW TO USE THIS MANUAL
PRECAUTIONS WHEN PERFORMING OPERATIONS
SPECIAL TOOL LIST
CONNECTOR REPAIR PROCEDURES
BLEED AIR FROM CIRCUITS
ENGINE HOOD
FRONT GUARD
RADIATOR
AIR CONDITIONING CONDENSER
MUFFLER
AIR FILTER
TURBOCHARGER
REFRIGERANT COMPRESSOR
REFRIGERANT COMPRESSOR BELT
EXHAUST STACK
OPERATOR’S SEAT
CAB HEATING AND COOLING SYSTEM
BATTERY
FUEL TANK
STEERING AND FRONT DASH ASSEMBLY
CAB
HYDRAULIC OIL TANK
HYDRAULIC PUMP
TRANSMISSION
TRANSMISSION OVERHAUL PROCEDURES
ENGINE
STEERING SOLENOID VALVE
FRONT AXLE ASSEMBLY
FRONT AXLE OVERHAUL PROCEDURES
REAR AXLE ASSEMBLY
REAR AXLE OVERHAUL PROCEDURES
FRONT LOADER PPC VALVE
FRONT-END LOADER ASSEMBLY
BACKHOE PPC VALVE
PPC VALVE SUPPORT RELEASE CABLES
PPC VALVE GAS STRUT
CONTROL VALVE
PPC VALVE
BACKHOE ASSEMBLY
WORK EQUIPMENT CYLINDER OVERHAUL
OTHERS
HYDRAULIC CIRCUIT
ELECTRICAL SCHEMATIC
This manual will assist you in diagnosing, repairing, and adjusting for your backhoe loader.
You can use a Windows, Mac, or Android device to view this manual. You only need to have a PDF reader installed.
Covered Models (USA):
WB146-5 (SN: A23001-)
Format: PDF, 586 pages
Language: English
Table of Contents:
FOREWORD
SAFETY
GENERAL
HOW TO READ THE SHOP MANUAL
HOISTING INSTRUCTIONS
PUSH PULL COUPLER
COATING MATERIALS
STANDARD TIGHTENING TORQUE
ELECTRIC WIRE CODE
CONVERSION TABLES
GENERAL
SPECIFICATION DRAWING
MACHINE SYSTEMS SPECIFICATIONS
WEIGHT TABLE
FUEL, COOLANT, AND LUBRICANTS
HOMOLOGATED (HEES) SYNTHETIC LUBRICANTS
LUBRICATION DIAGRAMS
STRUCTURE, FUNCTION AND MAINTENANCE
POWER TRAIN
TRANSMISSION DIAGRAM
TRANSMISSION
FRONT AXLE
REAR AXLE
HYDRAULIC PUMP
DELIVERY CONTROL VALVE
MAIN CONTROL VALVE
CLSS
STEERING UNIT
PPC VALVE
LOADER
OUTRIGGER
BACKHOE
SOLENOID VALVE
LOADER CYLINDERS
BACKHOE CYLINDERS
WORK EQUIPMENT
AIR CONDITIONING
TESTING, ADJUSTING ANDTROUBLESHOOTING
STANDARD VALUE TABLE
SPECIAL TOOLS
ENGINE SPEED
VALVE CLEARANCE
AC COMPRESSOR BELT TENSION
BLEED AIR FROM CIRCUITS
ACCELERATOR PEDAL AND LEVER
BRAKE SYSTEM
PARKING BRAKE ADJUSTMENT
HYDRAULIC CIRCUIT
RELIEF VALVES
SETTING RELIEF VALVES
LS DIFFERENTIAL PRESSURE
PPC SUPPLY PRESSURE
PC VALVE
STEERING CONTROL SYSTEM
STEERING CYLINDER
POWER TRAIN GROUP
TRANSMISSION CLUTCH FUNCTION
HYDRAULIC DRIFT
AIR CONDITIONING
TROUBLESHOOTING GUIDE
FUSES AND RELAYS
DISASSEMBLY AND ASSEMBLY
HOW TO USE THIS MANUAL
PRECAUTIONS WHEN PERFORMING OPERATIONS
SPECIAL TOOL LIST
CONNECTOR REPAIR PROCEDURES
BLEED AIR FROM CIRCUITS
ENGINE HOOD
FRONT GUARD
RADIATOR
AIR CONDITIONING CONDENSER
MUFFLER
AIR FILTER
TURBOCHARGER
REFRIGERANT COMPRESSOR
REFRIGERANT COMPRESSOR BELT
EXHAUST STACK
OPERATOR’S SEAT
CAB HEATING AND COOLING SYSTEM
BATTERY
FUEL TANK
STEERING AND FRONT DASH ASSEMBLY
CAB
HYDRAULIC OIL TANK
HYDRAULIC PUMP
TRANSMISSION
TRANSMISSION OVERHAUL PROCEDURES
ENGINE
STEERING SOLENOID VALVE
FRONT AXLE ASSEMBLY
FRONT AXLE OVERHAUL PROCEDURES
REAR AXLE ASSEMBLY
REAR AXLE OVERHAUL PROCEDURES
FRONT LOADER PPC VALVE
FRONT-END LOADER ASSEMBLY
BACKHOE PPC VALVE
PPC VALVE SUPPORT RELEASE CABLES
PPC VALVE GAS STRUT
CONTROL VALVE
PPC VALVE
BACKHOE ASSEMBLY
WORK EQUIPMENT CYLINDER OVERHAUL
OTHERS
HYDRAULIC CIRCUIT
ELECTRICAL SCHEMATIC
General
Generation
5Language
EnglishModel of Truck
WB146-5Region
USATruck Class
WB146Type of Document
Workshop ManualType of Truck
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