Komatsu Backhoe Loader WB142-5 service & repair manual

Description Komatsu Backhoe Loader WB142-5 service & repair manual

Komatsu Backhoe Loader WB142-5 pdf workshop service repair manual + operation & maintenance manual

Serial number A13001 and up

Technical data, specifications, testing, troubleshooting, maintenance, electrical diagrams, hydraulic schematics, adjusting, assembly, disassembly, removal, installation instructions and other information

MANUAL CONTENT:
GENERAL
SPECIFICATION DRAWING
SPECIFICATIONS
MACHINE DIMENSIONS AND WEIGHTS
BACKHOE ARM
MACHINE SYSTEMS SPECIFICATIONS
ENGINE
ELECTRICAL SYSTEM
SERVICE REFILL CAPACITIES
TRANSMISSION
TOTAL MASS
STANDARD BUCKET CAPACITY
LOADER
TIRE PRESSURE
WEIGHT TABLE
FUEL, COOLANT, AND LUBRICANTS
PROPER SELECTION ACCORDING TO THE AMBIENT TEMPERATURE
GREASE
FUEL REMARKS
HOMOLOGATED (HEES) SYNTHETIC LUBRICANTS
LUBRICATION DIAGRAMS
GENERAL VIEW

STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
POWER TRAIN
SYSTEM OVERVIEW
4 WHEEL DRIVE SYSTEM
TRANSMISSION COMPONENTS
CONVERTER AND TRANSMISSION CIRCUIT DIAGRAM
TRANSMISSION
CASE
TRANSMISSION INTERNAL VIEW
GEAR SHIFTER AND FILTERING SYSTEM
CLUTCH PACKS AND DRIVEN GEAR SET
4 WHEEL DRIVE SHAFT
CONTROL VALVE BLOCK
TRANSMISSION CASE SPECIFICATIONS
INTERNAL SPECIFICATIONS
GEAR SHIFTER AND COMPONANTS SPECIFICATIONS
FRONT AXLE ASSEMBLY
DIFFERENTIAL
FINAL DRIVE END
STEERING CYLINDER
AXLE CARRIER SPECIFICATIONS
AXLE END SPECIFICATIONS
STEERING UNIT CYLINDER SPECIFICATIONS
REAR AXLE ASSEMBLY
DIFFERENTIAL
AXLE END
AXLE CARRIER SPECIFICATIONS
AXLE END SPECIFICATIONS
REAR BRAKES
BRAKE SPECIFICATIONS
DIFFERENTIAL LOCK
LOCK SPECIFICATIONS
HYDRAULIC SYSTEM
HYDRAULIC CIRCUIT DIAGRAM
HYDRAULIC PUMP
LOADER 3 - SPOOL VALVE
LOADER SPOOL VIEW
BACKHOE CONTROL VALVE
BACKHOE SPOOL VIEW
SOLENOID VALVE (ST1 VALVE LOCK - DIFFERENTIAL LOCK - BACKHOE BOOM LOCK)
MASTER CYLINDER (BRAKES)
LOADER CYLINDERS
ARM CYLINDERS
BUCKET CYLINDER
ARM CYLINDER TOLERANCE
BUCKET CYLINDER TOLERANCE
BACKHOE CYLINDERS
BOOM cylinder
ARM cylinder
BUCKET SPECIFICATIONS
OUTRIGGER SPECIFICATIONS
BOOM SWING SPECIFICATIONS
BOOM CYLINDER TOLERANCE
ARM CYLINDER TOLERANCE
BUCKET CYLINDER TOLERANCE
BOOM SWING CYLINDER TOLERANCE
OUTRIGGERS TOLERANCE
PIN AND BUSHING CLEARANCES
LOADER WORK EQUIPMENT
BACKHOE WORK EQUIPMENT

STANDARD VALUE TABLES
STANDARD VALUE TABLE FOR ENGINE
STANDARD VALUE TABLE FOR CHASSIS

TESTING AND ADJUSTING
BLEED AIR FROM CIRCUITS
BLEED AIR FROM BRAKING CIRCUIT
BLEED AIR FROM HYDRAULIC CYLINDER
BLEED AIR FROM STEERING CIRCUIT
ACCELERATOR PEDAL AND THROTTLE LEVER
ACCELERATOR PEDAL TRAVEL
THROTTLE LEVER TRAVEL
BRAKE SYSTEM
CONTROL
ADJUSTMENT
CHECKS
LEAKAGE CHECKS
INDIVIDUAL PUMP CHECK
BRAKE ASSEMBLY LEAKAGE
PARKING BRAKE ADJUSTMENT
HYDRAULIC CIRCUIT
INTRODUCTION
3-SPOOL VALVE
7-SPOOL VALVE
MAIN RELIEF VALVE
SETTING (PRESSURE CUT-OFF)
P2 PRESSURE RELIEF VALVE CALIBRATION
SECONDARY VALVES SETTING
CALIBRATION VALUES FOR 3-ELEMENT CONTROL VALVE
SECONDARY VALVES
CALIBRATION VALUES FOR 7-ELEMENT CONTROL VALVE
SECONDARY VALVES
SETTING THE MAIN RELIEF AND REDUCING VALVES
SECONDARY VALVES AND P2 PUMP RELIEF VALVE
CHECKING LOAD SENSING SIGNAL (LS VALVE)
UNLOADING VALVE CALIBRATION
CHECKING COMPENSATED FLOW VALVE
OPERATION OF THE PRIORITY VALVE
TESTING AND SETTING STEERING SYSTEM PRESSURE
CONTROL
SETTING
CHECKING FOR LEAKS IN THE STEERING CYLINDERS
POWER TRAIN
CONVERTER OIL PRESSURE
CLUTCH ENGAGEMENT PRESSURE
CLUTCH FUNCTION
MACHINE PREPARATION
CONTROL
HYDRAULIC DRIFT
LOADER
BOOM CIRCUIT
BUCKET CIRCUIT
BACKHOE
BOOM CIRCUIT
ARM CIRCUIT
BUCKET CIRCUIT
OUTRIGGERS TESTING

MAINTENANCE STANDARD
POINTS TO REMEMBER WHEN TROUBLESHOOTING
SEQUENCE OF EVENTS IN TROUBLESHOOTING
PRECAUTIONS WHEN CARRYING OUT MAINTENANCE
PRECAUTIONS WHEN HANDLING ELECTRICAL EQUIPMENT
HANDLING ELECTRONIC CONTROL UNIT
POINTS TO REMEMBER WHEN TROUBLESHOOTING ELECTRICAL CIRCUITS
HOW TO READ ELECTRIC WIRE CODE
CLASSIFICATION BY COLOR AND CODE
POINTS TO REMEMBER WHEN HANDLING HYDRAULIC EQUIPMENT
CHECKS BEFORE TROUBLESHOOTING
TROUBLESHOOTING GUIDE
FRONT AXLE
REAR AXLE
TRANSMISSION

DISASSEMBLY AND ASSEMBLY
REMOVAL AND INSTALLATION OF COMPONENTS
REMOVAL
INSTALLATION
OVERHAUL OF COMPONENTS
DISASSEMBLY PROCEDURES
ASSEMBLY PROCEDURES
PRECAUTIONS WHEN CARRYING OUT AN OPERATION
SPECIAL TOOL LIST
CONNECTOR REPAIR PROCEDURES
CONTACT TERMINAL REMOVAL (HD30 TYPE)
CRIMPING CONTACT TERMINAL (HD30 TYPE)
INSERTION OF CONTACT TERMINAL (HD30 TYPE)
CONTACT TERMINAL REMOVAL (DT TYPE)
CRIMPING CONTACT TERMINAL (DT TYPE)
INSERTION OF CONTACT TERMINAL (DT TYPE)
STRIPPING INSULATION

ELECTRICAL SCHEMATIC
CONNECTOR DESCRIPTION
SIDE INSTRUMENT PANEL
FRONT INSTRUMENT PANEL
FUSES, SWITCHES AND RELAYS
WIRE HARNESS
SWITCHES
TRANSMISSION HARNESS

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