Komatsu Wheel Loader WA120L-3MC service & repair manual

Description Komatsu Wheel Loader WA120L-3MC service & repair manual

Komatsu Wheel Loader WA120L-3MC pdf workshop service repair manual + operation & maintenance manual

Serial number 54104 and up

MANUAL CONTENT:
GENERAL
General assembly drawing
Specifications
Weight table
List of lubricant and water

STRUCTURE AND FUNCTION
Power train
Power train system
Torque converter, transmission piping
Transmission hydraulic system diagram
Transmission hydraulic circuit diagram
Torque converter
Transmission
Transmission control valve
Transmission control
Drive shaft
Axle
Final drive
Axle mount
Center hinge pin
Steering piping
Steering column
Priority valve
Steering valve (orbit-roll)
Brake piping
Brake control
Brake booster
Brake
Parking brake control
Parking brake
Hydraulic piping
Work equipment hydraulic system diagram
Work equipment hydraulic circuit diagram
Hydraulic tank
PPC valve
Accumlator
Main control valve
Work equipment linkage
Bucket
Bucket positioner and boom kick-out
Proximity switch
ROPS cab
Air conditioner
ECSS (Electronic controlled suspension system)
Electrical wiring diagram
Air conditioning and heater electrical diagram
Central pannel
Sensor
Engine starting circuit
Engine stop circuit
Fuel cut-off solenoid
Automatic preheating circuit
Transmission auto-shift control system

TESTING AND ADJUSTING
Standard value table for engine
Standard value table for chassis
Tools for testing, adjusting, and troubleshooting
Adjusting valve clearance
Testing and adjusting fuel injection timing
Measuring exhaust color
Measuring blow-by pressure
Measuring engine oil pressure
Measuring engine speed
Adjusting engine stop solenoid
Measuring accelerator pedal
Measuring operating force, travel of speed lever
Measuring stall speed
Measuring torque converter, transmission, oil pressure
Method of operating emergency manual solenoid valve
Testing and adjusting steering wheel
Measuring steering oil pressure
Measuring operating force, travel of brake pedal
Testing and adjusting brake pedal linkage
Measuring brake performance
Measuring brake oil pressure
Testing for brake disc wear
Bleeding air from brake system
Measuring parking brake performance
Testing and adjusting parking brake linkage
Testing parking brake disc wear
Measuring parking brake disc wear
Adjusting work equipment PPC valve
Measuring work equipment hydraulic pressure
Measuring work equipment
Testing and adjusting bucket positioner
Testing and adjusting boom kick-out

TROUBLESHOOTING

DISASSEMBLY AND ASSEMBLY
PRECAUTIONS WHEN CARRYING OUT OPERATION
SPECIAL TOOL LIST
STARTING MOTOR
ALTERNATOR
FUEL INJECTION PUMP
ENGINE OIL COOLER
WATER PUMP
NOZZLE HOLDER
THERMOSTAT
TURBOCHARGER
CYLINDER HEAD
RADIATOR
ENGINE
TORQUE CONVERTER CHARGING PUMP
TORQUE CONVERTER, TRANSMISSION
TORQUE CONVERTER
TRANSMISSION
CLUTCH PACK
TRANSMISSION CONTROL VALVE
TRANSMISSION SOLENOID VALVE
TRANSMISSION ACCUMULATOR VALVE
DRIVE SHAFT
FRONT AXLE
REAR AXLE
DIFFERENTIAL
AXLE HOUSING
CENTER HINGE PIN
PRIORITY VALVE

MAINTENANCE STANDARD
Engine mount, transmission mount
Torque converter charging pump
Torque converter
Transmission
Transmission control valve
Accumulator valve
Differential
Final drive
Axle mount
Center hinge pin
Steering column
Priority valve
Steering cylinder mount
Brake booster
Brake
Parking brake
Hydraulic pump and PPC pump
Main control valve
PPC valve
Steering cylinder, hydraulic cylinder
Work equipment linkage
Bucket
Bucket positioner and boom kick-out

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