Komatsu Wheel Loader WA250-3 service & repair manual

Description Komatsu Wheel Loader WA250-3 service & repair manual

Komatsu Wheel Loader WA250-3 pdf workshop service repair manual + operation & maintenance manual

Serial numbers:
A75001 and up
50001 and up

MANUAL CONTENT:
GENERAL
General assembly drawing
Specifications
Weight table
List of lubricants and coolant

STRUCTURE AND FUNCTION
Power train
Path of power transmission
Torque converter, transmission piping
Torque converter, transmission hydraulic system diagram
Torque converter, transmission hydraulic circuit diagram
Torque converter
Torque converter oil filter
Transmission
Transmission control valve
Drive shaft
Axle
Final drive
Axle mount
Center hinge pin
Steering piping
Steering column
Priority valve
Steering valve (orbit-roll)
2-way restrictor valve
Brake piping
Power master cylinder
Brake
Parking brake control
Hydraulic piping
Steering, hydraulic pump hydraulic system diagram
Steering, hydraulic pump hydraulic circuit diagram
Work equipment control lever linkage
Hydraulic tank
Main control valve
Work equipment linkage
Bucket
Bucket positioner and boom kickout
Cab
Machine monitor system
Main monitor
Maintenance monitor display function
Sensor and switches
Engine starting circuit
Engine stop circuit
Preheating circuit
Starting aid
Electrical transmission control
Combination switch
Transmission cut-off function
Parking brake neutralizer relay function
Kick-down switch
Kick-down electric circuit diagram
Transmission auto shift control system (if equipped)

TESTING AND ADJUSTING
Standard value table for engine
Standard value table for chassis
Standard value table for electrical parts
Tools for testing, adjusting, and troubleshooting
Adjusting valve clearance
Measuring compression pressure
Testing and adjusting fuel injection timing
Measuring exhaust color
Measuring blow-by pressure
Testing and adjusting fan belt tension
Measuring engine speed
Method for adjusting engine stop motor cable
Adjusting engine stop solenoid
Measuring engine oil pressure
Measuring intake air pressure (Boost pressure)
Measuring exhaust gas temperature
Measuring accelerator pedal
Measuring shift lever
Measuring stall speed
Measuring torque converter, transmission, oil pressure
Method of operating emergency manual spool
Testing and adjusting steering wheel
Measuring steering oil pressure
Measuring brake pedal
Testing and adjusting brake pedal linkage
Measuring brake performance
Measuring brake oil pressure
Measuring wear of brake disc
Bleeding air from brake system
Measuring parking brake performance
Testing and adjusting parking brake linkage
Testing parking brake piston storoke
Measuring wear of parking brake disc
Measuring and adjusting work equipment control lever
Measuring storoke of work equipment valve apool
Measuring work equipment hydraulic pressure
Measuring work equipment
Testing and adjusting bucket positioner
Testing and adjusting boom kick-out
Adjusting main monitor (speedometer module)
Checking for abnormality in fuel level sensor

TROUBLESHOOTING

DISASSEMBLY AND ASSEMBLY
PRECAUTIONS DURING OPERATION
PRECAUTIONS WHEN CARRYING OUT REMOVAL WORK
PRECAUTIONS WHEN CARRYING OUT INSTALLATION WORK
PRECAUTIONS WHEN COMPLETING THE OPERATIONS
OTHER PRECAUTIONS
SPECIAL TOOL LIST
ENGINE
ALTERNATOR
CYLINDER HEAD
ENGINE OIL COOLER
FUEL INJECTION PUMP
NOZZLE HOLDER
STARTING MOTOR
THERMOSTAT
TURBOCHARGER
WATER PUMP
COVERS, LADDER AND ENGINE HOOD
RADIATOR, HYDRAULIC COOLER
MUFFER AND AIR CLEANER
ENGINE
TORQUE CONVERTER CHARGING PUMP
TORQUE CONVERTER, TRANSMISSION
TORQUE CONVERTER
TRANSMISSION
CLUTCH PACK
PARKING BRAKE
TRANSMISSION CONTROL VALVE
TRANSMISSION SOLENOID VALVE
ACCUMULATOR VALVE
DRIVE SHAFT
FRONT AXLE
REAR AXLE
DIFFERENTIAL
AXLE HOUSING
CENTER HINGE PIN
STEERING VALVE
DISASSEMBLY OF ROTOR
ASSEMBLY OF CONTROL SIDE
ASSEMBLY OF ROTOR
PRIORITY VALVE
STEERING CYLINDER
POWER MASTER CYLINDER
PARKING BRAKE DISC
HYDRAULIC TANK
HYDRAULIC FILTER
WORK EQUIPMENT, STEERING PUMP
MAIN CONTROL VALVE
HYDRAULIC LINES
PPC VALVE TO MAIN CONTROL VALVE
PPC VALVE
CYLINDER
BUCKET CYLINDER
BOOM CYLINDER
HYDRAULIC CYLINDER
WORK EQUIPMENT
ECSS SYSTEM
ECSS CIRCUIT - REMAINING PRESSURE REMOVAL
ECSS SOLENOID VALVE
ECSS CONTROL VALVE
COUNTERWEIGHT
FUEL TANK
CAB (ROPS)
MONITOR
MAIN MONITOR
MAINTENANCE MONITOR
AIR CONDITIONER
AIR CONDITIONER UNIT
CONDENSER
DRY RECIEVER
COMPRESSOR

MAINTENANCE STANDARD
TRANSMISSION, ENGINE MOUNT
TORQUE CONVERTER CHARGING PUMP
TORQUE CONVERTER
TRANSMISSION
FORWARD, REVERSE CLUTCH
1ST, 3RD CLUTCH
2nd, 4th CLUTCH
TRANSMISSION CONTROL VALVE
UPPER VALVE
LOWER VALVE
SOLENOID VALVE
ACCUMULATOR VALVE
DRIVE SHAFTS
DIFFERENTIAL
FINAL DRIVE
AXLE MOUNT
CENTER HINGE PIN
STEERING COLUMN
PRIORITY VALVE
MASTER CYLINDER
BRAKE
PARKING BRAKE
HYDRAULIC PUMP
MAIN CONTROL VALVE
2-SPOOL VALVE
3-SPOOL VALVE
PPC VALVE
HYDRAULIC CYLINDER
STEERING CYLINDER MOUNT
WORK EQUIPMENT LINKAGE
BUCKET
BUCKET POSITIONER AND KICK-OUT

OTHERS
ELECTRICAL WIRING DIAGRAM

Engine S6D95, S6D102 series workshop service repair manual