Komatsu Wheel Loader WA65-5 WA70-5 WA80-5 service & repair manual

Description Komatsu Wheel Loader WA65-5 WA70-5 WA80-5 service & repair manual

Komatsu Wheel Loader WA65-5, WA70-5, WA80-5 pdf workshop service repair manual + operation & maintenance manual

Serial number H50051 and up

MANUAL CONTENT:
GENERAL
Dimensions, weights and operating data
Lubricants and operating mediums
Basic procedures of maintenance
Oil
Fuel
Coolant
Grease
Storing oil and fuel
Filters
Biodegradable hydraulic oils and lubricants
Outline of electric system
Torque list - screws and nuts

STRUCTURE AND FUNCTION
Powertrain
Closed circuit
Hydraulic drive system 20Km/h
Hydraulic drive system 30Km/h
Variable displacement pump
Regulating valve
Charge pressure limiting valve
Control cylinder
4/3 Way valve with direction control solenoids
Pressure cut-off valve
Safety-/charge valve
Towing
Variable displacement motor
Drive shaft
Axle mounting - front axle
Axle mounting - rear axle
WA65-5 / WA70-5: Front axle
With outer disc brake as service brake and parking brake
WA80-5: Front axle
With inner disc brake as service brake and outer disc brake as parking brake
Rear axle with transfer box
Transfer box TB172
Limited slip differential (locking value 25%)
Locking differential (locking value 100%)
Wheel hub, front and rear axle
Service and parking brake, front axle
Service brake, front axle
Parking brake, front axle
Sevice and parking brake circuit
Service brake assembly
Inch-brake Valve
Steering articulation joint
Steering system
Hydraulic circuit diagram of steering system
Priority valve
Orbit-roll-valve
Steering relief valve
Work equipment hydraulic
Travel, steering and work hydraulics
Work equipment hydraulic
Travel, steering and work hydraulics
PPC-Valve
Operation of PPC-valve
Servo pressure regulating valve
Emergency Lowering System
Main control valve
Lift cylinder
Dump cylinder
Steering cylinder
Lifting frame with quick-coupler
Quick-coupler
Monitor display
Sensors
Engine oil pressure sensor
Fuel level sensor
Engine coolant temperature sensor
Brake oil reservoir sensor
Ribbon heater
Engine stop / start / preheating circuit
Electrical fuses and relays
Fuses
Relays
Engine room
Electrical diagrams

TESTING AND ADJUSTING
Standard value table for engine
Standard value table for chassis
Standard value table for electrical parts
Test certificate
Valve lash clearance
Engine compression test
Injection nozzle pressure
Fuel injection timing
V-belt tension
Engine RPM
RPM-dependant drive take-up
Engine stall torque RPM
Engine stall torque RPM, test with the hydrostatic drive
Engine stall torque RPM, test with hydrostatic drive and working hydraulics
Feed pump (and servo oil pressure for WA80-5)
Hydraulic pressure cut-off
Working hydraulic pressure
Steering oil pressure
Operating time for steering wheel
Operating force of steering wheel
Disc brake (foot brake WA80-5)
Brake (WA65-5 and WA70-5)
Inch valve - basic adjustment
Brake efficiency
Measuring the stopping distance
Parking brake efficiency
Travel speed

DISASSEMBLY AND ASSEMBLY
Comments
Starter assembly
Removal of starter assembly
Installation of starter assembly
Alternator assembly
Removal of alternator assembly
Installation of alternator assembly
Water pump assembly
Removal of water pump assembly
Installation of water pump assembly
Engine cover assembly
Removal of engine cover assembly
Installation of engine cover assembly
Engine cover support assembly
Removal of engine cover support assembly
Installation of engine cover support assembly
Engine assembly
Removal of engine assembly
Installation of engine assembly
Clutch assembly
Removal of clutch assembly
Installation of clutch assembly
Radiator assembly
Removal of radiator assembly
Installation of radiator assembly
Fan assembly
Removal of fan assembly
Installation of fan assembly
Inch brake valve assembly
Removal of inch brake valve assembly
Installation of inch brake valve assembly
Priority valve assembly
Removal of priority valve assembly
Installation of priority valve assembly
Orbit-roll-valve assembly
Removal of orbit-roll-valve assembly
Installation of orbit-roll-valve assembly
Counterweight assembly
Removal of counterweight assembly
Installation of counterweight assembly
Control valve assembly
Main control valve assembly
Removal of main control valve assembly
Installation of main control valve assembly
Pilot valve assembly (WA80-5)
Removal of pilot valve assembly
Installation of pilot valve assembly
Monitor assembly
Removal of monitor assembly
Installation of monitor assembly
Articulated joint assembly
Removal of articulated joint assembly
Installation of articulated joint assembly
Variable motor assembly
Removal of variable motor assembly
Installation of variable motor assembly
Rear axle assembly
Removal of rear axle assembly
Installation of rear axle assembly
Front axle assembly
Removal of front axle assembly
Installation of front axle assembly
Front axle
Brake disc group
Brake caliper
Hydraulic principle of operation
Differential position
Mechanical principle of operation
Caliper removal
Caliper reassembly
Replacement of guide protective covers
Pad replacement
Brake group - wheel shaft
Rear axle
Trunnions group and flange
Epicyclic reduction gear group
Wheel hub
Wheel shaft
Differential support group
Bevel gear marking test
Differential locking group
Differential group

OTHERS
Hydraulic circuit diagram
Electrical wiring diagram

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