Komatsu WA800-3 work shop manual.
This is a factory work shop manual
pages 1224
This factory service manual has easy-to-read text sections with top quality diagrams, pictures and illustrations. The step by step instructions show you how to fault find or complete any repair or overhaul, correctly and efficiently, saving time and avoiding cockups. All specifications
and tolerances are listed. Functions of components are also explained.

Komatsu WA800-3 Wheel Loader---50001 and up

Service Repair Manual Covers:
Forward and safety
General
General assembly drawing.... .Ol-2
Specifications .............. 01-3
Weight table ................ 01-6
List of lubricant and water. 01-8

Structure and Function
Power train ..................10- 2
Power train system ...........10- 3
Engine control ...............10- 4
Servo cylinder ...............10- 5
Radiator and cooler ..........10- 9
Damper........................10-10
Torque converter and transmission piping .....10-11
Transmission hydraulic diagram ...............10-12
Transmission hydraulic
circuit diagram ..............................10-13
Torque converter .............................10-14
Transmission .................................10-19
Transfer .....................................10-27
Transmission control valve ...................10-28
Torque convertor oil cooler ..................10-46
Drive shaft ..................................10-47
Center support ...............................10-48
Axle..........................................10-49
Final drive ..................................10-54
Axle mount ...................................10-56
Center hinge pin..............................10-58
Tire and wheel................................10-59
Steering piping diagram ......................10-60
Steering column ..............................10-61
Joystick linkage .............................10-61-1
Steering pump.................................10-62
Switch pump ..................................10-64
Steering demand valve ........................10-66
Steering unit (Orbit-roll valve) .............10-77
Proportional solenoid valve ..................10-79-1
EPC valve ....................................10-79-2
Rotary valve .................................10-79-3
Tow-way restrictor valve .....................10-80
Diverter valve ...............................10-81
Brake piping .................................10-86
Brake circuit diagram.........................10-88
Brake valve ..................................10-90
Charge valve .................................10- 95
Accumulator (for brake) ......................10- 99
Slack adjuster ...............................10-100
Brake ........................................10-103
Parking brake ................................10-104
Spring cylinder ..............................10-106
Parking brake solenoid valve .................10-107
Hydraulic piping .............................10-108
Work equipment hydraulic circuit diagram .. ..10-112
Work equipment lever linkage .................10-115
Hydraulic tank ...............................10-116
Main piston pump..............................10-119
ES valve .....................................10-127
Servo valve ..................................10-129
PPC valve ....................................10-132
PPC relief valve .............................10-136
Accumulator (for PPC valve) ..................10-137
Work equipment control lever .............. 10-37-1
Work equipment EPC valve .................. ..10-137-4
Work equipment neutral lock
solenoid valve ...............................10-137-7
Main control valve ...........................10-138
Lubrication of work equipment ................10-152
Work equipment linkage .......................10-154
Bucket positioner and boom kick-out ..........10-156
Operation of proximity switch ................10-158
Cab...........................................10-162
ROPS canopy ..................................10-163
Air conditioner ..............................10-164
Electric circuit diagram .....................10-167
Machine monitor system........................10-168
Main monitor .................................10-170
Maintenance monitor...........................10-176
Multi monitor system (if equipped) ......... .10-177-1
Work equipment control system ......... ......10-177-23
Work equipment controller................... .10-177-29
Engine starting circuit ......................10-178
Engine stop circuit ..........................10-179
Preheating circuit ...........................10-180
Electric transmission control.................10-181
Kick-down, hold switch .......................10-184
Joystick steering system .....................10-184-1
AJSS (Advanced joystick
steering system) .............................10-184-6
Electric parking brake control ...............10-185

Testing and Adjusting
Standard value table
Standard value table for engine.............. 20- 2
Standard value table for chassis.. ...........20- 3
Standard value table for electrical parts ....20- 9
Testing and adjusting ........................20-101
Trouble shooting..............................20-201

Disassembly and Assembly..30-172 .............30-268
Maintenance Standard......40-2................40-56
Others Electric circuit diagrams...90-3.......90-35
And More......