Factory Shop Manual For Komatsu Wheel Loader. Manual Contains Illustrations, Instructions, Diagrams For Step By Step Remove And Install, Assembly And Disassembly, Service, Inspection, Repair, Troubleshooting, Tune-Ups.

Format: PDF
Language: English
Pages: 711
Number: JEBM000200 (april 1991)
Wiring Diagrams: Yes
Hydraulic Diagrams: Yes

Model

Komatsu Wheel Loader
WA420-1
SN H20001 And Up

Contents

-STRUCTURE AND FUNCTION
General
Hydraulic Circuit For Power Tram
Hydraulic Circuit Diagram For Power Train
Torque Converter And Transmission Piping
Torque Converter Charging Pump
Torque Converter
Torque Converter Oil Filter
Torque Converter Oil Cooler
Torque Converter Relief Valve
Transmission
Transmission Control Valve
Transmission Pilot Filter
Transfer
Drive Shaft
Axle Mount
Axle And Differential
Final Drive
Tire And Wheel
Steering Piping
Hydraulic Circuit Diagram For Steering
Steering Control System
Steering Cylinder
Steering Column And Orbit-Roll
Center Hinge Pin
Emergency Steering Pump
Diverter Valve
Security Valve
Air Piping
Air Circuit Diagram
Air Tank
Safety Valve
Brake Valve
Air Dryer
Air Governor
Two-Way Valve
Brake Chamber
Slack Adjuster
Brake
Parking Brake
Parking Brake Solenoid Valve
Spring Cylinder
Brake Caliper
Hydraulic Piping
Hydraulic Circuit Diagram
Hydraulic Tank
Hydraulic Pump
Main Control Valve
Hydraulic Cylinder
Bucket Linkage
Bucket Positioner And Boom Kick-Out
Electrical Wiring Diagram Circuit
Engine Starting Circuit
Engine Stop Circuit
Electrical Transmission Control
Electronic Vehicle Monitoring System
Bucket Positioner And Boom Kick-Out
-TESTING AND ADJUSTING
Standard Value Table For Engine
Standard Value Table For Chassis
Standard Value Table For Electrical System
Tool List For Testing And Adjusting
Adjusting Valve Clearance
Testing And Adjusting Fuel Injection Timing
Measuring Engine Oil Pressure And Temperature
Measuring Blow-By Pressure
Measuring Exhaust Gas Color
Measuring Accelerator Pedal
Measuring Engine Speed
Measuring Oil Pressure Of Torque Converter
And Transmission
Measuring Shift Lever
Method For Operation Of Emergency Manual Spool
Tire And Wheel
Measuring Steering Wheel Play
Measuring Operating Face Of Steering Wheel
Operating Time Of Steering Wheel
Testing And Adjusting Steering Control
Measuring Steering Oil Pressure
Measuring Brake Pedal
Measuring Air
Brake Performance
Checking Brake Oil Pressure
Measuring Wear Of Brake Disc
Air Bleeding From Brake Line
Parking Brake Performance
Checking And Adjusting Parking Brake
Measuring Dump And Lift Control Levers
Measuring Hydraulic Pressure
Measuring Lift Arm And Bucket
Measuring Hydraulic Drift Of Lift Arm And Bucket
Testing And Adjusting Bucket Positioner
Testing And Adjusting Boom Kick-Out
Adjusting Speedometer Module In The Vehicle Monitor
-TROUBLESOOTING
Electrical Circuit System
Electrical Wiring Diagram
Connector Terminal Numbers
Precaution When Handling Connector
Checks Before Troubleshooting
Judgment On Power Train
Method Of Using Yes-No Troubleshooting Flow Chart
Method Of Reading Troubleshooting Table
Troubleshooting Chart For Electric System
Troubleshooting Chart For Electronic Vehicle Monitoring System
Troubleshooting Table For Hydraulic And Mechanical System
-DISASSEMBLY AND ASSEMBLY
Starting Motor
Alternator
Fuel Injection Pump
Water Pump
Injector
Cylinder Head
Turbocharger
Compressor
Aftercooler
Radiator
Oil Cooler
Engine
Fuel Tank
Torque Converter Charging Pump
Torque Converter Transmission
Transfer
Torque Converter
Transmission
Transfer
Transmission Control Valve
Front Differential
Rear Differential
Differential
Front Axle
Rear Axle
Drive Shaft
Final Drive
Steering Valve
Steering Demand Valve
Center Hinge Pin
Steering Cylinder
Air Governor
Brake Valve
Brake Chamber
Slack Adjuster
Brake
Spring Cylinder
Parking Brake
Parking Brake Pad
Hydraulic Tank
Hydraulic Filter
Hydraulic Steering Pump
Main Control Valve
Dump Cylinder
Lift Cylinder
Hydraulic Cylinder
Work Equipment
Counterweight
Cab
-MAINTENANCE STANDARD
Transmission And Engine Mount
Torque Converter Charging Pump
Torque Converter
Torque Flow Transmission
Transfer
Differential
Final Drive
Drive Shaft
Axle Mount
Steering Column And Orbit-Roll
Steering Valve
Steering Cylinder Mount
Steering Cylinder
Center Hinge Pin
Diverter Valve
Security Valve
Brake Valve
Brake Chamber
Slack Adjuster
Brake
Parking Brake
Spring Cylinder
Hydraulic Pump
Main Control Valve
Dump Cylinder
Lift Cylinder
Bucket Linkage
Bucket Positioner And Boom Kick-Out
Bucket
-OTHERS
Air Piping
Air Circuit Diagram
Hydraulic Piping
Hydraulic Circuit Diagram
Electronic Vehicle Monitor Diagram
Electrical Wiring Diagram