Factory Shop Manual For Komatsu Backhoe 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: 348
Number: WEBM003200 (issued 2001)
Bookmarks: Yes
Searchable: Yes
Wiring Diagrams: Yes
Hydraulic Diagrams: Yes

Model

Komatsu Backhoe Loader
WB70A-1
SN F10392 And Up

Contents

-FOREWORD
Safety
Foreword
How To Read The Shop Manual
Hoisting Instructions
Standard Tightening Torque
Coating Materials
Electric Wire Code
Weight Table
Table Of Oil And Coolant Quantities
-STRUCTURE AND FUNCTION
P.T.O.
Powertrain
Transmission
Axles
Hydrostatic Transmission
Hydrostatic Transmission Pump
Inching Valve
Travel Motor
Steering System
Steering System Pump
Steering Unit
Priority Valve
Frames Knuckle And Joint
Hydraulic Circuit Diagram
3-Spool Control Valve
6-Spool Control Valve
7- Spool Control Valve
Valves
Gear Pump
Outrigger Safety Valves
Brake Pump
Front Equipment Cylinder
Front Work Equipment
Loader Control Lever
Backhoe Cylinder
Backhoe Work Equipment
Backhoe Control Lever
Solenoid Valve
Electric Diagram
-TESTING AND ADJUSTMENTS
Normal Or Standard Technical Data
Special Tools
Measuring Engine Speed
Adjusting Valve Clearance
Measuring Compression Pressure
Testing And Adjusting Fuel Injection Timing
Checking And Tightening The Fan – Belt
Measuring Accelerator Pedal Operating Force And Acceleration Lever
Adjusting Inch Pedal Travel
Adjusting Brake Pedal Travel
Testing Frame Articulation Clearance
Air Bleeding – Releasing Residual Pressure
Checking And Setting Pressure In The Attachments Hydraulic Circuit
Testing And Adjusting Hydrostatic Transmission
Testing And Adjusting Travel Maximum Speed (Universal Joint)
Testing Travel Motor Linkage
Adjusting Transmission Sensor
Testing Priority Valve Operation
Adjusting Transmission Sensor
Testing Priority Valve Operation
Testing And Setting Steering Control System Pressure
Testing Steering Cylinder Leakage
Testing Brake System
Adjusting Parking Brake Lever
Checking Wear In The Brake Disks
Analysis Of Causes Hydraulic Drifts
Adjusting Of Cylinder Draft Of Backframe Locking
-DISASSEMBLY AND ASSEMBLY
Precautions To Be Taken While Working
Special Tools (For Machine)
Special Tools (For Backhoe)
Starter Motor
Alternator
Injection Pump
Nozzle Holder
Cylinder Head
Radiator – Oil Cooler Unit
Muffler
Seat And Engine Hood
Side Cover
Heating Radiator
Cab
Fuel Tank
Hydraulic Oil Tank
Engine – Pump Group
Piston Pump And Steering Pump
Piston Pump
Engine-Pump Coupling Joint
Travel Motor
Steering Pump
Steering Gear Pump
Work Equipment Pump
Brake Pump
Transmission-Reverse, Direction Indicator And Headlight Dipper Beam Control Group
Steering Unit
Priority Valve
Front Equipment Control Valve
Front Axle
Rear Axle
Axles
Transmission
Frame Joint Pin
Front Bucket Lift Arm Cylinders
Front Bucket Dumping Cylinder
Steering Cylinders
Frame Oscillating Lock Cylinder
Machine Cylinders
Frame Oscillating Lock Cylinder
Front Bucket
Tilt Lever And Bucket Link
Front Bucket Lift Arm
Backhoe Control Valve
Backhoe Boom Cylinder
Backhoe Arm Cylinder
Backhoe Bucket Cylinder
Backhoe Swing Cylinders
Outrigger Cylinders
Backhoe Backframe Lock Cylinders
Backhoe Cylinders (Boom, Arm, Bucket, Outrigger, Jig Arm)
Boom Swing Cylinder
Backhoe Equipment
Backhoe Bucket
Arm
Backhoe Boom
Bracket
Backframe
-MAINTENANCE STANDARD
P.T.O.
Transmission
Axles
Hydrostatic Transmission Pump
Travel Motor
Steering Pump (P2)
3-Spool Control Valve
Brake Pump
Outrigger Safety Valves
Steering And Front Work Equipment Cylinders
Backhoe Cylinders
Frame Knuckle And Joint
Backhoe Frame
Front Work Equipment
Backframe And Bracket
Backhoe Work Equipment