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: 509
Number: WEBM001102 (january 2001)
Bookmarks: Yes
Searchable: Yes
Wiring Diagrams: Yes
Hydraulic Diagrams: Yes

Model

Komatsu Backhoe Loader
WB140-2
SN 140F10001 And Up; 30026 And Up
WB150-2
SN 150F10001

Contents

-FOREWARD
Foreword
How To Read The Manual
Hoisting Instructions
Standard Tightening Torque
Coating Materials
Electric Wire Code
Weight Table
Table Of Oil And Coolant Quantities
-STRUCTURE AND FUNCTION
Powertrain
Transmission
Drive Shafts
Control Valve Block
Front Axle
Rear Axle
Hydraulic Pump
Hydraulic Steering System
Hydraulic Circuit (WB140-2)
Hydraulic Circuit (WB150-2)
Shovel Control Valve
Backhoe Control Valve
CLSS
Safety Valve
Solenoid Valve
Brake Pump
Shovel Cylinders
Backhoe Cylinders
Air-Conditioning Unit
How The Air-Conditioning Unit Functions
Electrical Diagram
-TESTING AND ADJUSTING
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
Checking And Tightening The Compressor Fan – Belt
Measuring Accelerator Pedal Operating Travel And Accelerator Lever
Adjusting Brake Pedal Travel, Brake Alignment, Microswitches
Air Bleeding – Releasing Residual Pressure
Checking And Setting Pressure In The Attachments Hydraulic Circuit
Testing And Adjusting Of Loading Sensing Signal (LS Valve)
Checking Unloading Valve Functionality
Testing Pump Delivery
Testing Priority Valve Operation
Testing And Setting Steering Control System Pressure
Testing Brake System
Control Of The Engine Speed Under Load
Testing Pressures In The Powertrain Group
Testing The Correct Functioning Of The Power Train Clutches
Adjusting The Sensor For Return To Dig Device
Analysis Of Causes Hydraulic Drift
Testing The Air-Conditioning Unit
-REMOVAL AND INSTALLATION
Precautions To Be Taken While Working
Special Tools
Starting Motor
Alternator
Air-Conditioning Unit Compressor
Injection Pump
Injection Nozzles
Thermostat
Cooling Liquid Pump
Turbocompressor
Cylinder Head
Accumulator Disconnecting Switch
Front Counterweight
Radiator-Oil Cooler Unit
Condenser
Hydraulic Oil Cooler
Transmission Oil Cooler
Muffler
Exhaust Pipe
Engine Hood
Cab
Heat And Air Conditioning Group
Fuel Tank
Hydraulic Oil Tank
Engine-Gearbox-Pump Group
Piston Pump
Transmission
Convertor
Removal Of The Transmission-Reverse, Direction Indicator Dipper Beam Control Group
Steering Unit
Working Brake Pump Group
Front Working Equipment Control Valve
Front Axle
Rear Axle
Front Bucket Boom-Raising Cylinders
Front Bucket Tilt Cylinders
Front Bucket
Front Working Equipment
Backhoe Control Valve
Backhoe Boom Cylinder
Backhoe Arm Cylinder
Telescopic Arm Cylinder
Backhoe Bucket Cylinder
Outrigger Cylinders
Backhoe Swing Cylinders
Cylinders (Front Bucket Raise And Tilt, Outriggers, Boom, Arm, Bucket And Telescopic Arm)
Cylinders (Front Bucket Raise And Tilt) Only For WB140-2 From Serial Number 30026 And Up
Cylinders (Outrigger) Only For WB140-2 From Serial Number 30026 And Up
Boom Swing Cylinder
Boom Safety Cylinder
Backhoe Working Equipment
Backhoe Bucket
Arm
Telescopic Arm
2Nd Arm
2Nd Arm Guides
Backhoe Boom
Backhoe Swing Bracket
Backhoe Supports
-MAINTENANCE STANDARD
Transmission
Front Axle
Rear Axle
Hydraulic Pump
2-Spool Control Valve
3-Spool Control Valve
6-Spool Control Valve
7-Spool Control Valve
8-Spool Control Valve
Brake Pump
Shovel Cylinder
Backhoe Cylinders
Front Working Equipment
Swing Bracket
Backhoe Working Equipment