Komatsu WA270-3, WA270PT-3 Wheel Loader Shop Manual VEBM340200

Description

• Model List:
  • WA270-3 Wheel Loader
  • WA270PT-3 Wheel Loader

• 1. Shop Manual VEBM340200
• 1.1. Contents
• 1.2. Safety notice
• 1.3. Foreword
• 1.4. How to read the shop manual
• 1.5. Hoisting instructions
• 2. General
• 2.1. WA2703 Dimensions, Operating Data
• 2.2. WA270PT3 Dimensions, Operating Data
• 2.3. Specifications
• 2.4. WA2703 Weight Table
• 2.5. WA270PT3 Weight Table
• 2.6. Lubricants and Operating Equipment
• 2.7. Maintenance Schedule
• 2.8. Outlines of Service
• 2.9. Torque List
• 2.10. General View of Controls and Gauges
• 2.11. Emergency Drive
• 3. Structure and Function
• 3.1. Power Train
• 3.2. Power Train System
• 3.3. Torque Converter and Gearbox Piping
• 3.4. Torque Converter
• 3.4.1. Principle of Operation
• 3.5. Powershift Transmission
• 3.5.1. Reversing Transmission 4WG150
• 3.5.1.1. Front View
• 3.5.1.2. Side View
• 3.5.1.3. Rear View
• 3.5.1.4. Electro Hydraulic Control Valve
• 3.5.1.4.1. Detail X
• 3.5.1.5. Inductive Sender
• 3.5.1.6. Proximity Switch
• 3.5.1.7. Pressure Check Points
• 3.5.1.8. Transmission Hydraulic Diagram
• 3.5.1.9. Solenoid Expansion Valve and Overlap Valve
• 3.5.1.10. Thermostat Valve
• 3.5.2. Reversing Transmission 4WG160
• 3.5.2.1. Front View
• 3.5.2.2. Side View
• 3.5.2.3. Rear View
• 3.5.2.4. ElectroHydraulic Shift Control with Proportional Valves
• 3.5.2.5. Measuring Points and Conenctions
• 3.5.2.6. Oil Circuit Diagram Forward 1. Speed
• 3.5.2.7. Inductive Sender
• 3.5.2.8. Proximity Switch
• 3.5.2.9. Thermostat Valve
• 3.6. Drive Shaft
• 3.7. Front and Rear Axles
• 3.8. Differential Unit CK
• 3.9. Differential
• 3.9.1. Limited Slip Differential
• 3.10. Wheel Hub
• 3.11. Axle Mounting
• 3.12. Steering Articulation Joint
• 3.12.1. Outline
• 3.12.2. Assembly
• 3.13. Steering System
• 3.13.1. Steering Column, Orbit Roll
• 3.13.2. Steering Hydraukic Diagram
• 3.13.3. Hydraulic Steering System
• 3.13.3.1. In Neutral
• 3.13.3.2. In Use
• 3.13.4. Steering Servostat Control Valve
• 3.13.4.1. Neutral Position
• 3.13.4.2. Steering Position
• 3.13.5. Steering and Working Hydraulic Pump
• 3.13.6. Steering Orbit Roll
• 3.13.7. Steering Valve Block
• 3.13.8. Steering Damper
• 3.14. Steering Cylinder
• 3.14.1. Steering Cylinder
• 3.15. Emergency Steering Pump
• 3.16. Brake System
• 3.16.1. Brake Valve
• 3.16.1.1. Operating
• 3.16.2. Brake System Circuit
• 3.16.3. Gear Pump
• 3.16.4. Pressure Filter
• 3.16.5. Pressure Regulating Valve
• 3.16.6. Operation
• 3.16.7. Pressure Switch
• 3.16.8. Brake Accumulator
• 3.16.8.1. Hydraulic Circuit
• 3.17. Work Equipment Hydraulic System
• 3.17.1. Pilot Servo System
• 3.17.2. Oil Cooler
• 3.17.3. Combined Cooler
• 3.17.4. Working Hydraulic Pump
• 3.17.5. WA2703 Hydraulic System Diagram
• 3.17.6. WA270PT3 Hydraulic System Diagram
• 3.17.7. WA2703 Cut Off Valve
• 3.17.8. WA270PT3 Pilot Solenoid Valve
• 3.17.9. Main Control Valve
• 3.17.9.1. Shock and Anticavitation Valve
• 3.17.9.2. Anticavitation Valve
• 3.17.10. Pressure Control Valve
• 3.17.11. Joystick, Servo Control Valve
• 3.17.12. Lift Cylinder
• 3.17.13. Tilt Cylinder
• 3.17.14. ALSControl Unit
• 3.17.15. ALS Hydraulic Diagram
• 3.17.16. GasSide Test
• 3.17.17. Topping Up Gas Pressure
• 3.17.18. Hydraulic Accumulator
• 3.18. Lifting Frame
• 3.18.1. WA2703
• 3.18.2. WA270PT3
• 3.19. Bucket Positioner and Boom Kick Out
• 3.19.1. WA2703
• 3.19.2. WA270PT3
• 3.19.2.1. Bucket or Fork Positioner
• 3.19.2.2. Boom Kick Out
• 3.20. Machine Monitor System
• 3.20.1. Main Monitor
• 3.20.1.1. Display Function
• 3.20.1.2. Switch Function
• 3.20.2. Maintenance Monitor
• 3.20.2.1. Display Function
• 3.21. Electrical System
• 3.21.1. PreHeater Plug
• 3.21.2. Fuses
• 3.21.2.1. Slow Blow Fuses
• 3.21.3. Relays
• 3.21.4. Heating and Ventilation System
• 3.21.5. Wiring Diagrams
• 3.22. Air Conditioner
• 3.22.1. In General
• 3.22.2. Characteristics
• 3.22.3. Physical Datas
• 3.22.4. Function
• 3.22.4.1. Coolant Circuit
• 3.22.4.2. Handling Coolants
• 3.22.4.3. Regular Maintenance
• 3.22.4.4. Filling
• 3.22.4.5. Evacuation
• 3.22.4.6. Siphoning Coolant
• 3.22.4.7. Filling Quantity
• 3.22.4.8. Checking Coolant Level
• 3.22.4.9. Compressor Oil Change
• 3.22.4.10. Exchange of Magnetic Clutch
• 3.22.4.11. Exchange of Compressor
• 3.22.4.12. Service Operations
• 3.22.5. Electrical System
• 3.22.5.1. Pin assignment
• 3.22.5.2. Wiring Diagram
• 3.22.6. Technical Data
• 3.22.7. Fault Diagnosis
• 3.22.7.1. Preconditions
• 3.22.7.3. Operating Mode Switch
• 3.22.7.4. Circulating Air Mode
• 3.22.7.5. Temperature Setting
• 3.22.7.6. Air Conditioning Mode
• 3.22.8. Troubleshooting
• 4. Testing and Adjusting
• 4.1. Contents
• 4.1.1. Standard Value Table
• 4.1.2. Test Certificate
• 4.1.2.1. WA2703, current
• 4.1.2.2. WA270PT3, current
• 4.1.2.3. WA2703, new
• 4.1.2.4. WA270PT3, new
• 4.1.3. Engine RPM Load
• 4.1.4. Hydraulic RPM Load
• 4.1.5. Torque Converter And Transmission Pressure
• 4.1.5.1. Current, with 4WG150
• 4.1.5.2. New, with 4WG160
• 4.1.6. Inductive Sender
• 4.1.7. Proximity Switch
• 4.1.8. Operating Force and Travel of Speed Lever
• 4.1.9. Operating Force of Steering Wheel
• 4.1.10. Operating Time for Steering Wheel
• 4.1.11. Steering Pressure
• 4.1.12. Switch Pump Pressure CutOff
• 4.1.13. Working Hydraulic Pressure
• 4.1.14. Servo Pilot Pressure
• 4.1.15. Hydraulic Drift of Work Equipment
• 4.1.16. Work Equipment
• 4.1.17. Brake Oil Pressure
• 4.1.18. Brake Wear
• 4.1.19. Bleeding of Brake
• 4.1.20. Main Brake Performance
• 4.1.21. Parking Brake Performance
• 4.1.22. Main Monitor
• 4.1.22.1. Speedometer Modul
• 4.1.23. Boom KickOut
• 4.1.24. Accelerator Pedal
• 4.2. Troubleshooting
• 4.2.1. Datas
• 4.2.2. Connecting of AEBStarter and ZFDisplay
• 4.2.3. Operating Instructions AEBStarter
• 4.2.3.1. Introduction
• 4.2.3.2. List of abbreviations
• 4.2.3.3. Procedures to start AEB
• 4.2.3.4. Display
• 4.2.4. Description of fault codes for ERGOControl EST37
• 4.2.4.1. Introduction
• 4.2.4.2. Display during operation
• 4.2.4.3. Display during AEBMode
• 4.2.4.4. Definition of operating modes
• 4.2.4.5. Table of fault codes
• 4.2.4.6. Measuring of resistance at actuator/sensors and cable
• 5. Disassembly and Assembly
• 5.1. Contents
• 5.1.1. Method Of Using Manual
• 5.1.2. Precautions
• 5.1.3. Special Tool List
• 5.1.4. Removal and Install
• 5.1.4.1. Hydraulic Filter
• 5.1.4.2. Steering Cylinder
• 5.1.4.3. Bucket Cylinder
• 5.1.4.4. Boom Cylinder
• 5.1.4.6. Main Monitor
• 5.1.4.7. Maintenance Monitor
• 5.1.4.8. PPCValve
• 5.1.4.9. Main Control Valve
• 5.1.4.10. Steering Valve
• 5.1.4.11. Priority Valve
• 5.1.4.12. Working and Steering Pump
• 5.1.4.13. Drive Shaft
• 5.1.4.14. Front Axle
• 5.1.4.15. Rear Axle
• 5.1.4.16. Center Hinge Pin
• 5.1.4.18. Air Conditioner
• 5.1.4.18.1. Condenser/Dry Receiver
• 5.1.4.18.2. Compressor
• 5.1.5. Disassembly and Assembly
• 5.1.5.1. Axle AP408
• 5.1.5.1.1. Overview
• 5.1.5.1.2. Gear ToothContact
• 5.1.5.1.3. Braking System
• 5.1.5.1.4. Special Tools
• 5.1.5.1.5. Planetary Rigid Axle
• 5.1.5.2. Reversing Transmission 4WG150
• 5.1.5.2.1. Special Tools
• 5.1.5.2.2. ElectroHydraulic Shifting Mechanism
• 5.1.5.2.3. Gear Box
• 5.1.5.3. Reversing Transmission 4WG160
• 5.1.5.3.1. General View
• 5.1.5.3.2. Special Tools
• 5.1.5.3.3. Hydraulic Control Unit
• 5.1.5.3.4. Powershift Transmission
• 6. trouble1.pdf
• 6.1. Connecting of AEBStarter and ZFDisplay
• 6.2. Operating Instructions AEB Starter
• 6.3. KOMATSUP/N 34Y00H0P01
• 6.3.1. Introduction
• 6.3.2. List of abbreviations
• 6.3.2.1. Procedure to start AEB
• 6.3.2.1.2. Display
• 6.4. Introduction
• 6.4.1. Abbreviations
• 6.4.2. ZF Display (42100H0R05)
• 6.4.3. Display during operation
• 6.4.4. Display during AEBMode
• 6.5. Definition of operating modes