Komatsu WA115-3 Wheel Loader Shop Manual VEBM120100

Description

• Model List:
  • WA115-3 Wheel Loader

• 1. WA1153
• 2. CONTENTS
• 3. SAFETY
• 3.1. Safety notice
• 3.1.1. Preparations for work
• 3.1.2. Precautions during work
• 3.2. Foreword
• 3.3. How to read the shop manual
• 3.3.1. Volumes
• 3.3.2. Distribution and updating
• 3.3.3. Filing method
• 3.3.4. Symbols
• 3.4. Hoisting instructions
• 4. GENERAL
• 4.1. Specifications
• 4.2. Dimensions, weights and operating data
• 4.3. Weight table
• 4.4. Lubricants and operating mediums
• 4.5. Basic procedures of maintenance
• 4.5.2. Fuel
• 4.5.3. Coolant
• 4.5.4. Grease
• 4.5.5. Storing oil and fuel
• 4.5.6. Filters
• 4.5.7. Biodegradable hydraulic oils and lubricants
• 4.5.8. Outline of electric system
• 4.6. Torque list screws and nuts
• 5. STRUCTURE AND FUNCTION
• 5.1. Powertrain 20 km/h
• 5.2. Powertrain 35 km/h
• 5.3. Closed circuit
• 5.4. Hydraulic drive system 20 km/h
• 5.5. Hydraulic drive system 35 km/h
• 5.6. Variable displacement pump
• 5.6.1. Regulating valve
• 5.6.2. Charge pressure limiting valve
• 5.6.3. Control cylinder
• 5.6.4. Way valve with direction control solenoids
• 5.6.5. Pressure cutoff valve
• 5.6.6. Safety/charge valve
• 5.6.7. Towing
• 5.7. Variable displacement motor
• 5.8. Drive shaft
• 5.9. Axle mounting front and rear axle
• 5.10. Front axle
• 5.11. Rear axle with distributor box 20 km/h
• 5.12. Rear axle with distributor box 35 km/h
• 5.13. Distributor box, single stage 20 km/h
• 5.14. Distributor box, double stage 35 km/h
• 5.15. Limited slip differential (locking value 45), front and rear axle
• 5.16. Wheel hub, front and rear axle
• 5.17. Service and parking brake, rear axle
• 5.18. Sevice brake scheme 20 km/h
• 5.19. Sevice brake scheme 35 km/h
• 5.20. Parking brake scheme 20 km/h
• 5.21. Parking brake scheme 35 km/h
• 5.22. Inchbrake pedal 20 km/h
• 5.23. Inchbrake pedal 35 km/h
• 5.24. Steering scheme
• 5.24.1. Priority valve
• 5.24.2. Orbitrollvalve
• 5.24.3. Steering relief valve
• 5.25. PPCValve
• 5.25.1. Operation of PPCvalve
• 5.25.2. Servo pressure regulating valve
• 5.25.3. Control circuit for tiltin/tiltout (cross section)
• 5.25.4. Pressure regulating valve
• 5.25.5. Shockanticavitation valve
• 5.25.6. Anticavitation valve
• 5.26. Lift cylinder
• 5.27. Dump cylinder
• 5.28. Steering cylinder
• 5.29. Lifting with quickcoupler
• 5.30. Bucket positioner
• 5.30.1. Function
• 5.30.2. Operation of proximity switch
• 5.30.3. Adjusting the bucket positioner
• 5.31. Monitor display
• 5.32. Sensors
• 5.32.1. Engine oil pressure sensor
• 5.32.2. Fuel level sensor
• 5.32.3. Engine coolant temperature sensor
• 5.32.4. Brake oil reservoir sensor
• 5.32.5. Ribbon heater temperature sender unit
• 5.33. Ribbon heater
• 5.34. Engine stop/start/preheating circuit
• 5.35. Drivers cab
• 5.35.1. Fuses (1)
• 5.35.2. Relais (2)
• 5.36. Wiring diagrams
• 5.36.1. Wiring diagram Fig. 1
• 5.36.2. Wiring diagram Fig. 2
• 5.36.3. Wiring diagram Fig. 3
• 5.36.4. Wiring diagram Fig. 4
• 5.36.5. Wiring diagram Fig. 5
• 5.37. Air conditioner (option)
• 5.37.1. Introduction
• 5.37.2. Function
• 5.37.3. The coolant circuit
• 5.37.4. The condenser
• 5.37.5. The vaporizer
• 5.37.6. The filter dryer
• 5.37.7. Installation of air conditioner
• 5.37.8. Safety when handling coolants
• 5.37.9. Operating the air conditioner
• 5.37.10. Maintenance of the air conditioner
• 5.37.11. Regular maintenance
• 5.37.12. Instructions for filling
• 5.37.13. Exchange of magnetic clutch
• 5.37.14. Exchange of compressor
• 5.37.15. Troubleshooting
• 6. TESTING AND ADJUSTING
• 6.1. Standard value table for engine
• 6.2. Standard value table for chassis
• 6.3. Standard value table for electrical parts
• 6.4. Test certificate
• 6.5. Valve clearance, testing and adjusting
• 6.6. Engine compression test
• 6.7. Injection nozzle pressure
• 6.8. Fuel injection timing
• 6.9. Fan belt
• 6.10. Engine RPM
• 6.11. RPMdependant drive takeup
• 6.12. Engine stall torque RPM
• 6.12.1. Engine stall torque RPM, test with the hydrostatic drive
• 6.12.2. Engine stall torque RPM, test with the hydrostatic drive and working hydraulics
• 6.13. Feed pump and servo oil pressure
• 6.14. Hydraulic pressure cutoff
• 6.15. Working hydraulic pressure
• 6.16. Steering oil pressure
• 6.17. Operating time for steering wheel
• 6.18. Operating force of steering wheel
• 6.19. Brake
• 6.19.1. Brake disc, wear test
• 6.19.2. Brake disc clearance
• 6.19.3. Bleeding the brake system
• 6.20. Brake pedal 20 km/h basic adjustment
• 6.21. Brake pedal 35 km/h basic adjustment
• 6.22. Brake efficiency
• 6.22.1. Measuring the stopping distance
• 6.23. Parking brake efficiency
• 6.24. Travel speed
• 7. APPENDIX
• 7.1. Wiring diagram Fig. 1
• 7.2. Wiring diagram Fig. 2
• 7.3. Wiring diagram Fig. 3
• 7.4. Wiring diagram Fig. 4
• 7.5. Wiring diagram Fig. 5