komatsu wa420 3 wheel loader shop manual vebm470104 1

komatsu wa420 3 wheel loader shop manual vebm470104 2

komatsu wa420 3 wheel loader shop manual vebm470104 3

komatsu wa420 3 wheel loader shop manual vebm470104 4

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Komatsu WA420-3 Wheel Loader Shop Manual VEBM470104

$40.00

Type Of Manual: Shop Manual
Manual ID: VEBM470104
Format: PDF
Size: 28.2MB
Number of Pages: 970

Category: Komatsu Shop Manual PDF

Model List:
- WA420-3 Wheel Loader

1. COVER
2. Contents
3. General
3.1. Up to SN WA420H30296
3.2. Dimensions and weights
3.3. Specifications
3.4. Weight table
3.5. SN WA420H30297 and up
3.6. Dimensions and weights
3.7. Specifications
3.8. Weight table
3.9. List of lubricant and water
3.10. Outlines of service
3.11. General view of controls and gauges
3.12. Torque list
4. Structure and function
4.1. Power train
4.2. Power train system
4.3. Torque converter, transmission piping
4.4. Transmission hydraulic system diagram
4.5. Transmission hydraulic circuit diagram
4.6. Torque converter
4.7. Transmission
4.8. Clutch
4.9. Transmission control valve
4.10. Transmission solenoid valve
4.11. Pilot reducing valve
4.12. Main relief valve
4.13. Torque converter outlet port valve
4.14. Priority valve
4.15. Transmission oil pressure system diagram
4.16. HL selector valve and range selector valve
4.17. Emergency manual spool
4.18. Electronic control modulation valve
4.19. Pilot oil filter
4.20. Accumulator valve
4.21. Axle mount, center hinge pin
4.22. Steering piping
4.23. Steering column, orbit roll
4.24. Hydraulic circuit diagram for steering
4.25. Orbitroll valve
4.26. Steering demand valve
4.27. Overload relief valve
4.28. Steering relief valve
4.29. Operation of demand valve
4.30. Emergency steering
4.31. Brake piping
4.32. Brake circuit diagram
4.33. Brake valve
4.34. Charge valve
4.35. Accumulator for system brake
4.36. Slack adjuster
4.37. Brake circuit diagram
4.38. Brake valve (dual circuit)
4.39. Brake valve (single circuit)
4.40. Brake pressure regulating valve
4.41. Accumulator (for brake)
4.42. Accumulator for PPC valve
4.43. Brake accumulator unit
4.44. Brake
4.45. Parking brake control
4.46. Parking brake
4.47. Parking brake valve
4.48. Hydraulic piping
4.49. Work equipment hydraulic circuit diagram
4.50. Work equipment lever linkage
4.51. Hydraulic tank
4.52. PPC valve
4.53. PPC relief valve
4.54. Accumulator for PPC valve
4.55. Main control valve (up to H30296)
4.56. Relief valve (up to H30296
4.57. Safety valve (with suction)
4.58. Suction valve
4.59. Main control valve (H30297 and up)
4.60. Safety valve with suction (H30297 and up)
4.61. Anticavitation valve (H30297 and up)
4.62. Safety valve (H30297 and up)
4.63. Hydraulic safety system
4.64. Hydraulic safety system location (up to H30431)
4.65. Hydraulic safety valve (up to H30431)
4.66. Work equipment linkage
4.67. Bucket
4.68. Bucket positioner and boom kickout
4.69. Machine monitor system
4.70. Main monitor
4.71. Maintenance monitor
4.72. Transmission autoshift control system
4.73. Transmission controller
4.75. Sensors
4.76. Engine start circuit
4.77. Ether start
4.78. Electric transmission control
4.79. Combination switch
4.80. Kickdown, hold switch
4.81. Transmission electric circuit diagram
4.82. Transmission cutoff switch
4.83. Transmission cutoff function
4.84. Electric parking brake control
4.85. Airconditioner
4.86. Wiring diagrams
5. Testing and adjusting
5.1. Standard value table for engine
5.2. Standard value table for chassis
5.3. Test certificate
5.4. Standard value table for electrical parts
5.5. Tools for testing, adjusting and troubleshooting
5.6. Adjusting valve clearance
5.7. Measuring compression pressure
5.8. Measuring blowby pressure
5.9. Testing and adjusting fuel injection timing
5.10. Mesuring exhaust color
5.11. Measuring intake air pressure (boost pressure)
5.12. Measuring engine oil pressure
5.13. Testing the fan belt tension
5.14. Measuring accelerator pedal
5.15. Basic adjustment of accelerator pedal
5.16. Measuring operating force, travel of speed lever
5.17. Measuring stall speed
5.18. Measuring torque converter, transmission, parking brake oil pressure
5.19. Method of operating emergency manual spool
5.20. Measuring clearance between tyre and wheel
5.21. Measuring operating force of steering wheel
5.22. Measuring steering oil pressure
5.23. Measuring operating force, travel of brake pedal
5.24. Measuring brake performance
5.25. Testing brake oil pressure
5.26. Measuring brake disc wear
5.27. Bleeding air from brake system
5.28. Measuring parking brake performance
5.29. Method of manual release of parking brake
5.30. Testing wear of parking brake disc
5.31. Measuring work equipment control lever
5.32. Measuring PPC valve pressure
5.33. Measuring work equipment
5.34. Testing and adjusting bucket positioner
5.35. Testing and adjusting boom kickout
5.36. Adjusting main monitor (speedometer modul)
5.37. Checking for abnormality in fuel level sensor
5.38. Troubleshooting
5.39. Points to remember when troubleshooting
5.40. Sequence of events in troubleshooting
5.41. Precautions when carrying out maintenance
5.42. Handling connectors
5.43. Checks before troubleshooting
5.44. Method of using troubleshooting charts
5.45. Connector types and mounting locations, connector pin arrangement diagram
5.46. Connection table for connector pin numbers
5.47. Troubleshooting of engine system (S mode)
5.48. Troubleshooting of main monitor system (M mode)
5.49. Troubleshooting of maintenance monitor system (K mode)
5.50. Troubleshooting of electrical system (E mode)
5.51. Troubleshooting of transmission controller system (A mode)
5.52. Troubleshooting of hydraulic and mechanical system (Chassis related) (T mode)
5.53. Troubleshooting of ECSS (Electronically Controlled Suspension System) (D mode)
6. Disassembly and assembly
6.1. Method of using manual
6.2. Precautions when carrying out operation
6.3. Special tool list
6.4. Starting motor
6.5. Alternator
6.6. Engine oil cooler
6.7. Fuel injection pump
6.8. Water pump
6.9. Turbocharger
6.10. Thermostat
6.11. Cylinder head
6.12. Torque converter charging pump
6.13. Torque converter, transmission
6.14. Torque converter
6.15. Tranmission
6.16. Transmission clutch pack
6.17. Parking brake
6.18. Transmission control valve
6.19. Transmission accumulator valve
6.20. Drive shaft
6.21. Front axle
6.22. Rear axle
6.23. Front differential
6.24. Rear differential
6.25. Differential
6.26. Final drive
6.27. Center hinge pin
6.28. Steering, orbit roll
6.29. Steering valve
6.30. Steering, switch pump
6.31. Steering cylinder
6.32. Brake valve
6.33. Right brake valve (tandem)
6.34. Left brake valve (single)
6.35. Slack adjuster
6.36. Brake
6.37. Parking brake disc
6.38. Hydraulic tank
6.39. Work equipment, PPC pump
6.40. PPC valve
6.41. Main control valve
6.42. Bucket cylinder
6.43. Boom cylinder
6.44. Hydraulic cylinder
6.45. Maintenance monitor
6.46. Air conditioner unit
6.47. Air conditioner condenser
6.48. Dry receiver
6.49. Air conditioner compressor
7. Maintenance standard
7.1. Engine mount, transmission mount
7.2. Torque converter
7.3. Transmission
7.4. Transmission control valve
7.5. Drive shaft
7.6. Diffential
7.7. Final drive
7.8. Axle mount
7.9. Steerig column, orbit roll
7.10. Steering valve
7.11. Steering cylinder mount
7.12. Slack adjuster
7.13. Brake valve
7.14. Brake
7.15. Parking brake
7.16. Torque converter, transmission pump
7.17. Steering, switch pump
7.18. Hydraulic, PPC pump
7.19. PPC valve
7.20. Cutoff valve
7.21. Main control valve
7.22. Boom cylinder
7.23. Bucket cylinder
7.24. Center hinge pin
7.25. Work equipment linkage
7.26. Bucket
7.27. Bucket positioner and boom kickout

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