Komatsu WA380-3 Wheel Loader Shop Manual VEBM460104

Description

• Model List:
  • WA380-3 Wheel Loader

• 1. Contents
• 1.1. General
• 1.1.1. Up to SN WA380H20500
• 1.1.2. Dimensions and weights
• 1.1.3. Dimensions and weights highlift
• 1.1.4. Specifications
• 1.1.5. Weight table
• 1.1.6. List of lubricant and water
• 1.1.7. SN WA380H20501 and up
• 1.1.8. Dimensions and weights
• 1.1.9. Specifications
• 1.1.10. Weight table
• 1.1.11. List of lubricant and water
• 1.1.12. Outlines of service
• 1.1.13. General view of controls and gauges
• 1.1.14. Torque list
• 1.2. Structure and function
• 1.2.1. Power train
• 1.2.2. Power train system
• 1.2.3. Torque converter, transmission piping
• 1.2.4. Transmission hydraulic circuit diagram
• 1.2.5. Torque converter
• 1.2.6. Torque converter oil filter
• 1.2.7. Transmission
• 1.2.8. Transmission control valve
• 1.2.9. Upper valve
• 1.2.10. Transmission solenoid valve
• 1.2.11. Pilot reducing valve
• 1.2.12. Main relief valve
• 1.2.13. Torque converter outlet port valve
• 1.2.14. Priority valve
• 1.2.15. Directional selector valve
• 1.2.16. HL selector valve and range selector valve
• 1.2.17. Emergency manuel spool
• 1.2.18. Electronic control modulation valve (ECMV)
• 1.2.19. Pilot oil filter
• 1.2.20. Accumulator valve
• 1.2.21. Flow control valve
• 1.2.22. Axle mount, center hinge pin
• 1.2.23. Steering piping
• 1.2.24. Steering control, orbit roll
• 1.2.25. Orbit roll valve
• 1.2.26. Steering valve
• 1.2.27. Overload relief valve
• 1.2.28. Steering relief valve
• 1.2.29. Operation of demand valve
• 1.2.30. Emergency steering
• 1.2.31. Brake piping
• 1.2.32. Park brake and foot brake circuits
• 1.2.33. Brake valve
• 1.2.34. Accumulator charge valve
• 1.2.35. Accumulator for brake system
• 1.2.36. Brake circuit diagram
• 1.2.37. Brake
• 1.2.38. Parking brake control
• 1.2.39. Parking brake
• 1.2.40. Parking brake valve
• 1.2.41. Hydraulic piping
• 1.2.42. Work equipment hydraulic system diagram
• 1.2.43. Work equipment lever linkage
• 1.2.44. Hydraulic tank
• 1.2.45. Oil filter bypass valve
• 1.2.46. PPC valve
• 1.2.47. Operation of PPC valve
• 1.2.48. PPC relief valve
• 1.2.49. Accumulator (for PPC valve)
• 1.2.50. Main control valve (up to H20383)
• 1.2.51. Relief valve (up to H20383)
• 1.2.52. Safety valve with suction (up to H20383)
• 1.2.53. Suction valve (up to H20383)
• 1.2.54. Main control valve (from H20384 up to H20836)
• 1.2.55. Safety valve with suction (H20384 and up)
• 1.2.56. Antcavitation valve (H20384 and up)
• 1.2.57. Safety valve (H20384 and up)
• 1.2.58. Main control valve (H20837 and up)
• 1.2.59. Operation of cutoff valve (up to H20383)
• 1.2.60. Work equipment valve operation
• 1.2.61. Hydraulic safety system (up to H20836)
• 1.2.62. Hydraulic safety system location (up to H20836)
• 1.2.63. Hydraulic safety valve (up to H20836)
• 1.2.64. Work equipment linkage
• 1.2.65. Bucket
• 1.2.66. Bucket positioner and boom kickout
• 1.2.67. Wiring diagrams
• 1.2.68. Machine monitor system
• 1.2.69. Transmission auotshift control system
• 1.2.70. Transmission controller
• 1.2.71. ECSS (ALS electronic)
• 1.2.72. Sensors
• 1.2.73. Engine starting circuit
• 1.2.74. Engine stop circuit
• 1.2.75. Preheating circuit
• 1.2.76. Electric transmission
• 1.2.77. Combination switch
• 1.2.78. Kickdown, hold switch
• 1.2.79. Kickdown electric circuit diagram
• 1.2.80. Transmission cutoff function
• 1.2.81. Parking brake transmission neutralizer
• 1.2.82. Air conditioner
• 1.3. Testing and adjusting
• 1.3.1. Standard value table for engine
• 1.3.2. Standard value table for chassis
• 1.3.3. Tesz certificate
• 1.3.4. Standard value table for electrical system
• 1.3.5. Tools for testing, adjusting and troubleshooting
• 1.3.6. Adjusting valve clearance
• 1.3.7. Measuring compression pressure
• 1.3.8. Measuring blowby pressure
• 1.3.9. Testing and adjusting fuel injection timing
• 1.3.10. Measuring intake air pressure
• 1.3.11. Measuring engine oil pressure
• 1.3.12. Measuring engine speed
• 1.3.13. Measuring stall speed
• 1.3.14. Testing the fan belt tension
• 1.3.15. Measuring turbocharger clearance
• 1.3.16. Turbocharger wastegate actuator visual inspection
• 1.3.17. Turbocharger wastegate actuator functional checking
• 1.3.18. Adjusting valve clearance
• 1.3.19. Measuring compression pressure
• 1.3.20. Measuring blowby pressure
• 1.3.21. Testing and adjusting fuel injection timing
• 1.3.22. Measuring exhaust color
• 1.3.23. Measuring inkake air pressure (boost pressure)
• 1.3.24. Measuring exhaust gas pressure
• 1.3.25. Measuring engine oil pressure
• 1.3.26. Measuring engine speed
• 1.3.27. Testing and adjusting fan belt tension
• 1.3.28. Method for adjusting engine stop cable
• 1.3.29. Measuring accelerator pedal
• 1.3.30. Basic adjustment of accelerator pedal
• 1.3.31. Measuring operating force, travel of speed lever
• 1.3.32. Measuring stall speed
• 1.3.33. Measuring torque converter, transmission, parking brake oil pressure
• 1.3.34. Method of operating emergency manual spool
• 1.3.35. Measuring clearance between tire and wheel
• 1.3.36. Measuring steering oil pressure
• 1.3.37. Measuring operating force, travel of brake pedal
• 1.3.38. Measuring brake performance
• 1.3.39. Testing brake oil pressure
• 1.3.40. Testing for brake disk wear
• 1.3.41. Bleeding air from brake system
• 1.3.42. Measuring parking brake performance
• 1.3.43. Manual release method for parking brake
• 1.3.44. Testing wear of parking brake disk
• 1.3.45. Measuring work equipment control lever
• 1.3.46. Measuring work equipment hydraulic pressure
• 1.3.47. Measuring PPCvalve pressure
• 1.3.48. Measuring work equipment
• 1.3.49. Testing and adjusting bucket positioner
• 1.3.50. Testing and adjusting boom kickout
• 1.3.51. Adjusting main monitor
• 1.3.52. Gas side test and topping up gas pressure
• 1.3.53. Hydraulic accumulator
• 1.3.54. Troubleshooting
• 1.4. Disassembly and assembly
• 1.4.1. Precautions when carrying out operations
• 1.4.2. Special tool list
• 1.4.3. Starting motor
• 1.4.4. Alternator
• 1.4.5. Engine oil cooler
• 1.4.6. Fuel injection pump
• 1.4.7. Torque converter charging pump
• 1.4.8. Torque converter, transmission
• 1.4.9. Torque converter
• 1.4.10. Transmission
• 1.4.11. Transmission clutch pack
• 1.4.12. Transmission control valve
• 1.4.13. Transmission accumulator valve
• 1.4.14. Center hinge pin
• 1.4.15. Steering gear
• 1.4.16. Steering valve
• 1.4.17. Steering cylinder
• 1.4.18. Brake valve
• 1.4.19. Right brake valve (tandem)
• 1.4.20. Left brake valve (single)
• 1.4.21. Parking brake disc
• 1.4.22. Hydraulic tank
• 1.4.23. Hydraulic filter
• 1.4.24. Hydraulic, steering, switch, PPC pump
• 1.4.25. Main control valve
• 1.4.26. PPC valve
• 1.4.27. Bucket cylinder
• 1.4.28. Boom cylinder
• 1.4.29. Hydraulic cylinder
• 1.4.30. Work equipment
• 1.4.31. Counterweight
• 1.4.32. Fuel tank
• 1.4.33. Cab, floor frame
• 1.4.35. Main monitor
• 1.4.36. Maintenance monitor
• 1.4.37. Air conditioner unit
• 1.4.38. Air conditioner condenser
• 1.4.39. Dry receiver
• 1.4.40. Air conditioner condenser compressor
• 1.5. Maintenance standard
• 1.5.1. Engine mount, transmission mount
• 1.5.2. Torque converter charging pump
• 1.5.3. Torque converter
• 1.5.4. Transmission
• 1.5.5. Transmission control valve
• 1.5.6. Flow control valve
• 1.5.7. Accumulator valve
• 1.5.8. Drive shaft
• 1.5.9. Differential
• 1.5.10. Final drive
• 1.5.11. Axle mount
• 1.5.12. Center hinge pin
• 1.5.13. Steering column
• 1.5.14. Steering valve
• 1.5.15. Steering cylinder mount
• 1.5.16. Brake
• 1.5.17. Brake valve
• 1.5.18. Parking brake
• 1.5.19. Hydraulic pump
• 1.5.20. Main control valve
• 1.5.21. PPC valve
• 1.5.22. Hydraulic cylinder
• 1.5.23. Work equipment linkage
• 1.5.24. Bucket
• 1.5.25. Bucket positioner and boom kickout
• 2. Diagrams