Komatsu WA320-5 Wheel Loader Shop Manual SEBM034612

Description

• Model List:
  • WA320-5 Wheel Loader

• 1. COVER
• 2. CONTENTS
• 3. LIST OF REVISED PAGES
• 4. GENERAL
• 4.1. GENERAL ASSEMBLY DRAWINGS
• 4.2. SPECIFICATIONS
• 4.3. WEIGHT TABLE
• 4.4. LIST OF LUBRICANT AND COOLANT
• 5. STRUCTURE,FUNCTION AND MAINTENANCE STANDARD
• 5.1. ENGINE MOUNT AND TRANSFER MOUNT
• 5.2. DAMPER
• 5.3. COOLING SYSTEM
• 5.4. POWER TRAIN
• 5.5. POWER TRAIN SYSTEM DIAGRAM
• 5.6. DRIVE SHAFT (PROPELLER SHAFT)
• 5.7. HST HYDRAULIC PIPING DIAGRAM
• 5.8. HST PUMP
• 5.9. HIGHPRESSURE RELIEF VALVE
• 5.10. LOWPRESSURE RELIEF VALVE
• 5.11. HST CHARGE PUMP
• 5.12. SPEEDRELATED VALVE (DA VALVE)
• 5.13. HIGHPRESSURE CUTOFF VALVE
• 5.14. HST MOTOR
• 5.15. EP SERVO VALVE
• 5.16. HA SERVO VALVE
• 5.17. FORWARDREVERSE SHUTTLE VALVE
• 5.18. TRANSFER
• 5.19. CLUTCH SOLENOID VALVE
• 5.20. AXLE
• 5.21. DIFFERENTIAL
• 5.22. LIMITEDSLIP DIFFERENTIAL
• 5.23. FINAL DRIVE
• 5.24. AXLE MOUNTING AND CENTER HINGE PIN
• 5.25. STEERING PIPING
• 5.26. STEERING COLUMN
• 5.27. PRIORITY VALVE
• 5.28. ORBITROLL VALVE
• 5.29. CUSHION VALVE
• 5.30. STEERING CYLINDER
• 5.31. EMERGENCY STEERING PIPING
• 5.32. EMERGENCY STEERING VALVE
• 5.33. BRAKE PIPING
• 5.34. BRAKE VALVE
• 5.35. INCHING VALVE
• 5.36. CHARGE VALVE
• 5.37. ACCUMULATOR (FOR BRAKE)
• 5.38. SLACK ADJUSTER
• 5.39. BRAKE
• 5.40. PARKING BRAKE CONTROL
• 5.41. PARKING BRAKE
• 5.42. HYDRAULIC PIPING
• 5.43. WORK EQUIPMENT LEVEL LINKAGE
• 5.44. HYDRAULIC TANK
• 5.45. GEAR PUMP UNIT
• 5.46. ACCUMULATOR (FOR PPC CIRCUIT)
• 5.47. LOCK VALVE
• 5.48. VALVE
• 5.49. ACCUMULATOR (FOR E.C.S.S.)
• 5.50. HYDRAULIC PIPING OF COOLING SYSTEM
• 5.51. COOLING FAN MOTOR
• 5.52. WORK EQUIPMENT CONTROL VALVE
• 5.53. WORK EQUIPMENT PPC VALVE
• 5.54. ATTACHMENT PPC VALVE
• 5.55. WORK EQUIPMENT LINKAGE
• 5.56. BUCKET
• 5.57. BUCKET POSITIONER AND BOOM KICKOUT
• 5.58. WORK EQUIPMENT CYLINDER
• 5.59. AIR CONDITIONER
• 5.60. MACHINE MONITORING SYSTEM
• 5.61. MACHINE MONITOR
• 5.62. LIST OF ITEMS DISPLAYED ON MONITOR
• 5.63. ELECTRICAL SYSTEM (HST CONTROLLER SYSTEM)
• 5.64. HST CONTROLLER
• 5.65. KOMTRAX SYSTEM
• 5.66. ENGINE START CIRCUIT
• 5.67. ENGINE STOP CIRCUIT
• 5.68. PREHEATING CIRCUIT (AUTOMATIC PREHEATING SYSTEM)
• 5.69. PARKING BRAKE CIRCUIT
• 5.70. ELECTRONICALLY CONTROLLED SUSPENSION SYSTEM
• 5.71. SENSORS
• 6. TESTING AND ADJUSTING
• 6.1. STANDARD VALUE TABLE FOR ENGINE
• 6.2. STANDARD VALUE TABLE FOR CHASSIS
• 6.3. TESTING AND ADJUSTING
• 6.3.1. TOOLS FOR TESTING, ADJUSTING,AND TROUBLESHOOTING
• 6.3.2. MEASURING ENGINE SPEED
• 6.3.3. MEASURING EXHAUST GAS COLOR
• 6.3.4. ADJUSTING VALVE CLEARANCE
• 6.3.5. MEASURING COMPRESSION PRESSURE
• 6.3.6. MEASURING BLOWBY PRESSURE
• 6.3.7. TESTING AND ADJUSTING FUEL INJECTION TIMING
• 6.3.8. MEASURING ENGINE OIL PRESSURE
• 6.3.9. MEASURING, TESTING OPERATION FORCE OF ACCELERATOR PEDAL
• 6.3.10. ADJUSTING ENGINE STOP SOLENOID
• 6.3.11. ADJUSTING ENGINE SPEED SENSOR
• 6.3.12. TESTING AND ADJUSTING AIR CONDITIONER COMPRESSOR BELT TENSION
• 6.3.13. MEASURING DIRECTIONAL LEVER
• 6.3.14. TESTING AND ADJUSTING HST OIL PRESSURE
• 6.3.15. MEASURING CLUTCH CONTROL PRESSURE
• 6.3.16. TESTING AND ADJUSTING STEERING WHEEL
• 6.3.17. TESTING AND ADJUSTING STEERING OIL PRESSURE
• 6.3.18. BLEEDING AIR FROM STEERING CIRCUIT
• 6.3.19. TESTING HYDRAULIC FAN
• 6.3.20. MEASURING BRAKE PEDAL
• 6.3.21. TESTING AND ADJUSTING BRAKE PEDAL LINKAGE
• 6.3.22. MEASURING BRAKE PERFORMANCE
• 6.3.23. TESTING AND ADJUSTING ACCUMULATOR CHARGE PRESSURE
• 6.3.24. MEASURING BRAKE OIL PRESSURE
• 6.3.25. MEASURING WEAR OF BRAKE DISC
• 6.3.26. BLEEDING AIR FROM BRAKE CIRCUIT
• 6.3.27. MEASURING PARKING BRAKE PERFORMANCE
• 6.3.28. TESTING AND ADJUSTING PARKING BRAKE LINKAGE
• 6.3.29. MEASURING AND ADJUSTING WORK EQUIPMENT CONTROL LEVER
• 6.3.30. TESTING AND ADJUSTING WORK EQUIPMENT HYDRAULIC PRESSURE
• 6.3.31. TESTING AND ADJUSTING WORK EQUIPMENT PPC OIL PRESSURE
• 6.3.32. BLEEDING AIR
• 6.3.33. RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT
• 6.3.34. TESTING AND ADJUSTING BUCKET POSITIONER
• 6.3.35. TESTING AND ADJUSTING OF BOOM KICKOUT
• 6.3.36. CHECKING PROXIMITY SWITCH ACTUATION DISPLAY LAMP
• 6.3.37. PROCEDURE FOR CHECKING DIODE
• 6.3.38. METHOD OF CONNECTING TADAPTER FOR HST CONTROLLER
• 6.3.39. STARTING KOMTRAX TERMINAL OPERATIONS
• 6.3.40. INDICATOR LAMPS OF KOMTRAX TERMINAL
• 6.3.41. SPECIAL FUNCTIONS OF MACHINE MONITOR
• 6.3.42. FLOW OF MODES AND FUNCTIONS
• 6.3.43. FAILURE CODE TABLE
• 6.3.44. PM CLINIC INSPECTION CHART
• 6.4. TROUBLESHOOTING
• 6.4.1. POINTS TO REMEMBER WHEN TROUBLESHOOTING
• 6.4.2. SEQUENCE OF EVENTS IN TROUBLESHOOTING
• 6.4.3. PRECAUTIONS WHEN CARRYING OUT MAINTENANCE
• 6.4.4. CHECKS BEFORE TROUBLESHOOTING
• 6.4.5. CATEGORIES,PROCEDURE,AND METHOD OF USING TROUBLESHOOTING CHARTS
• 6.4.6. PHENOMENA CONSIDERED TO BE FAILURES AND TROUBLESHOOTING NO.
• 6.4.7. CONNECTION TABLE FOR CONNECTOR PIN NUMBERS
• 6.4.8. TADAPTER TABLE
• 6.4.9. CONNECTOR TYPES AND MOUNTING LOCATIONS
• 6.4.10. CONNECTOR LAYOUT DRAWING
• 6.4.11. TROUBLESHOOTING OF HST CONTROLLER SYSTEM (HST MODE)
• 6.4.12. TROUBLESHOOTING OF TRAVEL DAMPER SYSTEM(ECSS MODE)
• 6.4.13. TROUBLESHOOTING OF MONITOR SYSTEM(MON MODE)
• 6.4.14. TROUBLESHOOTING OF ELECTRICAL SYSTEM (E MODE)
• 6.4.15. TROUBLESHOOTING OF HYDRAULIC, MECHANICAL SYSTEM(H MODE)
• 6.4.16. TROUBLESHOOTING OF ENGINE (S MODE)
• 7. DISASSEMBLY AND ASSEMBLY
• 7.1. How to read this manual
• 7.2. Precautions when carrying out operation
• 7.3. Special tool list
• 7.4. Sketch of special tools
• 7.5. Removal, installation of fuel injection pump assembly
• 7.6. Removal, installation of nozzle holder assembly
• 7.7. Removal, installation of cylinder head assembly
• 7.8. Removal, installation of engine assembly
• 7.9. Removal, installation of radiator assembly
• 7.10. Removal, installation of air aftercooler
• 7.11. Removal, installation of hydraulic oil cooler assembly
• 7.12. Removal, installation of cooling fan and fan motor assembly
• 7.13. Removal, installation of fuel tank assembly
• 7.14. Removal, installation of transfer
• 7.15. Disassembly, assembly of transfer assembly
• 7.16. Removal, installation of parking brake assembly
• 7.17. Disassembly, assembly of parking brake assembly
• 7.18. Removal, installation of front axle assembly
• 7.19. Removal, installation of rear axle assembly
• 7.20. Disassembly, assembly of axle housing assembly
• 7.21. Disassembly, assembly of differential assembly
• 7.22. Removal, installation of HST pump and 4gear pump assembly
• 7.23. Removal, installation of HST motor 1 assembly
• 7.24. Removal, installation of HST motor 2 assembly
• 7.25. Removal, installation of work equipment control valve assembly
• 7.26. Removal, installation of travel damper valve assembly (If equipped)
• 7.27. Removal, installation of hydraulic tank assembly
• 7.28. Removal, installation of work equipment assembly
• 7.29. Disassembly and assembly of HST pump assembly
• 7.30. Disassembly and assembly of HST motor assembly
• 7.31. Disassembly, assembly of hydraulic cylinder assembly
• 7.32. Removal, installation of operators cab assembly
• 7.33. Removal, installation of operators cab glass (Stuck glass)
• 7.34. Removal, installation of center hinge pin
• 7.35. Removal, installation of counterweight
• 7.36. Removal, installation of air conditioner unit assembly
• 7.37. Removal, installation of air conditioner compressor assembly
• 7.38. Removal, installation of monitor panel
• 7.39. Removal, installation of HST controller assembly
• 8. OTHERS
• 8.1. HYDRAULIC CIRCUIT DIAGRAM
• 8.2. ELECTRICAL CIRCUIT DIAGRAM 1/4(1/4)
• 8.3. ELECTRICAL CIRCUIT DIAGRAM 1/4(2/4)
• 8.4. ELECTRICAL CIRCUIT DIAGRAM 1/4(3/4)
• 8.5. ELECTRICAL CIRCUIT DIAGRAM 1/4(4/4)
• 8.6. ELECTRICAL CIRCUIT DIAGRAM 2/4
• 8.7. ELECTRICAL CIRCUIT DIAGRAM 3/4
• 8.8. ELECTRICAL CIRCUIT DIAGRAM 4/4
• 8.9. ELECTRICAL CIRCUIT DIAGRAM (A1 SIZE)
• 8.10. CONNECTORS TABLE AND ARRANGEMENT DRAWING (A1 SIZE)