Komatsu WA320-3 Wheel Loader Operation and Maintenance Manual (PEN00259-00)
On a WA320-3 that’s loading trucks, feeding hoppers, or pushing stockpiles all day in a quarry or yard, this Operation and Maintenance Manual is what I use to keep the loader predictable and available. It lays out a sensible rhythm for daily checks, periodic services, and what to watch as hours build up. If, for example, the machine starts feeling sluggish on travel or lift, I’ll go back to this book to verify inspection points, trace possible causes, and decide whether it’s a simple service item or needs shop time.
Applications & Use Cases
- Plan preventive maintenance so you can schedule greasing, filter changes, and inspections around production instead of after a breakdown.
- Standardize daily walk-arounds for operators, so they inspect the same key wear points and fluid levels every shift.
- Trace early signs of trouble—unusual noises, heat, or slow hydraulics—using the manual’s recommended checks before damage spreads.
- Align service records with the manual’s general interval guidance to justify parts stocking and downtime windows.
- Train new operators on correct operating habits that reduce abuse and extend component life.
FAQ
Q: Can I keep this manual on a tablet in the cab?
A: Yes, it works well digitally; just make sure pages with checklists or diagrams are easy to zoom and read in bright light.
Q: Is it worth printing sections of this manual?
A: I’d print the routine inspection and service pages and keep them in a binder in the shop or service truck for quick reference.
Safety Note
Always follow the manual’s safety instructions and lockout procedures before inspecting, adjusting, or servicing the loader.
📘 Show Index
Komatsu WA320-3 Wheel Loader Index:
- COVER
- 1. FOREWORD
- 2. SAFETY INFORMATION
- 3. INTRODUCTION
- 4. LOCATION OF PLATES, TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR
- 5. CONTENTS
- SAFETY
- 6. GENERAL PRECAUTIONS
- 7. PRECAUTIONS DURING OPERATION
- 7.1 BEFORE STARTING ENGINE
- 7.2 AFTER STARTING ENGINE
- 7.3 TRANSPORTATION
- 7.4 BATTERY
- 7.5 TOWING
- 8. PRECAUTIONS FOR MAINTENANCE
- 8.1 BEFORE CARRYING OUT MAINTENANCE
- 8.2 DURING MAINTENANCE
- 8.3 TIRES
- 9. POSITION FOR ATTACHING SAFETY LABELS
- OPERATION
- 10. GENERAL VIEW
- 10.1 GENERAL VIEW OF MACHINE
- 10.2 GENERAL VIEW OF CONTROLS AND GAUGES
- 11. EXPLANATION OF COMPONENTS
- 11.1 MACHINE MONITOR
- 11.2 SWITCHES
- 11.3 CONTROL LEVERS, PEDALS
- 11.4 STEERING COLUMN TILT LEVER
- 11.5 CAP WITH LOCK
- 11.6 SAFETY BAR
- 11.7 TOWING PIN
- 11.8 GREASE PUMP
- 11.9 BACKUP ALARM
- 11.10 FUSE
- 11.11 SLOW-BLOW FUSE
- 11.12 STORAGING PLACE OF THIS MANUAL
- 11.13 TAKING OFF POWER
- 11.14 TAKING OFF POWER (WITH ROPS CAB)
- 12. OPERATION
- 12.1 CHECK BEFORE STARTING ENGINE
- 12.2 STARTING ENGINE
- 12.3 OPERATIONS AND CHECKS AFTER STARTING ENGINE
- 12.4 MOVING MACHINE OFF
- 12.5 CHANGING GEAR SPEED
- 12.6 CHANGING DIRECTION
- 12.7 TURNING
- 12.8 STOPPING MACHINE
- 12.9 OPERATION OF WORK EQUIPMENT
- 12.10 WORK POSSIBLE USING WHEEL LOADER
- 12.11 PRECAUTIONS FOR OPERATION
- 12.12 ADJUSTING WORK EQUIPMENT POSTURE
- 12.13 PARKING MACHINE
- 12.14 CHECKS AFTER COMPLETION OF OPERATION
- 12.15 STOPPING ENGINE
- 12.16 CHECK AFTER STOPPING ENGINE
- 12.17 LOCKING
- 12.18 HANDLING THE TIRES
- 13. TRANSPORTATION
- 13.1 LOADING, UNLOADING WORK
- 13.2 PRECAUTIONS FOR LOADING
- 13.3 LIFTING MACHINE
- 13.4 PRECAUTIONS FOR TRANSPORTATION
- 14. COLD WEATHER OPERATION
- 14.1 PRECAUTIONS FOR LOW TEMPERATURE
- 14.2 PRECAUTIONS AFTER COMPLETION OF WORK
- 14.3 AFTER COLD WEATHER
- 15. LONG-TERM STORAGE
- 15.1 BEFORE STORAGE
- 15.2 DURING STORAGE
- 15.3 AFTER STORAGE
- 16. TROUBLESHOOTING
- 16.1 WHEN MACHINE RUNS OUT OF FUEL
- 16.2 TOWING THE MACHINE
- 16.3 IF BATTERY IS DISCHARGED
- 16.4 OTHER TROUBLE
- MAINTENANCE
- 17. GUIDES TO MAINTENANCE
- 18. OUTLINES OF SERVICE
- 18.1 OUTLINE OF OIL, FUEL, COOLANT
- 18.2 OUTLINE OF ELECTRIC SYSTEM
- 19. WEAR PARTS LIST
- 20. USE OF FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE
- 21. STANDARD TIGHTENING TORQUES FOR BOLTS AND NUTS
- 21.1 INTRODUCTION OF NECESSARY TOOLS
- 21.2 TORQUE LIST
- 22. PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS
- 23. MAINTENANCE SCHEDULE CHART
- 23.1 MAINTENANCE SCHEDULE CHART
- 24. SERVICE PROCEDURE
- 24.1 INITIAL 250 HOURS SERVICE
- 24.2 WHEN REQUIRED
- 24.3 CHECK BEFORE STARTING
- 24.4 EVERY 50 HOURS SERVICE
- 24.5 EVERY 100 HOURS SERVICE
- 24.6 EVERY 250 HOURS SERVICE
- 24.7 EVERY 500 HOURS SERVICE
- 24.8 EVERY 1000 HOURS SERVICE
- 24.9 EVERY 2000 HOURS SERVICE
- 24.10 EVERY 4000 HOURS SERVICE
- SPECIFICATIONS
- OPTIONS, ATTACHMENTS
- 26. OPTIONAL PARTS AND ATTACHMENTS
- 27. SELECTING BUCKETS AND TIRES
- 28. CAR RADIO
- 28.1 EXPLANATION OF COMPONENTS
- 28.2 METHOD OF USE
- 28.3 PRECAUTIONS WHEN USING RADIO
- 29. AIR CONDITIONER
- 29.1 GENERAL LOCATIONS AND FUNCTION OF CONTROL PANEL
- 29.2 METHOD OF OPERATION
- 29.3 COOL BOX
- 30. HANDLING E.C.S.S. (ELECTRONIC CONTROLLED SUSPENSION SYSTEM)
- 30.1 METHOD OF OPERATING E.C.S.S.
- 30.2 PRECAUTIONS WHEN OPERATING E.C.S.S. SWITCH
- 31. HANDLING AUTO-GREASING SYSTEM
- 31.1 METHOD OF OPERATING AUTO-GREASING SYSTEM
- 31.2 PRECAUTIONS WHEN HANDLING AUTO-GREASING SYSTEM
- 31.3 TROUBLESHOOTING
- 31.4 SPECIFICTIONS
- 32. OPTION DISPLAY
- 33. HANDLING AUTO-LEVELING, REMOTE POSITIONER
- 33.1 STRUCTURE AND FUNCTION OF AUTO-LEVELING, REMOTE POSITIONER
- 33.2 GENERAL LOCATIONS
- 33.3 METHOD OF OPERATING AUTO-LEVELING, REMOTE POSITIONER
- 33.4 ADJUSTING AUTO-LEVELING, REMOTE POSITIONER
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