Komatsu WA450-5L Wheel Loader Operation and Maintenance Manual (CEAM008902)
This WA450-5L wheel loader usually spends its life in quarries, gravel pits, and heavy construction sites, loading trucks all day in dust and vibration. This Operation and Maintenance Manual is what you use to set a sane service rhythm and keep it doing that without surprise failures. When a driver reports sluggish hydraulic response on a cold morning, this is the book you grab to verify the correct warm-up procedure, confirm basic checks, and rule out simple misuse before you start tearing into components.
Applications & Use Cases
- Plan preventive maintenance so you can group services during planned shutdowns instead of losing time mid-shift.
- Trace early wear signs—unusual noises, leaks, or warning lights—against the recommended checks before calling in major repairs.
- Train new operators on proper start-up, shutdown, and daily walk-around so they don’t abuse the loader.
- Verify correct inspection points for pins, linkages, tires, and filters to keep the machine tight and predictable under load.
- Standardize fluid and filter changes across your fleet without guessing or relying on memory.
FAQ
Q: Can I keep this manual on a tablet in the cab?
A: Yes, it’s practical to use digitally; just bookmark key pages for daily checks and service routines.
Q: Is it worth printing sections of this manual?
A: Many shops print the inspection and service pages, laminate them, and hang them at the service bay for quick reference.
Safety Note
Always follow the manual’s safety and lockout procedures before inspecting, adjusting, or servicing this loader.
📘 Show Index
Komatsu WA450-5L Wheel Loader Index:
- INTRODUCTION
- FOREWORD
- SAFETY INFORMATION
- APPROVED AND NON-APPROVED USES
- PRODUCT IDENTIFICATION
- MACHINE SERIAL NUMBER
- ENGINE SERIAL NUMBER AND EMISSION LABEL
- SERVICE METER LOCATION
- SERIAL NUMBERS AND DEALER INFORMATION
- CONTENTS
- SAFETY
- GENERAL SAFETY RULES AND PRECAUTIONS
- GENERAL SAFETY RULES
- SAFETY FEATURES
- PERSONAL PROTECTIVE EQUIPMENT
- UNAUTHORIZED MODIFICATIONS
- LEAVING OPERATOR’S COMPARTMENT
- MOUNTING AND DISMOUNTING
- FIRE PREVENTION FOR FUEL AND OIL
- DUST HAZARD PRECAUTIONS
- CRUSH OR PINCH POINT DANGERS
- FIRE EXTINGUISHER AND FIRST AID KIT
- INSIDE OPERATOR’S COMPARTMENT
- PRECAUTIONS WHEN USING ROPS
- PRECAUTIONS FOR ATTACHMENTS
- STARTING YOUR WORK OPERATIONS
- WORK SITE HAZARDS
- AVOIDING DANGEROUS SITUATIONS
- WORKING CLEARANCES
- RULES FOR ROAD TRAVEL
- TRAVELING IN REVERSE
- TRAVELING ON ICY OR SNOW-COVERED SURFACES
- WORKING ON LOOSE OR UNSTABLE GROUND
- TRAVEL ON SLOPES
- PARKING THE MACHINE
- PRECAUTIONS DURING MAINTENANCE OPERATIONS
- WARNING TAGS
- EQUIPMENT STORAGE
- WORKING UNDER THE MACHINE
- USING DROP LAMPS
- KEEPING THE MACHINE CLEAN
- RUNNING THE MACHINE DURING MAINTENANCE
- RULES FOR REFUELING THE MACHINE
- COOLING SYSTEM PRECAUTIONS
- BATTERY PRECAUTIONS
- STARTING THE MACHINE
- HIGH PRESSURE HOSES
- HIGH TEMPERATURES AREAS
- DISPOSAL OF WASTE MATERIALS
- INFLATING TIRES
- ACCUMULATOR
- CRITICAL PARTS
- VIBRATIONS TO WHICH THE OPERATOR IS EXPOSED
- SAFETY AND WARNING DECALS
- LOCATION OF THE SAFETY DECALS
- LOCATION OF SAFETY LABELS
- OPERATION
- GENERAL VIEW OF MACHINE
- OUTSIDE VIEW OF THE MACHINE
- INSIDE VIEW OF THE CAB
- DESCRIPTION OF ALERTS, GAUGES AND SWITCHED SYSTEMS
- INSTRAMENT BEZEL
- SWITCH PANELS
- DESCRIPTION OF ALERTS, GAUGES AND MONITOR SYSTEM
- MACHINE ELECTRONIC MONITORING DISPLAY
- MONITOR MODE SELECTOR SWITCHES
- MONITOR DISPLAY INFORMATION
- EMERGENCY STOP WARNING SYSTEM
- CAUTION ALERT WARNING SYSTEM
- INSPECTION AND MAINTENANCE ALERT WARNING SYSTEM
- MODE ALERT LAMPS
- GAUGE DISPLAY
- MACHINE MONITOR
- MACHINE SWITCHES AND CONTROLS
- SWITCH LOCATION
- TRANSMISSION CUT-OFF SWITCH
- LAMP SWITCH
- E.C.S.S. SWITCH
- EXPLANATION OF RADIO COMPONENTS
- LOCATIONS AND FUNCTION OF AIR CONDITIONER CONTROL PANEL
- CONTROL LEVERS, PEDALS
- SECURITY AND LOCKS
- IGNITION KEY LOCKED AREAS
- PADLOCKED AREAS
- SAFETY FEATURES
- PASSIVE SAFETY FEATURES
- ACTIVE SAFETY FEATURES
- MACHINE FEATURES
- CAB DOORS
- ELECTRICAL
- MACHINE CAB AND CHASSIS
- PRECAUTIONS BEFORE STARTING WORK OPERATIONS
- PRE-OPERATIONAL CHECKS
- START-UP PROCEDURES
- OPERATIONS AND CHECKS AFTER STARTING ENGINE
- TRAVELING, STOPPING AND PARKING THE MACHINE
- TRAVELING
- STOPPING AND PARKING THE MACHINE
- EMERGENCY STEERING
- USING THE EMERGENCY STEERING
- STARTING YOUR WORK OPERATIONS
- WORK EQUIPMENT
- SCOOPING A LOAD OR CUTTING A GRADE
- LEVELING OPERATIONS
- PUSHING OPERATION
- LOAD AND CARRY OPERATIONS
- LOADING OPERATIONS
- PRECAUTIONS DURING OPERATION
- PERMISSIBLE WATER DEPTH
- IF WHEEL BRAKE DOES NOT WORK
- PRECAUTIONS WHEN DRIVING UP OR DOWN SLOPES
- PRECAUTIONS WHEN DRIVING THE MACHINE
- PRECAUTIONS REGARDING BRAKE FUNCTION
- WORK EQUIPMENT AND MACHINE POSTURE
- TRANSPORTING THE MACHINE
- LOADING AND SECURING THE MACHINE
- LIFTING THE MACHINE
- LIFTING LOCATIONS AND PROCEDURES
- USING WIRE ROPE
- TOWING THE MACHINE
- COLD WEATHER OPERATION
- FUEL AND LUBRICANTS
- COOLANT
- PRECAUTIONS AFTER COMPLETION OF WORK
- AFTER COLD WEATHER
- WARMING UP THE STEERING
- MAINTENANCE
- GUIDES TO MAINTENANCE
- CHECK SERVICE METER
- KOMATSU GENUINE REPLACEMENT PARTS
- KOMATSU GENUINE OILS
- ALWAYS USE CLEAN WASHER FLUID
- ALWAYS USE CLEAN OIL AND GREASE
- CHECKING FOR FOREIGN MATERIALS IN DRAINED OIL AND ON FILTERS
- FUEL STRAINER
- WELDING INSTRUCTIONS
- DO NOT DROP THINGS INSIDE THE MACHINE
- DUSTY WORKSITES
- AVOID MIXING OIL
- LOCKING INSPECTION COVERS
- BLEEDING AIR FROM HYDRAULIC CIRCUIT
- PRECAUTIONS WHEN INSTALLING HYDRAULIC HOSES
- CHECKS AFTER INSPECTION AND MAINTENANCE
- SYSTEMS TROUBLESHOOTING CHARTS
- ELECTRICAL SYSTEM
- CHASSIS
- ENGINE
- OUTLINES OF SERVICE
- HANDLING OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC
- COOLANT
- GREASE
- PERFORMING KOWA (KOMATSU OIL WEAR ANALYSIS)
- KOWA ANALYSIS ITEMS
- OUTLINE OF ELECTRIC SYSTEM
- WEAR PARTS LIST
- FUEL, COOLANT AND LUBRICANTS
- PROPER SELECTION OF FUEL, COOLANT AND LUBRICANTS
- LUBRICANT AND COOLANT SUPPLIER RECOMMENDATIONS
- STANDARD TIGHTENING TORQUES FOR FASTNERS AND HOSES
- CLEANING THE MACHINE
- PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS
- MAINTENANCE SCHEDULE CHART
- GENERAL MAINTENANCE AND INSPECTION
- EVERY 50 HOURS SERVICE
- EVERY 100 HOURS SERVICE
- EVERY 250 HOURS SERVICE
- EVERY 500 HOURS SERVICE
- EVERY 1000 HOURS SERVICE
- EVERY 2000 HOURS SERVICE
- EVERY 4000 HOURS SERVICE
- EVERY 8000 HOURS SERVICE
- GENERAL MAINTENANCE AND INSPECTION
- INITIAL 250 HOURS SERVICE
- EVERY SPECIFIC HOURS SERVICE
- EVERY 50 HOURS OF SERVICE
- EVERY 100 HOURS SERVICE
- EVERY 250 HOURS OF SERVICE
- EVERY 500 HOURS SERVICE
- EVERY 1000 HOURS SERVICE
- EVERY 2000 HOURS SERVICE
- EVERY 4000 HOURS SERVICE
- EVERY 8000 HOURS SERVICE
- SPECIFICATIONS
- SPECIFICATIONS
- WA450-5L WITH BOLT-ON CUTTING EDGE
- MACHINE DIMENSIONS AND WEIGHTS
- MACHINE SYSTEMS SPECIFICATIONS
- ENGINE
- TRANSMISSION
- AXLES AND FINAL DRIVES
- BRAKES
- STEERING SYSTEM
- SERVICE REFILL CAPACITIES
- OPTIONS, ATTACHMENTS
- MONITOR WITH LOAD METER
- LOAD METER
- SWITCHES
- LOAD METER FUNCTIONS
- USING LOAD METER DISPLAY
- PRINTER OUTPUT
- TORQUE CONVERTER LOCK-UP
- GENERAL LOCATIONS
- WARNING/LIMIT FUNCTIONS FOR TRAVEL SPEED
- WASTE HANDLER ENGINE COOLING FAN CONTROL SYSTEM
- HANDLING JOYSTICK STEERING SYSTEM
- EXPLANATION OF COMPONENTS
- STRUCTURE AND FUNCTION OF JOYSTICK STEERING
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