Komatsu WA250-6 Wheel Loader Operation & Maintenance Manual
362 pages · Publication CEAM000503
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- Models
- WA250-6
- Serial coverage
- WA250-6 A76001 and up
- Manual type
- Operation & Maintenance Manual
- Pages
- 362
- Publication
- CEAM000503
- Condition
- Brand new
What's inside
From the manual's own table of contents: 505 topics. See sample pages (PDF, 451 KB)
- FOREWORD
- SAFETY INFORMATION
- APPROVED AND NON-APPROVED USES
- Approved Functions
- Non-Approved Functions
- VISIBILITY STANDARD
- Visibility in Immediate Area
- 12-M Radius Visibility
- PRODUCT IDENTIFICATION
- Machine
- Service Meter Location
- Directions of Machine
- Machine Serial Number/Product Identification Number (PIN)
- Engine Serial Number, EPA Regulations
- SERIAL NUMBERS AND DEALER INFORMATION
- SAFETY AND WARNING DECALS
- Location of the Safety Labels
- Safety Labels
- GENERAL SAFETY RULES AND PRECAUTIONS
- General Safety Rules
- Safety at Job Site
- Safety Features
- Clothing and Protective Equipment
- Keep Machine Clean
Show all 505 topics
- Fire and Explosion Prevention
- Fire Caused by Fuel, Oil, Antifreeze, or Window Washer Fluid
- Fire Caused by Accumulation of Flammable Material
- Fire Caused by Electrical Wiring
- Fire Caused by Piping
- Explosion Caused by Lighting Equipment
- Action if Fire Occurs
- Fire Extinguisher and First Aid Kit
- Mounting and Dismounting
- Inside Operator’s Compartment
- Emergency Escape from Operator’s Cab
- Precautions When Standing Up from Operator’s Seat
- Leaving Operator’s Compartment
- Parking the Machine
- Precautions When Using ROPS
- Unauthorized Modification
- Precautions for Attachments and Options
- Precautions When Cleaning Cab Glass
- Asbestos Hazard Alert
- Crush or Pinch-Point Dangers
- Precautions for Ventilation Exhaust Gas
- PRECAUTIONS BEFORE STARTING OPERATIONS
- Pre-Operational Checks
- Ensure Good Visibility
- Signs and Signals
- Precaution for Warning Tag
- Checks Before Starting Engine, Adjustments
- Precautions When Starting
- Precautions in Cold Areas
- Precautions for Job Site
- Work Site Hazards
- Working on Loose or Unstable Ground
- Prohibited Operations
- Avoiding Dangerous Situations
- Working Near High Voltage Cables
- RULES FOR ROAD TRAVEL
- Travel Precautions
- Traveling on Slopes
- Using the Brakes
- Traveling in Reverse
- Operating on Snow or Frozen Surfaces
- PRECAUTIONS DURING INSPECTION AND MAINTENANCE
- Warning Tags
- Workplace Environment
- Systems Equipped with ECSS
- Equipment Storage
- Working Under the Machine
- Using Drop Lamps
- Using Proper Tools
- Keeping the Machine Clean
- Precautions When Welding
- Precautions When Using Hammer
- Noise
- Stopping Engine During Inspection and Maintenance
- Running the Machine During Maintenance
- Rules for Refueling the Machine
- Cooling System Precautions
- Window Washer Fluid
- Battery Information
- Precautions
- Hazards
- Using Booster Cables
- Starting the Machine with Booster Cables
- High-Pressure Precautions
- Precautions for High-Pressure Oil
- Safe Handling of High-Pressure Hoses
- Precautions for High-Pressure Fuel
- High-Temperature Precautions
- High-Temperature Areas
- High-Temperature Coolant
- High-Temperature Oil
- High Voltage
- Accumulator and Gas Spring
- Inflating Tires
- Storing Tires
- Using Compressed Air
- Disposal of Waste Materials
- Critical Parts
- Maintenance of Air Conditioner
- GENERAL VIEW
- General View of Machine
- General View of Controls and Gauges
- Machine Monitor
- EXPLANATION OF COMPONENTS
- Types of Warnings
- Emergency Stop
- Mistaken Operation
- Inspection and Maintenance
- Central Warning Lamp
- Character Display Portion
- Service Meter
- Engine Speed or Travel Speed
- Action Code Display
- Failure Code Display
- Filter, Oil Replacement Time Display
- Emergency Stop Items
- Brake Oil Pressure Caution Lamp
- Engine Oil Pressure Caution Lamp
- Battery Charge Circuit Caution Lamp
- Steering Oil Pressure Caution Lamp (if equipped)
- Caution Items
- Brake Oil Temperature Caution Lamp
- Quick Coupler Operation Pilot Lamp (if equipped)
- Parking Brake Reminder Caution Lamp
- HST Oil Temperature Caution Lamp
- Engine Coolant Temperature Caution Lamp
- Fuel Level Caution Lamp
- Warning/Limit Functions for Travel Speed
- Inspection and Maintenance Items
- Water Separator Caution Lamp
- Radiator Coolant Level Caution Lamp
- Engine Oil Level Caution Lamp
- HST Oil Filter Clogging Caution Lamp
- Air Cleaner Clogging Caution Lamp
- Maintenance Caution Lamp
- Pilot Display Portion
- Parking Brake Pilot Lamp
- Cooling Fan Reverse Rotation Pilot Lamp
- Emergency Steering Pilot Lamp (if equipped)
- Preheating Pilot Lamp
- Directional Selector Pilot Lamp
- Economy Operation Display Lamp
- S Mode Operation Pilot Lamp
- Shift Hold Pilot Lamp
- Traction Control Operation Pilot Light
- Travel Speed Range Selector Switch Position Pilot Lamp
- Directional Lever Position Pilot Lamp
- Turn Signal Pilot Lamp
- Head Lamp High-Beam Pilot Lamp
- Meter Display Portion
- HST Oil Temperature Gauge
- Engine Coolant Temperature Gauge
- Speedometer
- Meter Display Pilot Lamp
- Fuel Gauge
- OTHER FUNCTIONS OF MACHINE MONITOR
- Overall Menu
- Selecting Traction Level
- Selecting HST Changing Function
- Displaying Odometer
- Resetting Filter, Oil Replacement Time
- Entering Telephone Number
- Selecting Language
- Adjusting Monitor Brightness
- Switching Travel Speed/Engine Speed Display
- Switching Travel Speed/Engine Speed Display/Non-Display
- SWITCHES AND CONTROLS
- Starting Switch
- Speed Range Selector Switch
- Variable Shift Control Switch
- Quick Coupler Attachment Switch (if equipped)
- Cooling Fan Auto-Reverse Rotation Switch
- Directional Selector Switch Actuation Switch
- Traction Control Switch
- Max. Traction Switch
- Front Wiper Switch
- Machine Monitor Mode Selector Switch 1
- Machine Monitor Mode Selector Switch 2
- ECSS Switch
- Horn Button
- Lamp Switch
- Turn Signal Lever
- Dimmer Switch
- Front Working Lamp Switch
- Rear Working Lamp Switch
- Hazard Lamp Switch
- Rear Wiper Switch
- Directional Selector Switch
- Cigarette Lighter
- Room Lamp Switch
- Rear Heated Wire Glass Switch
- CONTROL LEVERS, PEDALS
- Directional Lever
- Work Equipment Control Lever
- Work Equipment Lock Lever
- Accelerator Pedal
- Brake Pedals
- Parking Brake Lever
- SECURITY LOCKS AND SAFETY FEATURES
- Steering Tilt Lock Lever
- Frame Lock Bar
- Caps and Covers with Lock
- Fuel Tank Filler Port Cap
- Cover with Lock
- Backup Alarm
- MACHINE FEATURES
- Towing Pin
- Grease Pump
- Cab Door
- Emergency Escape Right Door
- Left Cab Door, Door Open Lock
- Left Cab Door, Knob
- Left Cab Door, Handle
- Left Cab Sliding Window (Lock Release Knob)
- Cab Wiper
- Dust Indicator
- Storage Box
- ELECTRICAL
- Power Outlet
- Fuses
- Fuse Capacity and Name of Circuit
- Slow-Blow Fuse
- WORK OPERATIONS
- Walk-Around Check
- Precautions Before Starting Work Operations
- Check Before Starting Engine
- Check Machine Monitor
- Check Coolant Level, Add Coolant
- Check Oil Level in Engine Oil Pan, Add Oil
- Check Water Separator
- Check Air Cleaner
- Check Fuel Level, Add Fuel
- Check Electric Wiring
- Adjustments
- Adjusting Seat
- Adjusting Wrist Rest
- Adjusting Seat Belt
- Adjusting Mirrors
- Final Checks Before Starting Engine
- Starting Engine
- Normal Starting
- Starting in Cold Weather
- Automatic Warming-Up Operation
- Operations and Checks After Starting Engine
- Checks After Starting Engine
- Breaking in the Machine
- Normal Operation
- Stopping Engine
- Check After Stopping Engine
- Moving the Machine (Directional, Speed), Stopping the Machine
- Moving the Machine
- Changing Direction
- Using Switch to Change between Forward and Reverse
- Stopping the Machine
- Turning
- Emergency Steering (if equipped)
- Operation of Work Equipment
- Lift Arm
- Bucket
- Work Possible Using Wheel Loader
- Digging Operations
- Loading Piled Soil or Blasted Rock
- Digging and Loading on Level Ground
- Leveling Operations
- Pushing Operations
- Load-and-Carry Operations
- Loading Operations
- Cross-Drive Loading
- V-Shape Loading
- Preparations for Loading, Gathering Rocks
- Approaching Facing
- Digging
- Traveling in Reverse After Excavation
- Approaching Dump Truck
- Loading Dump Truck
- Reversing Away From Dump Truck
- Precautions During Work Operations
- Piling Up Loads
- Handling Blasted Rock
- Loosened Boulders
- Pit Excavation
- Cutting Face Operations
- Switching Between Forward and Reverse
- Turning When Tires Are Stationary
- Wheel Brake Does Not Work
- Permissible Water Depth
- Lower the Center of Gravity when Turning
- Driving Up or Down Slopes
- Driving the Machine
- Adjusting Work Equipment
- Adjusting Boom Kickout
- Adjusting Bucket Positioner
- Bucket Level Indicator
- Measuring Dump Angle
- Measuring Bucket Dump Angle
- Measuring Coupler Dump Angle
- Checks After Completion of Operation
- Before Stopping Engine
- After Stopping Engine
- Locking the Machine
- HANDLING TIRES
- Precautions When Handling Tires
- Tire Pressure
- Precautions for Using Load-and-Carry Method
- TRANSPORTATION
- Transportation Procedure
- Loading and Unloading Trailers
- Loading Machine
- Securing Machine
- Unloading Machine
- LIFTING MACHINE
- Lifting Position
- Lifting Procedure
- COLD WEATHER OPERATION
- Precautions for Low Temperature
- Fuel and Lubricants
- Coolant
- Battery
- Precautions After Completion of Work
- After Cold Weather
- LONG-TERM STORAGE
- Before Storage
- During Storage
- After Storage
- AUTOMATIC AIR CONDITIONER
- Control Panel
- Main Power Switch
- Fan Switch
- Air Conditioner Switch
- Auto Switch
- Temperature Control Switch
- FRESH/RECIRC Selector Switch
- Mode Selector Switch
- Method of Operation
- Cooling Operation
- Heating Operation
- Drying-Heating and Demisting Operation
- When Not Using the Air Conditioner Regularly
- Precautions When Using Air Conditioner
- Cool Box
- KOMTRAX
- Basic Precautions
- TROUBLESHOOTING
- When Machine Runs Out of Fuel
- Towing the Machine
- When Engine Can Be Used
- When Engine Cannot Be Used
- Emergency Travel Operation
- If Battery is Discharged
- Removal and Installation of Battery
- Precautions for Charging Battery
- Starting Engine With Booster Cables
- Precautions When Connecting or Disconnecting Booster Cable
- Connecting Booster Cable
- Disconnecting Booster Cable
- Lowering Work Equipment When Engine Has Stopped
- Other Troubleshooting
- Electrical System
- Chassis
- Engine
- 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 Machine
- Dusty Work Sites
- Avoid Mixing Oil
- Locking Inspection Covers
- Bleeding Air from Hydraulic Circuit
- Precautions When Installing Hydraulic Hoses
- Checks After Inspection and Maintenance
- OUTLINES OF SERVICE
- Handling Oil, Fuel, Coolant, and Performing Oil Clinic
- Fuel
- Coolant and Water for Dilution
- Grease
- Storing Oil and Fuel
- Filters
- Performing KOWA (Komatsu Oil Wear Analysis)
- KOWA Analysis Items
- Oil Sampling
- Outline of Electric System
- WEAR PARTS
- Wear Parts List
- RECOMMENDED FUEL, COOLANT, AND LUBRICANTS
- Fuel, Coolant, and Lubricant Ambient Temperature Chart
- Recommended Brands, Other Than Komatsu Genuine Oil
- Biodiesel Usage
- Biodiesel Recommendation for Komatsu Engines
- Biodiesel Terminology
- Certification and Standards
- Warranty and Use of Biodiesel Fuel in Komatsu Engines
- Requirements for Using Biodiesel Fuel in Komatsu Engines
- Properties of Biodiesel
- Komatsu Biodiesel Blend Specification for B5 to B20
- Summary of Recommendations
- STANDARD TIGHTENING TORQUES FOR BOLTS AND NUTS
- Torque List
- PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS
- Safety Critical Parts List
- MAINTENANCE SCHEDULE CHART
- SERVICE PROCEDURE
- Initial 10 Hours Service
- Initial 250 Hours Service
- Initial 1000 Hours Service
- When Required
- Clean, Replace Air Cleaner Element
- Clean Inside of Cooling System
- Check Oil Level in Transfer Case, Add Oil
- Check Axle Oil Level, Add Oil
- Clean Axle Case Breather
- Clean Air Conditioner Condenser
- Check Window Washing Fluid Level, Add Fluid
- Clean Radiator Fins and Cooler Fins
- Turn, Replace Bolt-On Cutting Edge
- Replace Bucket Teeth (if equipped)
- Check Air Conditioner
- Replace Slow-Blow Fuse
- Check Function of Accumulator (ECSS and Brake Damper)
- Select Tires
- Check Tire Pressure
- Clean, Replace Fuel Breather Filter
- Check Before Starting
- Every 50 Hours Service
- Drain Water, Sediment from Fuel Tank
- Every 100 Hours Service
- Lubricate Rear Axle Pivot Pin
- Check Oil Level in Hydraulic Tank, Add Oil
- Clean Element in Air Conditioner Fresh Air Filter
- Every 250 Hours Service
- Check Battery Electrolyte Level
- Check Parking Brake
- Check Air Conditioner Compressor Belt Tension, Adjust
- Check for Loose Wheel Hub Nuts, Tighten
- Clean Element in Air Conditioner Recirculation Filter
- Check Function of Brake Accumulator
- Lubricating
- Every 500 Hours Service
- Change Oil in Engine Oil Pan, Replace Engine Oil Filter Cartridge
- Replace Fuel Prefilter Cartridge
- Every 1000 Hours Service
- Change Oil in Transfer Case
- Clean Transfer Case Breather
- Replace Fuel Main Filter Cartridge
- Replace HST Oil Filter Element
- Check Engine Air Intake Piping Clamps for Looseness
- Check Alternator Drive Belt Tension, Adjust
- Every 2000 Hours Service
- Change Oil in Hydraulic Tank, Replace Hydraulic Filter Element
- Replace Hydraulic Tank Breather Element
- Replace HST Drain Filter
- Change Axle Oil
- Replace Element in Air Conditioner Recirculation Filter, Fresh Air Filter
- Clean Brake Circuit Strainer
- Check Brake Disc Wear
- Check Function of PPC Accumulator
- Check Alternator
- Check Engine Valve Clearance, Adjust
- Check Vibration Damper
- Every 4000 Hours Service
- Check Water Pump
- Check Starting Motor
- Check for Loose Engine High-Pressure Piping Clamps, Hardening of Rubber
- Check for Missing Fuel Spray Prevention Cap, Hardening of Rubber
- Every 8000 Hours Service
- Replace High-Pressure Piping Clamps
- Replace Fuel Spray Prevention Cap
- SPECIFICATIONS
- BUCKET AND TIRES
- AM/FM RADIO CASSETTE STEREO SOUND SYSTEM
- Sound System Components
- Power Switch/Volume
- Auto-Store/Preset Scan Button
- Bass Control Knob
- Treble Control Knob
- Loudness Button
- Time/Radio Display Selector Button
- Tape Eject Button
- Cassette Door
- Fast-Forward, Rewind Buttons
- Preset Buttons
- Metal Tape Button
- Manual Tuning Buttons
- Seek Tuning Buttons
- Band Selector Button
- Setting Preset Buttons
- Using Auto-Preset
- Using Manual Preset
- Listening to Radio
- Listening to Cassette Tape
- Reversing the Tape
- Precautions When Using
- Handling Cassette Tape
- HYDRAULIC QUICK COUPLER
- Removing Attachment
- Installing Attachment
Inside this manual
Real pages from this operation & maintenance manual (362 pages). Open the sample pages (PDF, 449 KB)
- Controls and operation, page 122: Position (a): Traction control OFF (MAX)
- Specifications, page 227: Battery
- Maintenance, page 327: Every 2000 Hours Service
Other manuals for this machine
Save 10% on 2 manuals, 15% on 3 or more. Other manuals for the WA250-6 are listed below. Editions cover different serial number ranges: check the serial coverage and tick only the ones that match your machine.
This manual: Operation & Maintenance Manual CEAM000503$69.75
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This is an operator's manual
Here's how it compares to the other manual types.
Service manual
Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.
This manual
Operator's manual
Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.
Parts manual
Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.
What it's used for
Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.
Service shops and owner/operators who repair their own equipment
Identifying correct parts and seeing how assemblies come apart and go back together
Keeping equipment running with less downtime
Factory manual, 362 pages
Quantity one is the manual described above.
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Other editions and similar models
Questions about model, serial number, engine coverage or contents? Contact us before purchasing and we'll help confirm it's the right manual. Please verify the manual type, machine model, serial number range and engine coverage before purchasing: manuals ordered in error carry a 20% restocking fee (return policy).