Komatsu WA90-5 Wheel Loader Operation & Maintenance Manual
261 pages · Publication VEAM270100
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- Models
- WA90-5
- Serial coverage
- WA90-5 H50051- and up
- Manual type
- Operation & Maintenance Manual
- Pages
- 261
- Publication
- VEAM270100
- Condition
- Brand new

What's inside
From the manual's own table of contents: 17 sections, 288 entries. See sample pages (PDF, 426 KB)
Introduction20 topics
- Foreword
- EU Directives
- Safety information
- Introduction
- Intended use
- Breaking-in the machine
- Location of plates
- Machine identification plate
- Engine name-plate
- Axle serial no. plate
- Transmission serial no. plate
- ROPS/FOPS-Cab serial no. plate
- Operator’s seat serial no. plate
- Table to enter serial no. and distributor
- Dimensions, weights and operating data
- CE-conforming equipment
- CE-conforming equipment – part 1
- CE-conforming equipment – part 2
- Manufacturer-supplied CE-conforming equipment
- Loading and securing
Safety48 topics
- General safety measures
- Safety instructions
- Safety devices
- Emergency exit
- Clothing and personal protection
- Machine modifications
- Before you leave the driver’s seat
- Mounting and dismounting
- Fire prevention and fire fighting
- Protection against asbestos dust
- Protection against injuries
- Working at high temperatures
- Roll-over protection system (ROPS)
- Attachment for protection against falling objects (FOPS)
- Attachments
- Battery
- Safety precautions during operation
- Prior to daily starting up
- Workplace safety
- In the driver's cab
- Indoor operation
- Gas, dust, and inflammable vapours
- Mirrors, windows and lighting
- Machine operation
- Before you start the engine
- Reversing
- Driving
- Driving on slopes
- Emergency Lowering System
- Working close to power lines
- Loading
- Good Vision
- Working on snow
- Height limitation
- Brakes
- Working on loose soil
- Working with the forklift truck attachment
- Parking the machine
- Transport
- Loading and unloading the machine
- Transport
- Precautions for maintenance
- Personnel
- Before carrying out maintenance
- During maintenance
- Tyres
- Safety labels on the machine
- Positions and order numbers of safety labels
Operation86 topics
- General view
- General view of the machine
- Controls and indicators
- Overall view
- Switches, controls and warning lights
- Description of the individual elements
- Instrument panel
- Warning lights
- Control lamps
- Measuring indicators
- Switches
- Control levers and pedals
- Articulated steering locking
- Traction device
- Door unlocking system
- Alarm horn for reverse driving – option
- Fuses
- Slow-blowing fuses
- Adjusting the heater and ventilation system
- Air-conditioning
- Operation
- Pre-start checks
- Visual inspection
- Pre-start checks
- Adjustments prior to machine start
- Adjusting the driver’s seat
- Starting the engine
- Warming up the engine
- Driving with the machine
- Start-up
- Limiting the maximum speed
- Changing the driving direction
- Turning and steering
- Braking
- Stopping the machine
- Operating the work equipment
- Multifunctional lever
- Control lever for special equipment
- Switching lever of bucket
- Working with the wheel loader
- Tyre-appropriate operation
- Switching on the 100 % differential lock (if equipped)
- Loading work
- Removal work
- Excavation work
- Planing
- Transporting
- Unloading
- Working with the forklift truck attachment
- Precautions for special operations
- Permissible water depth
- Working on snow
- Dumping on steep slopes
- Working in the vicinity of electrical overhead lines
- Operation on slopes
- Working on loose soil
- If the service brake breaks down
- Precautionary measures when driving up or down
- Precautionary measures during machine travel
- Adjusting the position of the work equipment
- Selecting a work unit
- Removing the work unit
- Picking up the multi-purpose bucket
- Removing the multi-purpose bucket
- Level indicator for the bucket
- Parking the machine
- Switching off the engine
- Check after stopping the engine
- Locking
- Tyre handling
- Precautionary measures when handling tyres
- Tyre pressure
- Transporting the machine
- Securing the articulated steering
- Lifting the machine
- Driving the machine onto loading area of transport vehicle
- Securing the machine during the transport
- After transport
- Cold weather operation
- Before the cold season
- Precautions after completion of work
- After the cold season
- Long-term storage
- Before storage
- During storage
- After storage
Troubleshooting15 topics
- Towing the machine
- Starting the engine with a booster cable
- For insufficient braking effect
- Checking the service brake
- Checking the parking brake function
- Emergency steering properties
- Emergency lowering
- Other troubles
- Electrical system
- Engine
- Hydraulic system
- Brakes
- Steering
- Axles
- Driver's cab
Maintenance85 topics
- Maintenance guide
- Maintenance basics
- Oil, fuel and coolant specifications
- Fuel
- Coolant
- Grease
- Storing oil and fuel
- Filters
- Biodegradable hydraulic oil and lubricants
- Specifications of the electrical system
- Wearing parts list
- Lubricants, fuels and filling capacities
- Tools and standard tightening torques (bolts, nuts)
- Introduction of recommended tools
- Torque list
- Periodical replacement of safety-critical parts
- Maintenance schedule chart
- Service procedure
- Pre-start checklist
- Cooling system – checking the coolant level, topping up coolant
- Cleaning the radiator segments
- V-Belt, checking the condition
- Engine, checking the oil level, topping up oil
- Checking the fuel level – refuelling
- Water separator at the fuel filter – Draining water and dirt sediments
- Hand pump - Checking the oil level
- Checking the controls
- Checking the electrical connections
- Heater/air conditioning – checking rate of air flow
- Miscellaneous tests before starting work
- Maintenance upon demand
- Checking the air-conditioning system
- Checking the window washing-fluid level, adding fluid
- Re-charging a built-in battery
- Maintenance after the first 50 operating hours
- Hydraulic system, replacing the filter insert
- Checking and tightening the wheel nuts
- Maintenance after the first 250 operating hours
- Front and rear axle – oil change
- Transfer box – changing oil
- Checking and adjusting the valve clearance
- Maintenance every 10 operating hours
- Lubrication of articulated steering
- Maintenance every 50 operating hours
- Battery – checking the acid level
- Lubrication of work unit
- Maintenance every 250 operating hours
- Service brake – Checking the brake pads
- V-Belt, generator – checking and adjusting the tension
- Air filter, removing and re-installing the filter insert, checking and cleaning the filter insert
- Lubrication, steering cylinder
- Lubrication, self-aligning bearings of rear axle
- Maintenance every 500 operating hours
- Service brake - Checking the brake pads and brake discs, checking the oil level
- Engine – changing oil
- Replacing the oil filter cartridge
- Changing the fuel filter element
- Bleeding the fuel system
- Bleeding the low pressure side
- Bleeding the high pressure side
- Air filter, replacing the filter insert, replacing the safety filter
- Heater/air conditioning – cleaning/replacing filter fleece
- Multi-functional lever accumulator - checking gas pressure
- E.C.S.S.-pressure accumulator (Option) - checking gas pressure
- Front and rear axle – checking the oil level
- Transfer box – checking and refilling oil
- Maintenance every 1000 operating hours
- V-Belt, generator – checking and adjusting the tension
- Service Brake - Checking and refilling oil
- Checking and adjusting system pressures
- Hydraulic – Exchanging the venting filter
- Hydraulic system, replacing the filter insert
- Maintenance every 1500 operating hours
- Front and rear axle – changing oil
- Transfer box – changing oil
- Maintenance every 2000 operating hours
- Cooling system – exchanging coolant and cleaning the system
- Checking and adjusting the valve clearance
- Hydraulic system - changing oil
- Ventilating the hydraulic oil tank
- Checking the fuel pump
- Checking the fuel and coolant tubes, replacing the tubes (if required)
- Checking the water pump
- Maintenance every 4000 operating hours
- Lubrication, drive shaft
Technical data3 topics
- Noise emission levels
- Vibration level
- Limit values for slopes
Special equipment and attachments7 topics
- E.C.S.S-electronics
- Structure and functioning principle of the E.C.S.S-electronics
- Precautionary measures for switching on the E.C.S.S-electronics
- Operating the E.C.S.S-electronics
- Switching ON the E.C.S.S.-electronics
- Switching OFF the E.C.S.S-electronics
- Precautions when handling the accumulator
Notes5 topics
- Static tipping load, straight kg
- Static tipping load, 40° angle kg
- Working load kg
- Operating weight kg
- Turning radius over bucket mm
H Distance articulated steer. - front axle mm2 topics
- Ground clearance, axle /transfer gear mm
- ground clearance, drive shaft mm
Inside this manual
Real pages from this operation & maintenance manual (261 pages). Open the sample pages (PDF, 425 KB)
- Controls and operation, page 121: 3.3. Operation
- Specifications, page 145: 3.4. Transporting the machine
- Maintenance, page 241: 5.7.12. Maintenance every 4000 operating hours
Other manuals for this machine
Save 10% on 2 manuals, 15% on 3 or more. Other manuals for the WA90-5 are listed below. Editions cover different serial number ranges: check the serial coverage and tick only the ones that match your machine.
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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.
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, 261 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).