Komatsu WA250-3 Parallel Tool Carrier Service Manual
717 pages · Publication CEBM001801
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- Models
- WA250-3
- Serial coverage
- A75001 and up
- Manual type
- Service Manual
- Pages
- 717
- Publication
- CEBM001801
- Condition
- Brand new
What's inside
From the manual's own table of contents: 2 sections, 128 entries. See sample pages (PDF, 599 KB)
General5 topics
- GENERAL
- STRUCTURE AND FUNCTION
- TESTING AND ADJUSTMENT
- DISASSEMBLY AND ASSEMBLY
- MAINTENANCE STANDARD
TROUBLESHOOTING111 topics
- Points to remember when troubleshooting
- Sequence of events in troubleshooting
- Precautions when carrying out maintenance
- Precautions when handling electric equipment
- Handling control box
- Points to remember when handling hydraulic equipment
- Checks before troubleshooting
- Judgement of power train
- Precautions when troubleshooting
- Preventing recurrence of trouble
- Method of using troubleshooting charts
- Connector types and mounting locations
- Connector pin arrangement diagram (1/3)
- Connector pin arrangement diagram (2/3)
- Connector pin arrangement diagram (3/3)
- Connector type and pin identifications
- Electrical circuit diagram
- Preheating system
- Transmission control, parking brake system
- Machine monitor system
- Electrical circuit diagram for work equipment
- S-MODE
- T-MODE
- E-MODE
- M-MODE
- K-MODE
- Eagle air conditioner
- S-1 Starting performance is poor (starting always takes time)
- S-2 Engine does not start
- Engine does not turn
- Engine turns but no exhaust gas comes out (fuel is not being injected)
- Exhaust gas comes out but engine does not start (fuel is being injected)
- S-3 Engine does not pick up smoothly (follow-up is poor)
- S-4 Engine stops during operations
- S-5 Engine does not rotate smoothly (hunting)
- S-6 Engine lacks output (no power)
- S-7 Exhaust gas is black (incomplete combustion)
- S-8 Oil consumption is excessive (or exhaust gas is blue)
- S-9 Oil becomes contaminated quickly
- Fuel consumption is excessive
- Oil is in coolant water, or coolant water spurts back, or water level goes down
- Oil pressure lamp lights up (drop in oil pressure)
- Oil level rises
- Coolant water temperature becomes too high (overheating)
- Abnormal noise is made
- Vibration is excessive
- Trouble data display
- Table of action codes and failure codes
- Main monitor does not work
- When starting switch is turned ON and engine is started immediately, all lamps stay lit
- Speedometer display does not work properly
- Abnormality in shift indicator
- (a) Stays at N even when directional lever is at F
- (b) Stays at N even when directional lever is at R
- and displays E when directional lever is at F
- and displays E when directional lever is at R
- (e) Does not display 1st, 4th
- Does not display 3rd, 4th
- (g) Does not display 2nd, 3rd
- (h) Does not display 1st, 2nd
- High beam does not light up
- Turn signal display does not light up
- (a) Left hand turn signal does not light up
- (b) Right hand turn signal does not light up
- Abnormality in parking display
- (a) Parking lamp does not light up
- (b) Parking lamp stays lit up
- Abnormality in preheating system
- (a) Does not carry out preheating
- (1) Monitor display also does not light up
- (2) Only monitor display lights up
- (b) Only monitor display does not light up
- (c) Always carries out preheating for 1 minute
- (d) Preheating stays on
- (e) Preheating time becomes shorter, or is unstable
- Night lighting does not light up
- Abnormality in front working lamp
- (a) Neither monitor display nor front working lamp light up
- (b) Working lamp lights up but monitor display does not light up
- (c) Monitor lights up but working lamp does not light up
- Abnormality in rear working lamp
- (a) Neither monitor display nor rear working lamp light up
- Abnormality in transmission cut-off
- cut-off function is not switched and display is not given
- (b) Monitor display goes out but cut-off function stays on
- (c) Monitor display lights up but cut-off function is not actuated
- light up for 3 seconds, maintenance monitor does not work
- (a) All lamps on maintenance monitor do not light up for 3 seconds
- (b) Some lamps do not light up
- but do not go out
- (within 3 seconds), all lamps on maintenance monitor do not go out
- K-4 When starer switch is turned ON (engine stopped), CHECK items flash
- (a) Engine oil level display flashes
- (b) Engine water level display flashes
- (c) Brake oil level display flashes
- K-5 When starting switch is turned ON (engine started), CAUTION items flash
- (a) Engine oil pressure display flashes
- (b) Battery charge level display flashes
- K-6 CAUTION items are flashing but alarm buzzer does not sound
- K-7 There is no abnormality in monitor display but alarm buzzer sounds
- Does not light up
- (a) CHECK lamp
- (b) CAUTION lamp
- warning lamp (CHECK lamp, CAUTION lamp) lights up
- (only lighting of maintenance monitor does not light up)
- Service meter does not work
- Service is running even when engine is stopped
- Abnormality in gauge items
- (a) Abnormality in fuel gauge
- (b) Abnormality in engine water temperature gauge
- (c) Abnormality in torque converter oil temperature gauge
DISASSEMBLY AND ASSEMBLY10 topics
- REMOVAL
- INSTALLATION
- DISASSEMBLY
- ASSEMBLY
- Disassembly of FR clutch pack
- Disassembly of 1st and 3rd clutch pack
- Disassembly of 2nd and 4th clutch pack
- Assembly of FORWARD, REVERSE clutch pack
- Assembly of 1st and 3rd clutch pack
- Assembly of 2nd and 4th clutch pack
Inside this manual
Real pages from this service manual (717 pages). Open the sample pages (PDF, 599 KB)
- Specifications, page 31: GENERAL
- Troubleshooting, page 295: METHOD OF USING TROUBLE SHOOTING CHART
- Diagram, page 449: K-14 Abnormality in gauge items
- Foldout diagram, page 193
Other manuals for this machine
Save 10% on 2 manuals, 15% on 3 or more. Other manuals for the WA250-3 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 a service 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.
Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.
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, 717 pages
Quantity one is the manual described above.
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Binder not included
Manuals over about 300 pages may need a standard 3-ring binder, which you can buy locally to keep the pages organized for shop use.
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).