Digital Shop manual SEN03320-04 for Komatsu D21A-8E0 and D21P-8E0 small dozers, serial 90001 and up. 4D94LE engine data, power train, undercarriage, hydraulics, troubleshooting. 462 pages.
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| Brand | Komatsu |
|---|---|
| Model | D21A-8E0, D21P-8E0 |
| Manual Number | SEN03320-04 |
| Models | D21A-8E0, D21P-8E0 |
| Serial | 90001 and up |
| Engine | 4D94LE-2 |
| Machine Type | Small bulldozer |
| Pages | 462 |
| Compatibility | Komatsu D21A-8E0 and D21P-8E0 bulldozers, serial 90001 and up. Shop manual SEN03320-04. Engine 4D94LE-2. |
| Format | |
| Delivery | Instant, after checkout |
| Product code | KOM-SEN03320-04 |
The D21 is Komatsu's smallest dozer, popular with farms, landscapers and small contractors. SEN03320-04 is the shop manual for the -8E0 versions, the D21A and the D21P (low ground pressure).
D21A-8E0 and D21P-8E0 from serial 90001. The engine listed is the 4D94LE-2.
It starts with the index, specs and foreword. The structure, function and maintenance standard chapter covers the power train, undercarriage, hydraulics, work equipment and electrical system, with the wear limits for each. Testing and adjusting gives the pressures and settings, and the troubleshooting chapter has the step-by-step diagnosis. Disassembly and assembly covers the teardown and rebuild of the main components.
Most D21s are owner-operated and serviced, often well past their first few thousand hours. The book helps with the jobs these machines usually need: steering clutch and brake problems, undercarriage wear, blade hydraulics and electrical faults.
Most people use a book like this one section at a time. Look up the system that's giving trouble, read how it's meant to work, test it against the standard values, and only then order parts. That order saves money, because a reading that's close to spec usually points somewhere other than the part you suspected first. You can print the pages for the job and keep the PDF on a tablet for everything else.
This is for the -8E0. Older D20 and D21 machines use different manuals.
PDF, 462 pages, English. Download link straight after checkout. We're an independent seller with no link to Komatsu.
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