Komatsu D20A-7, D20PL-7, D20PLL-7, D20P-7A, D21A-7, D21P-7A Bulldozer Operation & Maintenance Manual
211 pages · Publication SEAM000904
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What's inside
From the manual's own table of contents: 16 sections, 36 entries. See sample pages (PDF, 249 KB)
Precautions during operation3 topics
- Tramsportation
- Battery oo
- During maintenance
General VieW2 topics
- General view of machine
- General view of controls and QaUgeS
Explanation of components2 topics
- Meters and lamps
- SWITCHES 0.0
T2A. Operation6 topics
- Operations and checks before starting Engine
- Starting engine
- Moving machine Off
- Steering machine
- Parking machine
- Stopping Engine
2B. Operation2 topics
- Check after finishing WOFK
- Tips for longer undercarriage life (D20PL, PLL-7, D20P-7A, D21A-7)
Service procedure4 topics
- When required
- Every 500 Hours Service
- Every 1000 hours service
- Every 2000 hours service
General precautions1 topic
- Precautions related to safety
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, 211 pages
Quantity one is the manual described above.
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60-day returns
Free if the mistake is ours. A manual ordered in error must come back unopened in its shrink-wrap; you pay return shipping and a 20% restocking fee applies. Return policy
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).