Komatsu D20A-6, D20P-6, D20P-6A, D20PL-6, D20PLL-6, D20S-6, D20Q-6, D21A-6, D21E-6, D21P-6, D21P-6A, D21P-6B, D21PL-6, D21S-6, D21S-6A, D21Q-6 Shop Manual
Shop manual for Komatsu D20 and D21 series bulldozers, covering engine, power train, hydraulic system, and more. Part number SEBM01040604. Get accurate diagnostics and repair procedures.
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Sample pages from the Komatsu D20A-6, D20P-6, D20P-6A, D20PL-6, D20PLL-6, D20S-6, D20Q-6, D21A-6, D21E-6, D21P-6, D21P-6A, D21P-6B, D21PL-6, D21S-6, D21S-6A, D21Q-6 Shop Manual manual
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Komatsu Models Covered & Key Technical Specifications
Komatsu D20A-6, D20P-6, D20P-6A, D20PL-6, D20PLL-6, D20S-6, D20Q-6, D21A-6, D21E-6, D21P-6, D21P-6A, D21P-6B, D21PL-6, D21S-6, D21S-6A, D21Q-6 (SEBM01040604) -- 1992-2003 Procedural Reference Manual | Unit
- Verified Liquid Volume: 8.0 L establishes the standard refill capacity for the engine oil.
- Key Gap Specs: For optimal operation, 0.35 mm dictates the minimum valve clearance when cold.
- Principal Electrical Specs: The electrical system voltage is 24 V DC, ensuring reliable power delivery.
- Advanced Thermal Rating: The engine oil temperature range is 80-110°C, defining operational limits.
- Defined Unit Dimensions: The overall weight of the transmission assembly is approximately 70 kg.
- General Reservoir Specs: The main clutch case capacity requires 5 L of oil for proper lubrication.
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Standard Training Overhaul Manual: Bulldozer Komatsu D20A-6, D20P-6, D20P-6A, D20PL-6, D20PLL-6, D20S-6, D20Q-6, D21A-6, D21E-6, D21P-6, D21P-6A, D21P-6B, D21PL-6, D21S-6, D21S-6A, D21Q-6 bulldozer shop manual Technical-Guide
Maintenance-Category: D20/D21 Series // Specification-Class: Bulldozer / Powertrain Logic // Maintenance-Category: Technical-details.
| Assessment-Parameter | Baseline | Framework |
|---|---|---|
| Engine Specifications | Standard Values | Permissible Values |
| Hydraulic Pressure | kg/cm² | kg/cm² |
| Travel Speed | km/h | km/h |
Diagnostic procedures address the engine, power train, and hydraulic systems. Key operational checks and adjustments are documented, along with detailed disassembly and assembly instructions for major components. The manual includes essential data for maintaining and repairing your Komatsu D20/D21 bulldozer.
Calibration requirements are specified for the engine and hydraulic systems to ensure optimal performance.
Electrical system documentation covers wiring diagrams and component testing for reliable operation.
Suspension service documentation covers the track system and related components.
Disassembly instructions are documented for major assemblies including the engine, transmission, and hydraulic pump.
Wear limits are specified for critical engine and transmission components to ensure longevity.
This manual documents torque specifications for fasteners to ensure proper fastener fatigue prevention.
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