Komatsu D20A-6, D20P-6, D20PL-6, D20PLL-6, D21A-6, D21E-6, D21P-6, D21PL-6, D20P-6A, D21P-6A, D21P-6B Operation and Maintenance Manual
Documents Komatsu D20 and D21 series bulldozer service procedures, covering critical systems like engine, hydraulics, and undercarriage. PN SEAM01010601.
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Sample pages from the Komatsu D20A-6, D20P-6, D20PL-6, D20PLL-6, D21A-6, D21E-6, D21P-6, D21PL-6, D20P-6A, D21P-6A, D21P-6B Operation and Maintenance Manual manual
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Models Covered & Key Technical Specifications
Komatsu D20 and D21 series (SEAM01010601) -- Operation & Maintenance Manual Documents Komatsu D20/D21 series bulldozer maintenance procedures | Operation & Maintenance Folder.
- Maximum Velocity Specs: 7.5 km/h is rated at maximum forward travel speed. Matrix.
- Technical Resolution Data: 39.5 HP provides the standard engine output for the D20A, P, PL, PLL-6, D20P-6A models. Standards.
- Specific Temperature Range: For optimal operation, 10°C to 30°C defines the ambient temperature limit for operating the machine. Margin.
- Measured Component Weight: 3530 kg is the established operating weight for the D20A-6. Protocol.
- Published System Capacity: 21 L supports the cooling system fluid capacity. Architecture.
- System Feed Speed: The hydraulic system is calibrated to 6 L refill capacity for many variants. Norms.
Professional Workshop Service Manual & Technical Specifications
Komatsu D20A-6, D20P-6, D20PL-6, D20PLL-6, D21A-6, D21E-6, D21P-6, D21PL-6, D20P-6A, D21P-6A, D21P-6B Operation & Maintenance Manual: Komatsu Bulldozer operation & maintenance manual Electrical-Reference
Specification-Class: Komatsu D20A-6, D20P-6, D20PL-6, D20PLL-6, D21A-6, D21E-6, D21P-6, D21PL-6, D20P-6A, D21P-6A, D21P-6B // Series-Validation: D20 and D21 series / Operation & Maintenance Folder Logic // Reference-Category: Technical-Reference.
| Assessment-Parameter | Technical-Path | Framework |
|---|---|---|
| Operating Weight | D20A-6 | 3530 kg |
| Travel Speed (Forward Max.) | D20A, P, PL, PLL-6, D20P-6A | 7.5 km/h |
| Engine Horsepower | D20A, P, PL, PLL-6, D20P-6A | 39.5 HP |
| Refill Capacity | Hydraulic Tank | 21 L |
The documentation provides guidance on initial operations and checks, covering safety hints, pre-operation inspections, starting and stopping procedures, and machine handling. It details the specific work capabilities of the bulldozer, including cutting, ditching, smoothing, and dozing. The manual also outlines procedures for locking caps, handling batteries, and transportation. Special sections are dedicated to storage, and cold-weather operations, offering advice for maintaining the machine in various conditions.
Fluid capacities are listed for various reservoirs including engine oil, main clutch case, transmission, bevel gear case, final drive case, and hydraulic tank, specifying different oil types and quantities based on ambient temperature and model variant. Information on fuel, coolant, and lubricants, including supplier names and specifications, is also provided.
Tool requirements are listed for specific maintenance tasks, such as filter replacement and lubrication points. The document emphasizes the importance of using genuine Komatsu parts and appropriate lubricants to ensure optimal performance and longevity of the equipment.
Installation guidelines are provided for components like the seat belt and battery. Procedures for removing and installing the battery, including proper connection of booster cables for starting, are detailed. The manual also covers transportation and storage procedures to protect the machine when not in use.
Maintenance guidelines are included for periodic service intervals, such as every 50, 250, 500, 1000, 2000, and 4000 hours. These guidelines cover checks, replacements, and adjustments for various systems and components.
OEM guidelines are included for critical adjustments and checks, such as track tension, blade control, and brake system. The manual also provides a comprehensive troubleshooting guide for common engine and electrical system issues, along with procedures for adjusting steering levers and brake pedals. This manual documents torque specifications for component alignment retention to ensure proper performance and safety. The document also includes detailed information on bleeding air from hydraulic systems and adjusting the idler clearance.
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