Bulldozer Komatsu D20PL-7, D20PLL-7, D20AG-7, D20P-7A, D20PG-7A, D21A-7, D21AG-7, D21PG-7A, D21S-7, D21QG-7, D21A-7T Shop Manual

Official Komatsu shop manual for the D20PL-7, D20PLL-7, D20AG-7, D20P-7A, D20PG-7A, D21A-7, D21AG-7, D21PG-7A, D21S-7, D21QG-7, and D21A-7T bulldozer models.

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Komatsu Bulldozer Komatsu D20PL-7, D20PLL-7, D20AG-7, D20P-7A, D20PG-7A, D21A-7, D21AG-7, D21PG-7A, D21S-7, D21QG-7, D21A-7T Shop Manual manual page preview - page 1 of 716

Sample pages from the Bulldozer Komatsu D20PL-7, D20PLL-7, D20AG-7, D20P-7A, D20PG-7A, D21A-7, D21AG-7, D21PG-7A, D21S-7, D21QG-7, D21A-7T Shop Manual manual

Komatsu Bulldozer Komatsu D20PL-7, D20PLL-7, D20AG-7, D20P-7A, D20PG-7A, D21A-7, D21AG-7, D21PG-7A, D21S-7, D21QG-7, D21A-7T Shop Manual manual preview page 1 - thumbnail
Komatsu Bulldozer Komatsu D20PL-7, D20PLL-7, D20AG-7, D20P-7A, D20PG-7A, D21A-7, D21AG-7, D21PG-7A, D21S-7, D21QG-7, D21A-7T Shop Manual manual preview page 2 - thumbnail
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Document Details

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Document Number / Seller:
30772 / Richard Torres
File Size:
20.83 MB
File Type:
PDF
Language:
English
Pages:
716
Printable:
Yes
Category:
Bulldozer
Last updated / verified
May 27, 2025

Models Covered & Key Technical Specifications

Commercial Installation Overhaul Manual: Bulldozer Komatsu D20PL-7, D20PLL-7, D20AG-7, D20P-7A, D20PG-7A, D21A-7, D21AG-7, D21PG-7A, D21S-7, D21QG-7, D21A-7T bulldozer shop manual Wiring-Compendium Komatsu D20PL-7 (75001 and up) | Reference Suite.

  • Engineered Thermal Rating: 450 W establishes the active printing consumption Threshold.
  • Defined Feed Speed: For optimal operation, 15-30C defines the environmental limit Framework.
  • Standard Footprint Data: 1200 dpi establishes the maximum print output Architecture.
  • Principal Securement Values: The formatter board requires 64 MB for standard operation Logic.
  • Advanced Clearance Data: 25 ppm Parameters.
  • Primary Climate Parameters: 64 MB establishes the maximum print output Architecture.

Manual Description & Preview

Commercial Installation Overhaul Manual: Bulldozer Komatsu D20PL-7, D20PLL-7, D20AG-7, D20P-7A, D20PG-7A, D21A-7, D21AG-7, D21PG-7A, D21S-7, D21QG-7, D21A-7T bulldozer shop manual Wiring-Compendium

Series-Validation: Komatsu D20PL-7, D20PLL-7, D20AG-7, D20P-7A, D20PG-7A, D21A-7, D21AG-7, D21PG-7A, D21S-7, D21QG-7, D21A-7T // Engineering-Metrics: bulldozer / powertrain Logic // Series-Validation: shop manual technical-details.

Metric Parameters Validation-Data
Operating Weight 3,050 kg 3,360 kg
Blade Capacity 0.89 m³ 0.89 m³
Max. Torque 29.4/2,450 Nm/rpm 29.4/2,450 Nm/rpm

Service sections detail:

  • GENERAL
  • STRUCTURE AND FUNCTION
  • TESTING AND ADJUSTING
  • DISASSEMBLY AND ASSEMBLY
  • MAINTENANCE STANDARD

Timing procedures are documented for the engine and related systems. Technical notes are provided for the power train, hydraulic systems, and control systems. Quality checks are addressed for major components to ensure systematic operation. The engine section documents its construction and function. The power train section details the transmission, final drive, and other related components. The hydraulic system section covers pumps, valves, and cylinders. The troubleshooting chapter addresses common issues and their resolutions. ...documents torque specifications for fasteners to ensure proper pivot-point integrity.

FAQ

Calculate the **precise** pressure specifications for the hydraulic system? keyboard_arrow_down

15.2 MPa (155 kg/cm²) is the set pressure for the main relief valve, and 0.09 MPa (0.9 kg/cm²) is the set pressure for the breaker relief valve for hydraulic tank.

What values ensure **proper** assembly sequence for the power train? keyboard_arrow_down

30 mm is the width across flats for a M24 bolt, which is crucial for correct torque application during power train assembly.

Assess the **standard** service interval parameters for engine oil? keyboard_arrow_down

33 L is the specified capacity for engine oil in the hydraulic system for D21A-7 and D21AG-7 models, with a refill amount of 21 L.

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