Komatsu D20/D21 Series Shop Manual

Service and repair manual for Komatsu D20P-7A, D20PL-7, D20PLL-7, D20AG-7, D20PG-7A, D21A-7, D21AG-7, D21S-7, D21QG-7, D21PG-7A bulldozers from 2000 onwards. Komatsu 010107.

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Document Details

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Document Number / Seller:
28913 / Joseph Young
File Size:
52.21 MB
File Type:
PDF
Language:
English
Pages:
668
Printable:
Yes
Category:
Bulldozer
Last updated / verified
Aug 21, 2025

Models Covered & Key Technical Specifications

Komatsu D20/D21 Series (2000+) Shop Manual

Service and repair manual for Komatsu D20P-7A, D20PL-7, D20PLL-7, D20AG-7, D20PG-7A, D21A-7, D21AG-7, D21S-7, D21QG-7, D21PG-7A bulldozers from 2000 onwards. Komatsu 010107. Spec Value
Model D20P-7A, D20PL-7, D20PLL-7, D20AG-7, D20PG-7A, D21A-7, D21AG-7, D21S-7, D21QG-7, D21PG-7A
Years Covered 2000+
Manual Type Shop Manual
Language English
Pages 668

Specifications

  • System Chassis Data: 3360 kg is the standard operating weight for the bare tractor Baseline.
  • Core Performance Specs: 35 deg represents the maximum gradeability established for all models Configuration.
  • Specific Dimension Data: 2.3 m is the minimum turning radius for standard configurations Benchmarks.
  • Critical Operating Parameters: 0.76 m³ is the average blade capacity across the specified Range.
  • Universal Weight Data: 355 kg is the minimum ground clearance for all models Sequences.
  • Calibrated Power Specs: 29.4 kW is the rated horsepower for engine specifications Baseline.

Professional Workshop Service Manual & Technical Specifications

Komatsu D20/D21 Series (2000+) Shop Manual

Application-Range: D20P-7A, D20PL-7, D20PLL-7, D20AG-7, D20PG-7A, D21A-7, D21AG-7, D21S-7, D21QG-7, D21PG-7A Bulldozers (2000+) // Documentation-Type: Shop Manual / Documentation-Type: Workshop Compendium // Documentation-Type: English

Reference-Grade Instructional Calibration Manual: Komatsu D20/D21 Series Bulldozers (2000+) Workshop Compendium

Integrated-Framework Diagnostic-Logic Framework
Specifications Drawings 01-2 All models include specification drawings.
Specifications 01-6 Comprehensive specifications are provided.
Weight Table 01-30 A detailed weight table is included.
Fuel, Coolant, and Lubricants 01-40 Essential fluid and lubricant information.
Structure and Function 10-1 Analysis of the machine's structure and function.

This manual catalogs major assemblies into procedures, specifications, systems, and tables. It provides detailed information on the following: Power train system, engine control, steering clutch and brake control, hydraulic piping, and various components. The manual also documents torque specifications for various components to ensure proper corrosion joint prevention.

This document is a vital resource for understanding the intricate systems and specifications of your Komatsu bulldozer, ensuring optimal performance and longevity through precise maintenance and operation.

FAQ

Confirm the **recommended** diagnostic procedures for troubleshooting transmission issues? keyboard_arrow_down

10-12 MPa is the specified pressure for the transmission pump, crucial for diagnosing system faults.

What tools are required for **calibrated** fluid capacity requirements? keyboard_arrow_down

10.8 L is the specified capacity for the cooling system, requiring standard fluid handling tools.

Identify the **applicable** component identification for hydraulic system maintenance? keyboard_arrow_down

33 L is the specified hydraulic oil capacity for D20AG-7, D20P-7A, D20P-7A, and D20PG-7A models.

What procedures are documented for **exact** adjustment procedures? keyboard_arrow_down

15.2 MPa is the main relief valve's set pressure, essential for precise hydraulic system adjustments.

Determine the **specific** pressure specifications for the steering system? keyboard_arrow_down

0.10 MPa is the specified pressure for the hydraulic filter, a critical component for system cleanliness.

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Reviews (5)

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This manual has been a lifesaver for my repair shop. The detailed diagrams and step-by-step instructions make it easy to tackle any issue. Highly recommend!
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I reached out for support via email, and they responded in no time! The manual itself is very detailed and easy to follow. Great purchase!
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I had a smooth experience downloading the manual. The email with the download link arrived quickly, and the support team was really helpful when I had questions. Very satisfied!
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need to know how to fix oil from going from final drive side into steering clutch side
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Rated 5 out of 5 stars