2003+ Komatsu S6D125-2, D65E-12, D75S-5, SA6D125-2, D85A-21, D85P-21, WA470-3, PC400-6 Diesel Engine Shop Manual

This comprehensive shop manual offers detailed repair procedures for Komatsu S6D125-2, D65E-12, D75S-5, SA6D125-2, D85A-21, D85P-21, WA470-3, and PC400-6 diesel engines. Ref: SEBM006410

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Komatsu 2003+ Komatsu S6D125-2, D65E-12, D75S-5, SA6D125-2, D85A-21, D85P-21, WA470-3, PC400-6 Diesel Engine Shop Manual manual page preview - page 1 of 399

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Komatsu 2003+ Komatsu S6D125-2, D65E-12, D75S-5, SA6D125-2, D85A-21, D85P-21, WA470-3, PC400-6 Diesel Engine Shop Manual manual preview page 1 - thumbnail
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Document Details

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Document Number / Seller:
30769 / Margaret Martinez
File Size:
36.89 MB
File Type:
PDF
Language:
Pages:
399
Printable:
Yes
Category:
Diesel Engine
Last updated / verified
Apr 11, 2025

Models Covered & Key Technical Specifications

Komatsu S6D125-2, D65E-12, D75S-5, SA6D125-2, D85A-21, D85P-21, WA470-3, PC400-6 (2003+) Diesel Engine Shop Manual This manual details service and repair for multiple Komatsu diesel engine models, providing essential technical information. | Engine Archive.

  • Design Category: Flywheel Horsepower: 131 kW (175 HP)/1,950 rpm establishes the primary performance metric.
  • Nominal Category: Production Rate: 799 Nm (81.5 kgm) at 1,100 rp signifies the maximum torque output.
  • Calibrated Category: For Engine Operation, 1104 cc (11.04 liters) defines the total piston displacement.
  • Documented Category: The cylinders require 6 units for standard engine configuration.
  • Principal Category: Operating Temperature: 1,300 rpm defines the target engine speed for peak torque.
  • Key Category: Engine Dimensions: 1,305 mm in overall length sets the primary spatial constraint.

Manual Description & Preview

Komatsu Diesel Engine Service Manual: S6D125-2, D65E-12, D75S-5, SA6D125-2, D85A-21, D85P-21, WA470-3, PC400-6 - Comprehensive Repair & Maintenance Reference

Engine Model: 6D125-2, S6D125-2, SA6D125-2 // System Type: Diesel Engine Logic // Spec Summary: Performance-Values.

Identifier Operational-Logic Calibration-Spec
Cylinder Count 6 6-125 x 150
Piston Displacement 11.04 (11,040) cc 1 - 5 - 3 - 6 - 2 - 4
Overall Length 1,305 mm 1,305 mm
Max Torque 799 Nm (81.5 kgm) at 1,100 rpm 981 Nm (100 kgm) at 1,200 rpm
Max Horsepower 131 kW (175 HP) at 1,950 rpm 140 kW (188 HP) at 1,950 rpm

Repair data is categorized into:

General Structure

This section covers the overall engine layout and component identification.

Lubrication System

Detailed schematics and procedures for the oil circulation system are provided.

Fuel System

Information on fuel injection timing, pump calibration, and system checks is included.

Cooling System

Components and charts for the engine's cooling system are documented.

Electrical System

Details on alternators, starting motors, and wiring diagrams are presented.

System operation descriptions cover the various engine subsystems and their functions. The documentation addresses the complete range of maintenance and repair tasks. Assembly instructions are detailed for all major components. Hydraulic schematics are included for related systems. Steering component information is provided where applicable. This manual documents torque specifications for engine components to ensure proper corrosion joint prevention.

FAQ

Does this shop manual for the Komatsu 125-2 series come in an instantly downloadable PDF format? keyboard_arrow_down

Document is available as an instant digital download in PDF format and is accessible on various devices. The file covers the 2003 and later engine models across 399 pages.

What kind of tightening specifications and reference charts are included in the manual? keyboard_arrow_down

Foreword sections contain comprehensive standard tightening torque tables for metric bolts, nuts, flared nuts, split flange bolts, and O-ring boss piping joints.

Which fluid and coating material specifications are documented in the shop manual? keyboard_arrow_down

Manual includes a coating materials section that lists Komatsu-recommended adhesives, gasket sealants, and lubricants. These tables provide information on part numbers, container types, and typical applications such as thread sealing and gasket fitting. It also covers guidelines for using these products during engine component operations.

Can I find the chapter structure for the S6D125-2 engine shop manual in this download? keyboard_arrow_down

Manual is organized into chapters covering General information, Structure and Function, Testing and Adjusting, Disassembly and Assembly, and Maintenance Standards.

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