Komatsu D61EX-12, D61PX-12 Bulldozer Shop Manual

Technical Scope of the Komatsu D61EX-12 and D61PX-12 Workshop Manual

• Covers 2002 Komatsu D61EX-12 and D61PX-12 bulldozers, documenting systems for both 1001+ and B1001+ serial number ranges
• Official Komatsu publication P/N SEBM018904, printed December 2002
• Contains 47 illustrations and diagrams detailing internal components, power train layouts, and hydraulic schematics
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• Re-download the file any time, no expiration
• Full-text search finds any part number in seconds
• Laid out for standard letter and A4 printing
• This 2002 edition serves as the primary technical reference for the 12-series platform, including detailed specifications for S6D114E-1A and SA6D114E-2 engine variants

Component and System Overview

This manual provides a detailed look at the internal mechanical and hydraulic structures of the Komatsu D61EX-12 and D61PX-12 bulldozer models. The document organizes technical data into specific volumes to ensure clarity, covering the chassis, engine, and hydraulic attachments. It details the function and arrangement of components including the power train system, steering and brake controls, and work equipment hydraulics. Readers will find in-depth descriptions of the planetary transmission gear mechanism, the function of the modulating valve during gear shifting, and the operation of the HSS steering unit. It further documents the setup of the main relief valve, oil cooling circuits, and the undercarriage track frame arrangement.

Technical Reference and Specification Data

Technical information provided includes torque specifications for metric bolts, flared nuts, and split flange bolts, along with comprehensive tables for coating materials, adhesives, and sealants. Performance values such as track gauge, operating weight, and ground pressure are documented for the various configurations of the D61EX-12 and D61PX-12. The manual lists fluid capacities for the engine oil pan, power train case, and hydraulic system under various ambient temperatures. Engine oil viscosity requirements and lubrication intervals are documented based on fuel sulfur content. Reference what factory workshop documentation is structured to understand correctly interpret the provided circuit diagrams and pressure detection port locations.

Note: This document provides technical specifications and operational theory for reference only; qualified technicians remain the authoritative source for performing hands-on work. This 108-page official Komatsu OEM shop manual covers the 2002 D61EX-12 and D61PX-12 bulldozer models, documenting engine, drivetrain, hydraulic, and structural specifications for the 1001 through B3000 series build.