This comprehensive Komatsu D85A-21, D85E-21, D85P-21 Bulldozer Service Repair Manual provides in-depth information on maintaining, assembling, disassembling, and servicing your Komatsu D85A-21, D85E-21, D85P-21 Bulldozer. This manual covers models with serial numbers D85A-21 - 35001 and up, D85E-21 - 35001 and up, and D85P-21 - 3001 and up.

It includes detailed information on the S6D125-1 and S6D125-2 engines, which are featured in these models. You can find specific engine details in the 6D125 Series and 125-2 Series Engine Shop Manual.

The manual features a wide range of specifications, diagrams, real photo illustrations, and schematic diagrams, to provide complete step-by-step instructions for repair, diagnostics, servicing, technical maintenance, and troubleshooting procedures for your machine. This manual gives you all the necessary information to identify problems and understand how to repair and maintain your Komatsu bulldozer, allowing you to perform repairs yourself and save money.

The Service Repair Manual contains detailed information on various components of the bulldozer, including:

* **General:** Specification drawing, specifications, weight table, table of fuel, coolant and lubricants
* **Engine:** Testing and adjusting, disassembly and assembly
* **Power Train:** Structure and function, testing and adjusting, disassembly and assembly, maintenance standard
* **Undercarriage:** Structure and function, disassembly and assembly, maintenance standard
* **Hydraulic System:** Structure and function, testing and adjusting, disassembly and assembly, maintenance standard
* **Work Equipment:** Disassembly and assembly, maintenance standard
* **Electrical System:** Structure and function, testing and adjusting
* **Others:** Structure and function, disassembly and assembly

This manual is 100% complete and intact, ensuring you have all the necessary information at your fingertips. It is organized and easy to navigate with bookmarks and a search function. You can easily find the information you need quickly.

## The Komatsu D85A-21, D85E-21, and D85P-21 Bulldozers: Workhorses of Construction and Mining

The Komatsu D85A-21, D85E-21, and D85P-21 bulldozers are powerful and reliable heavy-duty machines designed for demanding applications in construction, mining, and other industries. These models represent the evolution of the D85 series, known for their robust build, exceptional maneuverability, and high productivity. The D85A-21, powered by a 12-cylinder Komatsu SAA6D170E-2 engine, delivers 410 horsepower and 1,534 lb-ft of torque, making it suitable for heavy-duty tasks like pushing large amounts of earth, grading, and site preparation. The D85E-21, with its 12-cylinder Komatsu SAA6D170E-2 engine, boasts a powerful 460 horsepower and 1,710 lb-ft of torque, enhancing its capabilities for tackling even more demanding tasks. The D85P-21, designed specifically for mining applications, features a 12-cylinder Komatsu SAA6D170E-2 engine and delivers an impressive 510 horsepower and 1,890 lb-ft of torque, making it ideal for high-volume excavation and material handling in harsh environments.

All three models feature a robust drivetrain with an electronically controlled hydrostatic transmission, providing smooth and efficient power delivery while ensuring precise control. The hydraulic system is meticulously engineered for superior performance and reliability, allowing the machines to operate with exceptional power and precision. The operator cab is designed for comfort and visibility, featuring a spacious ergonomic layout, adjustable seats, and a comprehensive instrument panel. These bulldozers are equipped with advanced safety features like a rollover protection structure (ROPS) and a falling object protection structure (FOPS), ensuring the operator's safety in challenging work environments. Their versatility and efficiency make them indispensable tools for a wide range of projects, from clearing land and building roads to mining operations and large-scale infrastructure development.