This comprehensive Komatsu D39EX-21, D39PX-21 Bulldozer Service Repair Manual provides in-depth information for maintaining, assembling, disassembling, and servicing your Komatsu D39EX-21, D39PX-21 Bulldozer. This manual covers models with serial numbers 1001 and up. It includes detailed information about the SAA4D102E-2 engine, which is featured in both the D39EX-21 and D39PX-21 models. The manual is organized into sections that cover various aspects of your bulldozer, including its structure and function, maintenance standards, testing and adjusting procedures, disassembly and assembly instructions, and additional resources. You'll find clear and detailed diagrams, real photo illustrations, schematics, and step-by-step instructions for diagnosing problems, performing repairs, and carrying out routine maintenance tasks. This manual is your ultimate guide to understanding and maintaining your Komatsu bulldozer, enabling you to identify issues, perform repairs, and ensure optimal machine performance.

The Komatsu D39EX-21 and D39PX-21 bulldozers are powerful and versatile machines designed for heavy-duty earthmoving applications. These models are renowned for their robust construction, advanced hydraulic systems, and exceptional performance. The D39EX-21 is equipped with a powerful Komatsu SAA6D140E-3 engine, delivering 320 horsepower (239 kW) to handle demanding tasks. It features a durable undercarriage with durable track links and guide rollers, ensuring long-lasting performance in challenging conditions. The D39PX-21 shares similar characteristics but features a slightly different blade design and other minor variations tailored to specific needs. Both models boast a spacious and ergonomic operator cab with excellent visibility, providing a comfortable and safe working environment. For owners and operators seeking comprehensive repair and maintenance information, the Komatsu D39EX-21 D39PX-21 Bulldozer Service Repair Manual (Serial Number: 1001 and up) is an essential resource. This manual provides detailed instructions, diagrams, and troubleshooting guides for all aspects of the bulldozers, from engine and transmission to hydraulic systems, electrical components, and undercarriage. It covers routine maintenance procedures, as well as advanced repair techniques, ensuring efficient and accurate troubleshooting and repair. The manual is organized logically, with clear indexing and cross-referencing, making it easy to find the information needed quickly and efficiently. Whether it's servicing a hydraulic pump, diagnosing electrical issues, or replacing a worn track shoe, the Komatsu D39EX-21 D39PX-21 Bulldozer Service Repair Manual is an indispensable tool for maintaining and extending the lifespan of these high-performance bulldozers.