The Komatsu D31EX-21 (FOR NORTH AMERICAN) Bulldozer Parts Catalogue Manual covers a wide range of components and systems for this specific model, designed for North American markets. With a comprehensive approach, the manual delves into detailed information about each part, making it an invaluable resource for maintenance, repair, and troubleshooting. Starting with the engine, the manual covers the SAA4D102E-2B-4 engine with serial numbers 26277757 and higher. It provides a detailed breakdown of engine-related parts, including the cooling system, fuel tank and related components, and the electrical system. Moving beyond the engine, the manual explores the powertrain and final drive, offering in-depth information on these crucial systems. It also provides comprehensive details on the hydraulic system, a vital aspect of the bulldozer's operation. The manual goes on to cover the main frame and related parts, encompassing the structural integrity of the machine. It further includes information on the operator's compartment, control systems, guards, undercarriage, work equipment, marks and plates, accessories, miscellaneous parts, service kits, and component parts. This Parts Catalogue Manual is a comprehensive guide, offering a wealth of knowledge and practical information for anyone involved in the maintenance and repair of the Komatsu D31EX-21 (FOR NORTH AMERICAN) bulldozer.

The Komatsu D31EX-21 is a formidable crawler bulldozer designed specifically for the North American market. This machine boasts an impressive combination of power, durability, and operator comfort, making it ideal for a wide range of demanding applications. Powered by a robust Komatsu SAA6D107E-1 engine, the D31EX-21 delivers a remarkable 175 horsepower, enabling it to tackle tough terrain and challenging tasks with ease. The bulldozer is equipped with a heavy-duty undercarriage that incorporates durable components for long-lasting performance, even in the harshest conditions. This includes a robust track frame, high-strength track links, and durable rollers, ensuring superior traction, stability, and longevity. Beyond its raw power and rugged construction, the Komatsu D31EX-21 prioritizes operator comfort and productivity. The spacious cab provides ample legroom and features a comfortable, ergonomic seat designed to minimize operator fatigue during extended work hours. The D31EX-21 also comes with a comprehensive suite of operator controls, including a multifunction joystick for precise blade operation. The advanced hydraulic system delivers responsive control and efficient power transfer, allowing the operator to maximize productivity. The D31EX-21 is designed with safety as a paramount concern, featuring a robust ROPS/FOPS-compliant cab structure for the protection of the operator. Additionally, the machine incorporates a comprehensive range of safety features, including an audible back-up alarm, a comprehensive lighting system, and a comprehensive safety checklist to ensure a secure and productive work environment.