This comprehensive Komatsu D40A-3, D40P-3, D40PL-3, and D40PLL-3 Bulldozer Workshop Service Repair Manual provides detailed technical information and step-by-step instructions for maintaining and repairing these powerful machines. The manual covers a wide range of topics, including engine, transmission, hydraulics, undercarriage, electrical systems, and more. It provides detailed specifications, diagrams, and troubleshooting guides to assist technicians in diagnosing and resolving issues. This essential resource is designed to help mechanics and operators of Komatsu D40A-3, D40P-3, D40PL-3, and D40PLL-3 bulldozers perform maintenance and repairs efficiently and effectively. The manual is specifically tailored to machines with serial numbers 60001 and up.

The Komatsu D40A-3, D40P-3, D40PL-3, and D40PLL-3 bulldozers are powerful and versatile machines designed for heavy-duty earthmoving applications. These models are known for their reliability, durability, and efficiency, making them a popular choice for construction, mining, and forestry operations. The D40A-3 is the standard model, while the D40P-3 features a power-shift transmission for improved productivity. The D40PL-3 is equipped with a larger engine and a longer blade for increased capacity, and the D40PLL-3 boasts a powerful turbocharged engine and a longer blade for even greater performance. All models are equipped with a spacious operator's cab, offering excellent visibility and operator comfort. The Komatsu D40A-3 series bulldozers are powered by a robust diesel engine, delivering ample power for demanding tasks. They feature a planetary final drive system for reliable power transfer to the tracks. The bulldozers are equipped with a variety of blade options to suit different applications, including straight, semi-U, and U-blades. Their hydraulic system provides precise control of the blade and other attachments. The D40A-3 series bulldozers are also known for their advanced safety features, including a roll-over protective structure (ROPS) and a falling object protective structure (FOPS) to protect the operator in the event of an accident.