This comprehensive Komatsu D21P-5, D21A-5, and D21PL-5 Bulldozer Workshop Service Repair Manual is your essential resource for maintaining and repairing these powerful machines. It covers a wide range of topics, including detailed specifications, troubleshooting procedures, component diagrams, and step-by-step instructions for every repair and maintenance task. With this manual, you'll have the knowledge and information you need to keep your Komatsu bulldozer operating at peak performance. This manual applies to the following Komatsu bulldozer models and serial numbers: Komatsu D21A-5: Serial number 45001 and up; Komatsu D21PL-5: Serial number 45001 and up; Komatsu D21P-5: Serial number 45003 and up.

The Komatsu D21P-5, D21A-5, and D21PL-5 are powerful and versatile bulldozers designed for demanding construction and earthmoving applications. These crawler-type bulldozers are equipped with a robust and reliable Komatsu engine, offering exceptional power and fuel efficiency. The D21P-5 and D21A-5 models are standard-sized bulldozers, while the D21PL-5 is a larger, long-track version designed for increased stability and traction in challenging terrain. These bulldozers feature an advanced hydrostatic transmission system, providing smooth and responsive control for precise maneuvering and efficient operation. Furthermore, they are equipped with a durable undercarriage, heavy-duty tracks, and a well-designed blade, enabling them to tackle a wide range of tasks, such as clearing land, grading, excavating, and moving large quantities of material. The D21P-5, D21A-5, and D21PL-5 bulldozers excel in various applications, including road construction, site preparation, mining, and forestry. Their compact size and maneuverability make them suitable for working in confined spaces, while their powerful engine and strong undercarriage allow them to handle heavy-duty operations. The D21P-5 and D21A-5 models are ideal for general construction projects, while the D21PL-5 is well-suited for large-scale projects, such as clearing vast areas and moving significant volumes of earth. The Komatsu D21P-5, D21A-5, and D21PL-5 bulldozers are known for their high performance, reliability, and operator comfort, making them a popular choice among construction professionals.