This comprehensive Komatsu D37EX-21 and D37PX-21 Bulldozer Workshop Service Repair Manual provides detailed technical information and repair procedures for these powerful machines. It covers models with serial numbers 5501 and up, ensuring you have the most up-to-date information for maintenance and troubleshooting. The manual includes detailed diagrams, illustrations, and step-by-step instructions, making it easy to understand and follow even the most complex repair procedures. With this manual, you'll have access to a wealth of information about your Komatsu bulldozer, including its engine, transmission, hydraulics, electrical system, and more. This valuable resource will help you keep your bulldozer running smoothly and efficiently, saving you time and money in the long run.

The Komatsu D37EX-21 and D37PX-21 bulldozers are powerful and versatile machines designed for heavy-duty earthmoving operations. These crawler tractors boast robust construction, powerful engines, and advanced hydraulic systems, making them ideal for a wide range of applications, including large-scale construction projects, mining, and land clearing. The D37EX-21 is equipped with a powerful Komatsu SAA6D140E-3 engine, generating 310 horsepower (231 kW), while the D37PX-21 features an even more potent Komatsu SAA6D170E-3 engine, producing 360 horsepower (268 kW). Both models offer ample power for demanding tasks while maintaining efficiency and fuel economy. They feature a hydrostatic transmission system that provides smooth and responsive operation with effortless gear changes, enhancing productivity and operator comfort. The D37EX-21 and D37PX-21 bulldozers are renowned for their durability and reliability, built to withstand the harshest working conditions. The heavy-duty undercarriage, featuring durable steel tracks and robust components, ensures long service life and minimal downtime. These models are designed with operator comfort and safety in mind, featuring a spacious and ergonomically designed cab with excellent visibility and intuitive controls. The advanced hydraulic system ensures precise blade control and optimal pushing performance for accurate and efficient earthmoving operations. Komatsu's commitment to safety is evident in features like the ROPS (Rollover Protective Structure) and FOPS (Falling Object Protective Structure) cab design, providing maximum protection for the operator. The D37EX-21 and D37PX-21 bulldozers are robust and reliable machines that deliver exceptional performance and productivity, making them an essential tool for demanding construction and earthmoving projects.