This comprehensive Operation & Maintenance Manual provides detailed instructions and technical specifications for the Komatsu D31E-20, D31P-20, D31PL-20, D31PLL-20, D31P-20A, D37E-5, and D37P-5A Bulldozers. The manual covers all aspects of operation and maintenance, ensuring safe and efficient use of these powerful machines. It includes detailed information on:

* **General Machine Specifications:** Engine specifications, hydraulic system description, operating weights, and dimensions.
* **Operation:** Safe operation procedures, starting and stopping the engine, operating the bulldozer in various conditions, and troubleshooting common problems.
* **Maintenance:** Routine maintenance schedules, lubrication procedures, filter replacements, engine maintenance, and hydraulic system checks.
* **Troubleshooting:** Diagnosis and repair of common problems, identifying fault codes, and using the troubleshooting flowcharts.
* **Parts Identification:** Detailed diagrams and descriptions of all components and parts, including exploded views for easy identification.
* **Safety:** Emphasis on safety precautions, operator training, and proper use of safety equipment.

This manual is a valuable resource for anyone operating or maintaining these Komatsu bulldozers, providing the knowledge and guidance needed to ensure optimal performance and longevity. It covers all serial numbers starting with 42199 and up for the D31E-20, 45001 and up for the D31P, PL, PLL-20, 3235 and up for the D31P-20A, and 3153 and up for the D37E-5 and D37P-5A.

The Komatsu D31E-20, D31P-20, D31PL-20, D31PLL-20, D31P-20A, D37E-5, and D37P-5A bulldozers are powerful and versatile machines designed for a wide range of earthmoving tasks. These bulldozers are known for their robust construction, exceptional performance, and operator comfort. The D31 series features a powerful Komatsu SAA6D107E-2 engine, delivering high torque and superior pushing power. They boast a durable undercarriage with heavy-duty tracks and rollers, ensuring long-lasting performance even in demanding conditions. The D37E-5 and D37P-5A models are equipped with the SAA6D140E-3 engine, providing even greater power and efficiency. Both the D31 and D37 series feature a spacious and ergonomic operator's cab, designed with safety and comfort in mind. The well-designed controls and intuitive layout enhance operator productivity and reduce fatigue. The bulldozers are equipped with advanced hydraulic systems, providing smooth and precise blade and implement control, making them suitable for various applications including grading, site preparation, and material handling.

The Komatsu D31 and D37 bulldozers offer several options for blade and implement configurations to meet specific job requirements. These options include a variety of blade sizes and styles, as well as rippers and other attachments. This versatility enables the machines to tackle a wide range of earthmoving challenges, from large-scale construction projects to smaller site preparation tasks. These bulldozers are also known for their reliability and durability, backed by Komatsu's global service and support network. This network provides access to genuine parts, skilled technicians, and comprehensive training resources, ensuring that the machines operate at peak performance throughout their lifespan. By balancing power, efficiency, and operator comfort, these Komatsu bulldozers are valuable assets for any earthmoving operation. Whether it's challenging terrain or demanding work cycles, these machines are built to perform and deliver exceptional results.