The Komatsu WA900L-3 Wheel Loader is a robust piece of heavy machinery designed for demanding operational environments. Featuring a powerful Komatsu SAA12V140E-2 engine, this model offers a net rated power of 300 kW (402 HP) and is equipped with a common rail injection system for efficient fuel delivery. Its substantial operating weight of approximately 64,900 kg and a rated bucket capacity of 10.0 m³ make it ideal for large-scale material handling tasks. The engineering quality of the WA900L-3 is evident in its durable construction and advanced systems, including a load-sensing hydraulic system and an electronically controlled powershift transmission, ensuring reliability and performance in challenging conditions. This Service Repair Manual provides comprehensive guidance for the Komatsu WA900L-3 Wheel Loader, serial numbers 52001 and up. Written in English, this extensive 831-page document covers all essential aspects of the machine's upkeep and repair. Key sections include detailed information on general operations, structure and function, testing and adjusting procedures, disassembly and assembly of components, maintenance standards, and technical specifications. Owners, mechanics, and technicians will find this manual an indispensable resource for ensuring the longevity, optimal performance, and safe operation of their WA900L-3.