The Komatsu WA480-5 Wheel Loader represents a robust and reliable piece of heavy machinery, engineered for demanding operational environments. This model, part of the WA480-5 Series, is designed to deliver exceptional performance in a variety of applications, from construction and mining to material handling. Its construction emphasizes durability and efficiency, featuring a powerful Komatsu SAA6D125E-5 engine that is turbocharged and aftercooled, producing a net power of 224 kW (300 HP). The advanced Komatsu Advanced Transmission with Lock-up System (K-ATLAS) ensures smooth power delivery and optimized fuel efficiency. With an operating weight of approximately 25,500 kg and a standard bucket capacity of 4.2 m³, the WA480-5 is built for productivity and longevity. This Service Repair Workshop Manual provides comprehensive guidance for the operation, maintenance, service, repair, and troubleshooting of the Komatsu WA480-5 Wheel Loader. It is an essential resource for owners, operators, mechanics, and technicians, offering highly detailed information, including hundreds of pages, detailed photos, diagrams, and exploded views. The manual covers critical aspects such as engine specifications, transmission details, fluid capacities, and recommended service intervals for engine oil, hydraulic oil, and transmission oil, alongside a comprehensive lubrication schedule. By following the procedures outlined within this manual, users can ensure the optimal performance, safety, and extended service life of their WA480-5 machine.