The Komatsu WA320-3 and WA320-3H Avance series wheel loaders represent robust engineering designed for demanding operational environments. These machines are powered by a Komatsu S6D108-1 diesel engine, delivering 145 HP and 450 lb-ft of torque, coupled with a 4-speed forward and 4-speed reverse Komatsu Dynamic Steering Powershift transmission. With an operating weight of 17,300 kg and a bucket capacity ranging from 2.0 to 3.2 m³, these loaders are engineered for reliability and efficiency in material handling and construction applications. Notable features include a ROPS/FOPS certified cabin for operator safety and impressive performance metrics such as a breakout force of 126 kN and a maximum speed of 38 km/h. This comprehensive Service Repair Workshop Manual, written in English, provides essential information for the maintenance and repair of the Komatsu WA320-3 and WA320-3H wheel loaders. Covering over 800 pages, it details critical procedures, technical specifications, and troubleshooting guidance. Owners, technicians, and mechanics will find in-depth instructions on engine service, hydraulic systems, transmission maintenance, and fluid capacities, alongside recommended service schedules. The manual is designed to ensure the optimal performance, longevity, and safety of your equipment, offering detailed insights for effective upkeep and repair.