The Komatsu WA380-3 Avance is a robust wheel loader designed for demanding operational environments. Featuring a powerful Komatsu S6D108E-1 diesel engine, this model delivers substantial gross power of 170 HP, supported by a reliable Komatsu Countershaft-type, Planetary gear, power shift transmission with four forward and four reverse gears. Its substantial operating weight of 20800 kg and a standard bucket capacity of 3.0 m³ make it well-suited for heavy-duty tasks in construction, mining, and material handling. The WA380-3 Series, with serial numbers starting from WA380-3: 50001 and up, and WA380-3H: WA380H20051 and up, represents Komatsu's commitment to engineering excellence and operational efficiency. This Service Repair Workshop Manual in English provides comprehensive information for the maintenance and repair of the Komatsu WA380-3 Avance. It covers essential areas including detailed maintenance procedures, troubleshooting guides, technical specifications, and safety guidelines. The manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance, longevity, and safety of their WA380-3 Series equipment. With complete service and repair information, this manual empowers users to perform necessary upkeep and address potential issues effectively.