This manual covers the Komatsu WA380-3H Series wheel loader, applicable to serial numbers WA380H20051 and up. Engineered for demanding operational environments, this model is recognized for its robust construction and reliable performance in various heavy-duty applications. Its design emphasizes efficiency and durability, making it a valuable asset for construction, mining, and material handling industries. The WA380-3H is equipped with a Powershift transmission, contributing to its operational versatility and power delivery. This comprehensive Shop, Engine, and O&M Manual provides essential information for the maintenance, repair, and operation of your Komatsu WA380-3H wheel loader. Within its 946 pages, you will find detailed procedures for disassembly and assembly, repair instructions, a troubleshooting guide, and a lubrication chart. The manual includes numerous diagrams, pictures, and illustrations to aid in understanding complex systems and components. It is designed to assist owners, technicians, and mechanics in ensuring the optimal performance and longevity of the equipment.