This Shop Manual covers the Komatsu WA380-3 Wheel Loader, serial number WA380H20051 and up. Designed for demanding operational environments, this robust machine exemplifies Komatsu's commitment to engineering excellence and reliability. Its advanced design and powerful diesel engine ensure efficient performance across a wide range of applications. This manual provides comprehensive information to understand, operate, and maintain this vital piece of equipment. This Factory Service Manual is an indispensable resource for owners, technicians, and mechanics. It details repair and overhaul procedures with step-by-step instructions, fault-finding guidance, and explanations of component functions. The manual includes all necessary technical specifications, tolerances, and accurate, verified research to ensure precise maintenance and repair. With top-quality diagrams, illustrations, and easy-to-read text, this 946-page guide is designed to save time and prevent errors, facilitating optimal equipment performance and longevity.