This Workshop Service Repair Manual covers the Komatsu WA380-6H Wheel Loader, serial number H65001 and up. Engineered for demanding construction and material handling applications, this heavy equipment model is powered by an internal combustion diesel engine and features a four-wheel-drive system for optimal traction and performance. Its robust design and operator-controlled operation are hallmarks of Komatsu's commitment to reliability and efficiency in heavy machinery. This comprehensive manual provides detailed guidance for service and repair. It includes essential information on specifications, structure, function, maintenance standards, standard value tables, testing and adjusting procedures, troubleshooting, and disassembly and assembly. Detailed diagrams and drawings are also included to aid in understanding and executing maintenance tasks. This resource is designed to assist owners, mechanics, and technicians in effectively maintaining and repairing the WA380-6H Wheel Loader.