This workshop service repair manual covers the Komatsu WA470-5H and WA480-5H Wheel Loaders, serial numbers WA470H50051 and up, and WA480H50051 and up. These robust machines are engineered for demanding operational environments, offering reliability and performance in various industrial and construction applications. Their design prioritizes durability and efficiency, making them a cornerstone for heavy-duty material handling tasks. This comprehensive manual is designed to assist owners, mechanics, and technicians in maintaining and repairing these wheel loaders. It provides detailed information across key areas including safety procedures, general operational overviews, structure and function explanations, testing and adjustment guidelines, disassembly and assembly instructions, and an appendix for supplementary data. This resource ensures that the Komatsu WA470-5H and WA480-5H can be kept in optimal working condition.