This service repair manual covers the Komatsu WA470-5H and WA480-5H wheel loaders from the 5H Series. These machines are engineered for robust performance in demanding environments, featuring reliable diesel engines and hydrostatic transmissions for efficient power delivery. Their construction emphasizes durability and operational efficiency, making them suitable for a wide range of heavy-duty applications in construction, mining, and material handling. The serial number ranges for these models begin with WA470H50051 and up for the WA470-5H, and WA480H50051 and up for the WA480-5H. This comprehensive manual provides detailed information essential for maintaining and repairing your Komatsu wheel loader. It covers critical areas including safety procedures, general information, structure and function of components, testing and adjustment methods, disassembly and assembly instructions, and an appendix for reference. The scope of this manual is exhaustive, offering guidance from the front bumper to the rear of the machine. It is designed to assist owners, technicians, and mechanics in ensuring the optimal performance, longevity, and safe operation of their WA470-5H and WA480-5H equipment.