This Service Repair Manual covers the Komatsu WA470-5H and WA480-5H wheel loaders, part of the -5H Series. These machines are engineered for demanding operational environments, offering robust performance and reliability. While specific production years are not detailed, this manual pertains to a range of serial numbers within this series, ensuring comprehensive support for these powerful construction vehicles. This manual provides extensive technical information essential for the maintenance and repair of your Komatsu equipment. It includes detailed procedures for disassembly and assembly, general troubleshooting, and specific troubleshooting guides for the engine (ENG MODE), transmission (TM MODE), work equipment (WORK MODE), monitor system (MON MODE), hydraulic/mechanical systems (H MODE), and electrical systems (E MODE). Additionally, it covers maintenance standards, servicing procedures, technical maintenance, and appendices with supplementary information, all presented in English for clarity and ease of use.