This workshop service repair manual covers the Komatsu WA430-5 wheel loader, a robust machine engineered for demanding operational environments. Equipped with a Komatsu SAA6D114E-2 diesel engine producing 235 HP, this model features a Komatsu Hydro-shift Transmission (HST) with 4 forward and 4 reverse gears, and a standard bucket capacity of 3.7 m³. Its substantial operating weight of 22,300 kg and dimensions designed for efficiency make it a reliable choice for heavy-duty material handling tasks. This comprehensive manual provides detailed service and repair information for the Komatsu WA430-5, serial numbers 60001 and up. It includes essential data on engine specifications, transmission systems, maintenance procedures for fluid capacities, and performance metrics. Owners, mechanics, and technicians will find detailed guidance on troubleshooting, technical specifications, and safety protocols, enabling effective maintenance and repair to ensure the longevity and optimal performance of the equipment.