This Service Shop Repair Manual covers the Komatsu WA380-5L Wheel Loader, serial numbers A52001 and up. Engineered for demanding applications, this machine features a robust Komatsu SAA6D114E-3 engine producing 165 kW (221 hp) of net power, coupled with a Komatsu Hydrostatic Transmission (HST) offering variable speed control and an inching function. Its design prioritizes reliability and operational efficiency, incorporating heavy-duty planetary type axles, a Komatsu variable displacement piston pump for the hydraulic system, and a high-efficiency radiator. The WA380-5L is built to perform in various work environments, supported by its substantial operating weight of 22400 kg and overall dimensions optimized for productivity. This comprehensive 1216-page manual in English provides essential information for maintaining and repairing the Komatsu WA380-5L. It details preventative maintenance schedules, fluid capacities, and service intervals, alongside in-depth troubleshooting procedures, removal and installation instructions, and testing and adjustment guidelines. The manual includes detailed illustrations, exploded diagrams, drawings, photos, electrical diagrams, and hydraulic circuit diagrams to aid in understanding complex systems. Its structured format, with fully bookmarked chapters, ensures efficient navigation for owners, mechanics, and technicians seeking to ensure the longevity and optimal performance of their equipment.