This document provides comprehensive technical information for the Komatsu WA450-3MC Wheel Loader Material Handler, serial numbers A35001 and up. Engineered for demanding operational environments, this machine embodies Komatsu's commitment to robust construction and reliable performance. Its design prioritizes efficiency and durability, making it a valuable asset for material handling tasks across various industries. This Workshop Repair Service Manual is meticulously compiled to assist mechanical technicians in maintaining and repairing the WA450-3MC. It covers essential procedures for repair and overhaul, including detailed diagnostics, tune-ups, removal and installation of components, assemblies and disassemblies, and engine and transmission overhauls. The manual emphasizes product-specific procedures, safety protocols, and the use of diagnostic tools, ensuring that technicians can effectively service the equipment.