This Service Repair Manual covers Komatsu WA90-5 and WA100M-5 Wheel Loaders, serial numbers 50051 and up. These machines are engineered for demanding work environments, offering robust performance and reliability. Their design prioritizes efficiency and durability, making them a trusted choice for various construction and material handling applications. This manual provides comprehensive information to ensure these vital pieces of equipment operate at peak performance. The purpose of this English-language manual is to guide owners and technicians through the maintenance and repair processes for these Komatsu Wheel Loaders. It details essential procedures, including safety precautions, general information, structure and function explanations, testing and adjusting methods, and disassembly and assembly instructions. With step-by-step guidance, high-resolution diagrams, and clear instructions, this resource is designed to simplify repair jobs and ensure the longevity and optimal functioning of your equipment.