This manual covers the Komatsu WA90-5 / WA100M-5, generation 5, produced from 2005 onwards. These machines are engineered for reliability and performance in demanding work environments. While specific features and intended usage are not detailed here, Komatsu equipment is known for its robust construction and operational efficiency, making it a trusted choice for various industrial and construction applications. This Service Repair Manual provides comprehensive coverage from front bumper to rear, offering detailed guidance for maintenance and repair. It includes high-quality diagrams and step-by-step instructions for a wide range of topics, such as safety, structure and function, testing and adjusting, disassembly and assembly, and other essential procedures. This manual is designed to assist owners, mechanics, and technicians in effectively maintaining and repairing their Komatsu WA90-5 / WA100M-5 equipment, ensuring optimal performance and longevity.