This Service Repair Manual covers the Komatsu WA270-3 and WA270PT-3 Wheel Loaders, specifically for serial numbers WA270H20051 and up, and WA270H30051 and up. These robust machines are engineered for demanding operational environments, offering reliable performance and durability. The manual is designed to provide comprehensive information for maintaining these wheel loaders, ensuring they continue to operate at peak efficiency. This manual serves as an essential resource for owners, mechanics, and technicians. It details critical maintenance procedures, troubleshooting guidance, technical specifications, and safety protocols necessary for the upkeep and repair of the WA270-3 and WA270PT-3 models. With easy-to-follow, step-by-step instructions and high-quality diagrams, this English language manual facilitates efficient and cost-effective vehicle maintenance.