This manual covers the Komatsu WA270-3 and WA270PT-3 series wheel loaders. These versatile machines are engineered for demanding applications, featuring articulated steering for enhanced maneuverability and a robust power shift transmission typically offering four forward and four reverse gears. Equipped with a Komatsu SA6D102E engine displacing 6.4 liters, these loaders are designed for reliability and efficient operation. Safety is paramount, with standard ROPS and optional FOPS providing protection in various work environments. The operating weight ranges from approximately 11,000 to 13,000 kg, depending on the specific configuration. This comprehensive English-language collection includes the Engine Shop Manual (102 series), a Service Training Manual, a general Shop Manual, and the Operation and Maintenance Manual for the WA270PT-3H. It provides essential information for owners, mechanics, and technicians, detailing maintenance procedures, troubleshooting guides, technical specifications, and critical safety guidelines. By referencing this manual, users can ensure the proper upkeep and efficient repair of their Komatsu WA270-3 / WA270PT-3 series wheel loaders, maximizing performance and longevity.