This Service Repair Workshop Manual provides comprehensive information for the Komatsu WA270-3 and WA270PT-3 wheel loaders. These machines are engineered for demanding operational environments, offering robust performance and reliability. Their design prioritizes efficiency and durability, making them suitable for a wide range of construction and material handling applications. This manual is designed to assist owners, mechanics, and technicians in maintaining and repairing these specific Komatsu wheel loader models. It covers essential areas including safety procedures, general information, detailed explanations of structure and function, testing and adjustment protocols, disassembly and assembly instructions, and other critical technical data. Serial number coverage is provided for WA270H20051 and up for the WA270-3, and WA270H30051 and up for the WA270PT-3.