The Komatsu WA270-3 and WA270PT-3, specifically for serial numbers 20051 and onwards, represent the robust 3 Series of wheel loaders. These machines are engineered with a powerful Komatsu SAA6D102E-2 Diesel Engine, delivering 130 HP and featuring Tier 2 / Stage II emission controls. Equipped with a Komatsu Advanced Transmission with Lock-up, offering 4 speeds forward and 4 reverse with auto-shift, and a rated bucket capacity of approximately 2.0 - 2.5 m³, these loaders are designed for demanding operational environments. Their substantial operating weight of around 11,800 kg and dimensions, including a length of approximately 6,690 mm and width of 2,500 mm, underscore their capability in construction, material handling, and other heavy-duty applications. This comprehensive English-language Service Workshop Repair Manual provides essential information for the maintenance and repair of your Komatsu WA270-3 / WA270PT-3 wheel loader. It covers critical areas such as detailed engine specifications, transmission operation, fluid capacities, and operational data. The manual guides users through maintenance schedules and procedures, ensuring optimal performance and longevity of the machine. Whether you are an owner, a professional mechanic, or a technician, this digital, menu-driven resource is designed to assist in all aspects of vehicle upkeep, troubleshooting, and technical understanding, enabling efficient and effective service.