This manual covers the Volvo TAD1344GE, an inline 6-cylinder diesel engine designed for robust performance and reliability. Featuring a 12.8-liter displacement, common rail injection, and a variable geometry turbocharger, this engine delivers significant power, with outputs up to 300 kW (402 hp) and 1800 Nm of torque, depending on its application. Its water-cooled system and Tier 3 / Stage IIIa emission standards ensure efficient operation. Built with Volvo's renowned engineering quality, the TAD1344GE is engineered for demanding industrial and power generation uses where dependable power is critical. The purpose of this Factory Service Repair Manual is to provide comprehensive guidance for the maintenance, repair, and technical understanding of the Volvo TAD1344GE engine. It details essential information including lubrication, cooling system capacities, and general specifications. This manual is an indispensable resource for owners, mechanics, and technicians, offering the necessary procedures and technical data to ensure the engine's optimal performance, longevity, and safe operation throughout its service life.