This workshop service repair manual covers the Volvo TAD1344GE Engine, an inline 6-cylinder diesel engine with a displacement of 12.8 liters. Featuring a water-cooled system, Electronic Unit Injector (EUI) fuel injection, and a forced lubrication system, this engine is engineered for robust performance and reliability in demanding applications. Its specifications include a bore of 130 mm, a stroke of 150 mm, and a compression ratio of 17.0:1. While specific rated power and maximum torque figures vary by application, the engine's design emphasizes durability and efficiency. This comprehensive English-language manual provides essential information for the maintenance, repair, and troubleshooting of the Volvo TAD1344GE Engine. It details engine specifications, lubrication requirements, and filter types, including oil, fuel, and air filters. The manual offers step-by-step procedures for engine overhaul, component-specific repairs such as cylinder head and piston/liner work, and diagnostic information for common issues. It also includes details on the Volvo EMS engine management system and provides electrical and diagnostic wiring diagrams, making it an indispensable resource for owners, mechanics, and technicians.