This manual covers the Volvo TAD1631GE, a robust diesel engine designed for demanding applications. Featuring a 16.1-liter displacement, inline 6-cylinder configuration, and a powerful common rail injection system, this engine delivers 510 horsepower and 2323 Nm of torque at 1800 RPM. Its water-cooled system ensures reliable operation under continuous load. The TAD1631GE is engineered for durability and performance, making it a dependable choice for various industrial and heavy-duty uses. The purpose of this workshop service manual is to provide comprehensive guidance for the repair and maintenance of the Volvo TAD1631GE engine. It details essential procedures, including lubrication with a 45-liter oil capacity and recommended service intervals of 500 hours, as well as information on oil, fuel, and air filters. This document serves as an indispensable resource for owners, technicians, and mechanics, enabling them to perform accurate diagnostics, effective repairs, and routine upkeep to ensure the longevity and optimal performance of the engine.