This manual covers the Volvo TAD1641GE, a powerful diesel engine designed for heavy-duty industrial and marine applications. Featuring an inline 6-cylinder configuration with a displacement of 16.1 liters, this engine is engineered for robust performance and reliability. Its advanced direct injection and high-pressure common rail fuel system, coupled with liquid cooling, ensure efficient operation. The TAD1641GE is built to meet demanding operational requirements, offering significant power and torque output suitable for generators, construction equipment, and other critical machinery. The purpose of this English-language Factory Service Repair Manual is to provide comprehensive guidance for the maintenance, repair, and servicing of the Volvo TAD1641GE engine. It details essential procedures, including engine identification, general precautions, disassembly and assembly instructions, maintenance checklists, and troubleshooting guides. Technical specifications, recommended lubricants, filter service, and tightening torques are also included. This manual serves as an indispensable resource for owners, technicians, and mechanics to ensure the optimal performance and longevity of the engine.