This Service Repair Workshop Manual covers the Volvo Penta TAMD63L-A and TAMD63P-A marine diesel engines. These internal combustion engines, part of the TAMD63 family, feature an inline 6-cylinder configuration and are known for their robust engineering and reliability in demanding marine applications. While specific production years are not detailed, this manual focuses on providing comprehensive information for maintaining and repairing these powerful engines. This manual serves as an essential guide for owners, mechanics, and technicians. It includes detailed step-by-step repair procedures, troubleshooting guidance, and technical specifications for various engine systems, including fuel, lubrication, cooling, and electrical. With hundreds of pages of diagrams, detailed illustrations, drawings, photos, and enlarged insets, this manual facilitates a thorough understanding of engine components, disassembly, assembly, cleaning, and reinstallation. It also provides crucial notes, cautions, warnings, and information on special tools required for effective service.