The Volvo Penta TAMD63L-A and TAMD63P-A are robust marine diesel engines designed for demanding maritime applications. These inline 6-cylinder engines feature a displacement of 6.7 liters and utilize turbocharged and intercooled aspiration for efficient performance. The TAMD63L-A offers an approximate power output of 232 kW (311 hp) at 2300 RPM, while the TAMD63P-A provides 254 kW (341 hp) at 2300 RPM. Engineered for reliability and durability, these engines are equipped with direct injection fuel systems and indirect cooling via a seawater-cooled heat exchanger, ensuring consistent operation in challenging marine environments. This comprehensive Service Repair Manual provides essential information for the maintenance, repair, and troubleshooting of the Volvo Penta TAMD63L-A and TAMD63P-A marine diesel engines. It covers critical systems including the engine block, lubricating system, fuel system, cooling system, electrical system, and reverse gear. Detailed procedures for routine maintenance, such as oil changes and filter replacements, are included, along with guidance on specific oil types and capacities. The manual also details the use of special tools and offers technical specifications to assist owners, mechanics, and technicians in ensuring optimal performance and longevity of their engines.