This manual pertains to the Mitsubishi D04FD-TAA Diesel Engine, a robust component within the D04F Series. This turbocharged and intercooled, four-cylinder engine offers approximately 3.3 liters of displacement and is engineered for reliable performance across various applications, typically delivering between 80-120 HP and 200-300 Nm of torque. Its design emphasizes durability and efficiency, making it a dependable choice for demanding operational environments. This comprehensive Service Repair Manual provides essential information for the maintenance, diagnosis, and repair of the Mitsubishi D04FD-TAA Diesel Engine. It covers detailed diagnostic procedures, troubleshooting charts for common issues, and guidance on routine servicing, including oil and coolant recommendations, capacities, and recommended service intervals for filters. This manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance and longevity of this engine.