This manual covers the CNH NEF Tier III Diesel Engine, part of the NEF Series. Designed as a 4-stroke, 4-cylinder in-line diesel engine with a displacement of 4.5L, it features supercharging with an intercooler and adheres to Tier III emissions standards. The engine code prefix is F4CE. This engine is engineered for robust performance and reliability, suitable for various industrial and agricultural applications where dependable power is essential. This comprehensive Workshop Service Repair Manual, provided in English, details essential procedures for maintaining and repairing the CNH NEF Tier III Diesel Engine. It encompasses workshop service and repair procedures, offering guidance on engine specifications, lubrication, and service intervals. This manual serves as an indispensable resource for owners, technicians, and mechanics to ensure the optimal performance, longevity, and efficient operation of the engine.