This workshop service repair manual covers New Holland CNH Engines, specifically the Tier 4 generation. These diesel engines, featuring 4 to 6 cylinders, are engineered for robust performance and reliability. While specific production years are not detailed, the manual addresses models such as F4HFE6131, F4HFE613G, and F4HFE613H, providing comprehensive technical data essential for understanding and maintaining these powerful units. This manual serves as an authoritative guide for all aspects of CNH Engine maintenance and repair. It includes detailed procedures for engine maintenance, troubleshooting, fuel system operations, cooling and lubrication systems, as well as transmission, chassis, body, electrical systems, suspension, steering, brakes, and HVAC. With extensive coverage, including wiring diagrams, technical specifications, and safety guidelines, this resource is indispensable for owners, mechanics, and technicians seeking to ensure optimal performance and longevity of their New Holland engines.