This workshop service repair manual provides comprehensive guidance for the Iveco N60 ENT M37 NEF engine, an internal combustion engine designed for repair and overhaul. The NEF engine family, specifically the N60 ENT M37 model, represents a significant engineering achievement focused on reliability and performance. This manual is an essential resource for anyone involved with this engine, ensuring its continued optimal operation. The scope of this English-language manual is extensive, covering routine maintenance, servicing, diagnostic and repair procedures, tune-ups, and disassembly/reassembly of various engine systems including fuel, ignition, lubrication, exhaust, electrical, and transmission. It emphasizes the critical use of safety equipment and special tools, referencing specific Iveco part numbers for clarity. The manual is structured to assist technicians who are already familiar with general automotive practices in effectively maintaining and repairing the Iveco N60 ENT M37 NEF engine.