This manual pertains to the IVECO S30-ENT-M23 Diesel Engine, a robust and reliable unit engineered for demanding vehicle and equipment applications. The SOFIM engine family, with its 3000 cc displacement and 230 Hp output, is designed for optimal performance and efficiency, utilizing diesel fuel. Its construction reflects IVECO's commitment to quality engineering, ensuring durability and consistent operation across various operational environments. The purpose of this comprehensive English-language Service Repair Manual is to provide detailed guidance for the maintenance and repair of the IVECO S30-ENT-M23 Diesel Engine. It covers essential areas including general information, engine mechanical components, fuel, exhaust, cooling, lubrication, electrical, intake, and preheating systems. This manual is an indispensable resource for owners, mechanics, and technicians seeking to maintain the optimal performance and longevity of their diesel engines.