This manual covers the C4.4 Industrial Engine, an inline 4-cylinder diesel engine with a displacement of 4.4 liters. Designed for robust performance and reliability in demanding industrial applications, this engine features a common rail electronic fuel injection system and is turbocharged and aftercooled. With a bore of 105.0 mm and a stroke of 127.0 mm, it typically operates with a compression ratio of 18.0:1 and meets emission standards such as Tier 3/Stage IIIA. Its power and torque output vary by application, generally ranging from 70-150 hp and 230-450 lb-ft respectively. This comprehensive Disassembly and Assembly Instructions manual provides essential information for the maintenance and repair of your C4.4 Industrial Engine, serial number range 446-1 UP. Within its 144 pages, you will find detailed procedures, technical specifications, and guidance on critical aspects such as oil and coolant capacities, typical oil change intervals, and lubrication and cooling system details. This manual is an indispensable resource for owners, mechanics, and technicians to ensure the optimal performance, longevity, and proper functioning of this industrial engine.