This workshop service repair manual covers the Perkins RE, RF, RG, RH, RJ, and RK 1100 Series engines. Specifically, it details the 4.4L, 4-cylinder, in-line, 4-stroke diesel engines, which are available in naturally aspirated and turbocharged configurations. These engines are engineered for robust performance and reliability, making them suitable for a wide range of demanding applications where dependable power is essential. This comprehensive manual provides detailed, step-by-step instructions for maintenance, repair, and servicing. It includes essential information such as general specifications, tightening torques, and the use of special tools. Key areas covered include the cylinder head, piston, connecting rod, crankshaft, timing case, drive assembly, cylinder block, turbocharger system, aspiration, lubrication, fuel, and cooling systems, as well as electrical equipment and auxiliary components. This resource is designed to assist owners, technicians, and mechanics in effectively maintaining and repairing these Perkins engines.