This workshop service repair manual covers the Perkins 2306 and 2806 industrial diesel engines. It is applicable to 14.6L and 15.8L, 6-cylinder in-line, 4-stroke, turbocharged, direct injection diesel engines. These engines are engineered for robust performance and reliability in demanding industrial applications, offering powerful and efficient operation. This comprehensive manual provides detailed information for the maintenance, servicing, and repair of these Perkins diesel engines. It includes general information, specifications, and in-depth procedures for all major engine components and systems, such as the cylinder head, pistons, crankshaft, fuel system, lubrication system, cooling system, and electronic controls. With step-by-step instructions, illustrations, and diagrams, this manual serves as an essential resource for owners, technicians, and mechanics to ensure optimal engine performance and longevity.