This workshop service repair manual covers the Case IH 1255 and 1455 series tractors, agricultural machines renowned for their robust engineering and reliability. These tractors, likely produced in the 1980s and early 1990s, represent a significant part of Case IH's heritage in agricultural machinery. They are designed for demanding farm work, offering dependable performance through their powerful diesel engines and versatile transmission systems. The engineering quality of these models ensures they are capable of handling extensive operational hours and various agricultural tasks, making them a valuable asset for any farm or agricultural operation. This comprehensive manual provides detailed information essential for the maintenance, repair, and diagnosis of your Case IH 1255 or 1455 tractor. It covers all major systems, including the engine, transmission, hydraulics, electrical system, fuel system, cooling system, brakes, and steering. Within its pages, you will find step-by-step repair instructions, detailed disassembly and assembly procedures, troubleshooting guides, and technical specifications, including torque values and clear illustrations. This resource is invaluable for DIY mechanics, farm owners, agricultural workshops, and professional technicians seeking to maintain the optimal performance and longevity of their equipment.