The Case IH 1255 and 1455 tractors represent robust and powerful agricultural machinery, designed for demanding farm operations. These models, produced primarily in the late 1980s and early 1990s, are known for their durable construction and reliable performance, offering substantial horsepower and torque essential for heavy draft work, tillage, and hauling. Built upon a strong heritage, these tractors were engineered to provide dependable service in challenging environments, making them a valuable asset for any agricultural enterprise seeking efficiency and longevity. This comprehensive service repair workshop manual provides detailed information for the maintenance, diagnosis, and repair of the Case IH 1255 and 1455 tractors. It covers all major systems, including the engine, transmission, hydraulics, electrical components, front and rear axles, and PTO. The manual offers step-by-step procedures for routine maintenance, component overhauls, adjustments, and troubleshooting, equipping owners, mechanics, and technicians with the knowledge necessary to keep these tractors operating at peak performance.