This manual covers Case IH and Case International tractors, specifically models 2090, 2290, 2390, 2590, 2094, 2294, 2394, and 2594. These robust diesel-powered tractors, primarily produced in the late 1970s and 1980s, are known for their durability and performance in agricultural applications. Featuring powerful inline 6-cylinder turbocharged engines with horsepower ranging from approximately 90 to 125 PTO HP, these machines offer reliable operation. They are equipped with advanced transmission options for their era, including mechanical shift and power shift capabilities, alongside comprehensive hydraulic, fuel, cooling, and electrical systems. The engineering quality of Case IH tractors from this period is well-established, making them a dependable choice for demanding work. This comprehensive Service Repair Workshop Manual is designed to provide essential information for the maintenance, repair, and troubleshooting of the covered Case IH tractor models. It details procedures for a wide array of systems, including the engine, transmission (both mechanical and power shift), PTO, hydraulic system, fuel system, cooling system, electrical system, brakes, front and rear axles, final drives, differential, differential lock, park lock, power steering, and cab. The manual offers step-by-step instructions for repair and overhaul, diagnostic trees for fault finding, detailed technical specifications, and lubrication charts. With zoomable illustrations, exploded views, and part number breakdowns, this manual serves as an indispensable resource for tractor owners, mechanics, and service technicians to ensure optimal performance and longevity of their equipment.