The Case IH 385, 485, and 585 series tractors represent robust utility vehicles produced primarily in the mid-1980s to early-1990s. These machines, often built on shared platforms with Massey Ferguson models, were designed for a wide range of agricultural tasks. They are characterized by their dependable diesel engines, manual transmissions, and functional hydraulic systems, embodying the engineering quality and reliability expected from Case IH. While lacking modern digital features, their straightforward design and durable construction have made them enduring workhorses for owners with basic mechanical skills and independent service professionals. This Service Repair Workshop Manual provides comprehensive guidance for the Case IH 385, 485, and 585 models. It covers essential maintenance procedures, detailed troubleshooting steps, and in-depth repair instructions for all major systems, including the engine, transmission, hydraulics, electrical systems, brakes, and steering. With step-by-step instructions, diagrams, illustrations, and wiring schematics, this manual empowers owners and technicians to perform everything from routine servicing to complete overhauls, ensuring the longevity and optimal performance of these tractors. The content is designed to be vehicle-specific, offering the same level of detail found in official dealer manuals.