This Parts Catalog covers International Harvester (IH) / Case tractor models 4568 and 4586, produced during the late 1970s and early 1980s. These heavy-duty agricultural tractors are known for their robust engineering, powerful diesel engines, and reliable performance in demanding farming operations. The models represent a significant lineage in IH/Case's history, offering substantial horsepower, typically in the 150-200 HP range, and featuring robust drivetrain, hydraulic, and operator station components designed for durability and efficiency.

The purpose of this 190-page English-language Parts Catalog, publication number TC-176, is to provide comprehensive identification and referencing of individual tractor components. It includes detailed illustrations, assembly diagrams, sub-assembly breakdowns, and exploded views for all primary systems, such as the engine, drivetrain, hydraulics, electrical system, and operator station. This catalog is an essential resource for owners, operators, and service technicians, ensuring accurate part number referencing and facilitating the procurement of correct replacement parts for maintenance and repair.