The International Harvester 454 Tractor, produced primarily in the early to mid-1970s, represents a robust and reliable piece of agricultural machinery. As part of International Harvester's legacy of producing dependable equipment, the 454 was designed for a variety of farm tasks, offering a blend of power and utility. Its typical diesel engine, often a Perkins or International Harvester unit, provided ample horsepower for its class, while its transmission, commonly an 8-speed synchromesh, allowed for efficient operation. This tractor was engineered for durability and ease of maintenance, making it a valuable asset for row crop farming and general farm work. This comprehensive Workshop Service Manual provides detailed information for the International Harvester 454 Tractor. It covers all essential systems, including the engine, fuel, cooling, lubrication, transmission, drivetrain, hydraulics, electrical, braking, and steering systems, as well as chassis and operator station components. The manual offers step-by-step repair instructions, overhaul procedures, diagnostic troubleshooting guides, maintenance schedules, and technical specifications. Written for professional technicians and serious DIY mechanics, this manual is designed to facilitate accurate maintenance and repair, enabling owners to keep their 454 Tractor in optimal working condition and potentially reduce labor costs.