The Allis-Chalmers C Tractor, introduced in 1947 and produced until 1955, represents a significant step in post-war agricultural mechanization. Evolving from the successful Model B, this versatile tractor was designed for small to medium farms, offering reliability and ease of use. Featuring an inline 4-cylinder gasoline engine with approximately 149 cubic inches of displacement and around 28-32 PTO horsepower, it was equipped with a constant mesh, sliding gear manual transmission, typically offering four or five forward gears and one reverse. Its robust construction and adjustable rear tread made it a practical choice for a variety of farming tasks, contributing to increased efficiency and productivity during its era. This comprehensive Service Repair Workshop Manual provides in-depth information for the Allis-Chalmers C Tractor. It covers essential areas including engine overhaul, transmission service, clutch and brake system repairs, rear axle and final drive maintenance, steering system diagnosis, and the electrical system. Detailed procedures for hydraulic and power take-off systems, front axle components, and operator controls are also included. The manual offers step-by-step repair instructions, troubleshooting guides, maintenance schedules, overhaul procedures, and technical specifications, ensuring owners, mechanics, and agricultural repair professionals have the necessary resources to maintain and repair this classic tractor effectively.