The Allis-Chalmers WC, produced from 1937 to 1948, is a foundational model in the agricultural machinery sector, renowned for its reliability and utility. This tractor, originating from the United States and manufactured in West Allis, Wisconsin, features a gasoline engine, often the Allis-Chalmers Model C, with a displacement of 201.5 cubic inches (3.3 L) and approximately 32 horsepower. Its robust design includes a manual transmission with four forward and one reverse gear, a wheelbase of approximately 76 inches, and a shipping weight between 2,400 and 2,700 lbs. While lacking modern technological amenities, the WC's enduring legacy is built upon its straightforward engineering and dependable performance in agricultural tasks. This comprehensive factory service repair manual provides essential information for the maintenance and repair of the Allis-Chalmers WC. Covering hundreds of pages, it details general information, engine specifications, cooling, fuel, and electrical systems, as well as the powertrain, clutch, differential lock, brakes, and hydraulic systems. The manual includes step-by-step repair procedures based on complete disassembly, maintenance guidelines, and troubleshooting assistance, supported by hundreds of photos and illustrations. Designed for both do-it-yourself enthusiasts and experienced mechanics, this English-language manual offers an inexpensive and convenient resource to ensure the continued proper functioning of your vehicle.