The Allis-Chalmers Model WC is a highly successful and significant utility tractor, produced from 1933 to 1951. This model played a crucial role in the mechanization of American agriculture, offering robust performance and reliability. Designed with a focus on durability for demanding agricultural tasks, the WC typically features a 4-cylinder engine, a manual transmission, and a single-plate dry clutch, all engineered for dependable operation. Its substantial construction, with a wheelbase of approximately 82 inches and an operating weight that can exceed 4,000 lbs, underscores its capability for heavy-duty work. The Model WC represents a cornerstone of agricultural history, known for its enduring service and efficiency. This comprehensive workshop service repair manual provides complete information for the Allis-Chalmers Model WC Tractor. It covers essential areas including engine mechanical and electrical systems, fuel, suspension, clutch, transmission, steering, brakes, and body components. Detailed step-by-step repair instructions, diagnostic procedures, and routine maintenance schedules are included to assist owners and technicians. The manual is enhanced with detailed illustrations, diagrams, and wiring schematics, offering clear guidance for troubleshooting and repairs. Its purpose is to serve as the definitive resource for maintaining the Model WC Tractor, ensuring its continued operational integrity and longevity.