The Allis-Chalmers Model 220 Tractor represents a robust and reliable piece of agricultural machinery, a testament to the manufacturer's heritage of producing durable equipment. Known for its engineering quality, this tractor was designed to meet the demanding needs of farm work and various utility tasks. Its lineage within the Allis-Chalmers tractor lineup suggests a focus on versatility and dependable performance, making it a valuable asset for owners, mechanics, and restoration enthusiasts. The Model 220 embodies the practical innovation characteristic of mid-to-late 20th-century agricultural mechanization. This comprehensive Service and Repair Manual provides essential information for maintaining and repairing the Allis-Chalmers Model 220 Tractor. It covers a wide array of critical systems, including detailed engine and transmission service, brake system maintenance, electrical system troubleshooting, and suspension and steering repairs. The manual also includes procedures for general maintenance, disassembly and reassembly, and troubleshooting common issues. Its purpose is to empower users with the knowledge required for efficient upkeep, diagnostics, and repair, ensuring the longevity and optimal performance of the tractor.