This workshop service repair manual covers the Allis-Chalmers Model 220 tractor. Allis-Chalmers has a long history in agricultural and industrial equipment, and the Model 220 represents a specific iteration within their tractor lineup. This manual is designed to provide comprehensive information for maintaining and repairing this robust machine, ensuring its continued operational efficiency and longevity. This manual serves as an essential resource for professional technicians, DIY mechanics, and owners alike. It offers detailed repair and overhaul procedures for the engine, transmission, hydraulics, and chassis systems, including steering and braking. Coverage extends to periodic maintenance, routine service, troubleshooting guides, diagnostic information, and adjustment procedures. With hundreds of pages of detailed information, diagrams, and wiring schematics, this manual facilitates cost-effective labor by empowering users to perform repairs and maintenance themselves.