The Allis Chalmers CA is a historically significant tractor model, produced in the mid-20th century. Known for its versatility and agricultural applications, the CA represents a key generation of equipment from Allis Chalmers, a renowned American manufacturer. This model embodies the engineering quality and reliability characteristic of its era, designed to meet the demanding needs of farming and other heavy-duty tasks. Its robust construction and practical design have made it a lasting presence in the agricultural machinery landscape. This Workshop Service Manual provides comprehensive coverage for the Allis Chalmers CA, focusing on repair and maintenance. It details procedures for adjustments, troubleshooting, and component removal and installation, encompassing all major systems including the engine, transmission, chassis, hydraulics, and electrical systems. The manual is designed to facilitate efficient and accurate service for both mechanics and DIY owners, offering step-by-step explanations, detailed diagrams, and essential service data to ensure the longevity and optimal performance of the tractor.