The Allis-Chalmers CA Tractor, produced from 1950 to 1957, represents a significant development in agricultural machinery. Building upon the legacy of its predecessors, the CA model featured an upgraded engine, specifically the Allis-Chalmers Model G-226 inline 6-cylinder engine with a displacement of 226 cubic inches, providing approximately 34-37 PTO horsepower. This robust tractor, with a wheelbase of about 78 inches and an operating weight ranging from 4,000 to 4,500 lbs, was designed for versatility and reliability on the farm. Its engineering quality and enduring performance have made it a respected piece of equipment, contributing to farm mechanization during its production era. This Service Repair Manual provides comprehensive coverage for all service and repair aspects of the Allis-Chalmers Model CA Tractor. It details essential maintenance procedures, troubleshooting guides, diagnostic information, and step-by-step instructions for disassembly and reassembly of all major systems, including the engine, transmission, brakes, electrical system, and more. The manual is designed to empower both owners and professional technicians, offering the technical depth required for everything from routine lubrication to complex component overhauls, ensuring the continued operation and longevity of the tractor.