The Allis-Chalmers CA, produced from 1948 to 1957, is a versatile utility tractor renowned for its distinctive orange paint and robust engineering. Designed for a wide range of agricultural tasks, this model represents a significant step in tractor development for its era, offering reliability and practicality for farmers. Its typical configuration includes a 4-cylinder engine, often running on gasoline or LP gas, and a constant mesh transmission, providing dependable performance for various operational needs. The Allis-Chalmers CA is a testament to the manufacturer's commitment to producing durable and effective machinery. This comprehensive workshop service repair manual is an essential resource for maintaining and repairing the Allis-Chalmers Model CA tractor. It provides detailed, step-by-step instructions covering engine overhaul, transmission service, electrical and fuel systems, cooling and lubrication, ignition, hydraulics, brakes, steering, suspension, and chassis. The manual includes routine maintenance schedules, troubleshooting guides, wiring diagrams, and overhaul procedures, making it suitable for both professional technicians and do-it-yourself mechanics. Its extensive coverage ensures that owners and operators have the necessary information to keep their tractor in optimal working condition.