The Allis-Chalmers 170 and 175 tractors represent robust agricultural machinery from the 1970s, known for their reliable performance and durable construction. These tractors, manufactured by the Allis-Chalmers Manufacturing Company, were designed to meet the demanding needs of farming operations. Their engineering quality and inherent reliability made them a trusted choice for do-it-yourself owners, farm mechanics, and restoration enthusiasts alike. The models were typically equipped with diesel engines and multi-speed manual transmissions, offering practical power and versatility for a wide range of tasks. This comprehensive service repair manual provides detailed information essential for maintaining and repairing the Allis-Chalmers 170 and 175 tractors. It covers all major systems, including the engine, cooling system, fuel system, power train, brakes, and electrical system, offering step-by-step instructions for maintenance, repair, and disassembly/assembly procedures. With hundreds of illustrations and factory-level detail, this manual is an indispensable resource for ensuring the longevity and optimal performance of your tractor, enabling owners and technicians to effectively troubleshoot issues and perform necessary servicing.