The Allis-Chalmers D-17 tractor, produced between 1957 and 1967, represents a significant model in the brand's history of agricultural machinery. Known for its versatility, the D-17 was available in gasoline, diesel, and LP-gas variants, and featured the innovative Power Director transmission, which effectively doubled the number of forward gears. This robust machine was engineered for reliability and performance, making it a cornerstone for farmers and operators seeking dependable power for a wide range of tasks. Its design emphasized operator control and stable operation, reflecting the agricultural technology of its era. This comprehensive Factory Service Repair Manual provides all the necessary information for the maintenance and repair of the Allis-Chalmers D-17 tractor. It covers essential areas including routine maintenance procedures, detailed engine overhaul instructions for all fuel types, fuel system service, cooling and ignition system maintenance, and in-depth repair guides for the transmission, final drive, hydraulic system, PTO, steering, and brake systems. Additionally, the manual includes electrical system diagnostics, chassis and bodywork repair, and troubleshooting charts for common issues. With factory-level detail, torque specifications, clearance measurements, and electrical schematics, this manual is an indispensable resource for owners, mechanics, and technicians dedicated to preserving the longevity and optimal performance of their D-17 tractor.