This workshop service repair manual covers the Allis-Chalmers 8050, a tractor model renowned for its robust engineering and reliability, characteristic of the American manufacturer's agricultural and construction equipment. As part of the Allis-Chalmers '00' series, the 8050 represented a significant advancement in tractor technology during its production period, likely spanning the late 1970s to early 1980s. This manual is designed to provide comprehensive support for all service and repair procedures across all models, engines, trim, and transmission types, empowering owners and technicians to maintain this capable machine. The scope of this manual is extensive, encompassing detailed A-Z repair and service procedures with step-by-step instructions and illustrations. It covers all major systems, including the engine, transmission, drivetrain, hydraulics, electrical system, brakes, steering, cooling, fuel, exhaust, chassis, and operator station. Furthermore, it provides guidance on general maintenance, engine overhauls, transmission rebuilds, troubleshooting hydraulic and electrical faults, component replacement, system adjustments, and the identification of special tools. This resource is intended to be an indispensable guide for performing repairs, saving costs, and minimizing downtime.