The Allis Chalmers 7045 Tractor, produced from the late 1970s through the early 1980s, represents a significant offering within the 7000 series, known for robust build and performance. This model, a mid-to-high horsepower agricultural machine, was designed for demanding tasks, embodying the historic American manufacturer's commitment to reliable and powerful equipment. Its engineering prioritizes durability and operational efficiency, making it a capable workhorse for various agricultural applications. This comprehensive workshop service manual provides essential information for the maintenance and repair of the Allis Chalmers Model 7045 Tractor. It covers a wide array of systems, including the engine, transmission, electrical, hydraulics, fuel, cooling, lubrication, brake, and steering systems, along with chassis and bodywork. The manual includes detailed procedures for periodic maintenance, routine servicing, step-by-step repairs, overhauls, and diagnostics, making it an invaluable resource for professional technicians and experienced owners alike.