The Allis-Chalmers 7080 is a robust, heavy-duty agricultural tractor, part of the 7000 series that represented a significant advancement in horsepower and features for the brand during its production period in the late 1970s and early 1980s. Engineered for demanding agricultural operations, this direct injection diesel tractor offers substantial power, with approximately 150-160 PTO horsepower and high torque output for exceptional lugging capability. Its design philosophy emphasizes reliability and power, making it a capable machine for a wide range of field tasks. Key features include a 20-speed Power Shift transmission for on-the-go shifting, a pressurized liquid cooling system, and hydraulic disc brakes for reliable stopping power. This comprehensive Factory Service Repair Manual provides essential information for the maintenance, repair, and troubleshooting of the Allis-Chalmers 7080. It covers critical systems including the engine, transmission, hydraulic systems, electrical system, and chassis. Detailed procedures for routine maintenance, such as lubrication and fluid changes, are included alongside in-depth repair instructions for all major components. The manual also offers diagnostic procedures and symptom-based troubleshooting charts to address common and uncommon faults. With its extensive coverage, this manual is an indispensable resource for owners, mechanics, and technicians seeking to maintain the optimal performance and longevity of their 7080 tractor.