The Allis Chalmers 5020 is a small utility tractor made from 1977 to 1985. It has a 2WD chassis and is powered by a Toyosha S126 diesel engine. This engine has 2 cylinders and produces 25 hp, which is below average for tractors. The engine is naturally aspirated and liquid-cooled, with a displacement of 77.1 ci.
This tractor has a sliding gear transmission with 8 forward and 2 reverse gears. It features a three-point hitch at the rear, which is category I. The 5020 also has a rear PTO that runs at 540 rpm. The hydraulic system is open center type. The tractor weighs 2060 lb, which is quite light compared to many other tractors. It measures 98.9 inches long, 48 inches wide, and 75.6 inches high. The operator station is open, with an optional ROPS (Roll-Over Protective Structure) available for safety. Farmers can also add a canopy to the ROPS for extra protection from the sun.