Allis Chalmers 4W-220

The Allis Chalmers 4W-220 is a four-wheel drive (4WD) tractor produced from 1982 to 1984. It features a powerful 7.0L 6-cylinder turbocharged intercooled diesel engine delivering 220 hp (164.1 kW) with a 20-speed two-speed power shift transmission. The tractor includes planetary final drives, wet disc brakes, and a standard cab with air-conditioning. It has a large 200-gallon fuel tank and advanced hydraulics with closed center load-sensing and 3 valves. The 4W-220 offers a rear independent PTO rated at 1000 rpm and optional IV/III rear hitch. Dimensions include a 126-inch wheelbase, 129.4-inch length, and a shipping weight of 21,475 lbs. Tires come in various agricultural sizes for front and rear. Electrical system is 12 volts with negative ground and alternator charging. The 4W-220 is related to the 4W-305 and the earlier 7580 model.