John Deere 8640

The John Deere 8640 is a four-wheel drive (4WD) tractor produced from 1979 to 1982 as part of the Iron Horses Series. Built in Waterloo, Iowa, USA, it features a powerful 10.1L 6-cylinder turbocharged diesel engine producing 275 hp (205.1 kW). The tractor is equipped with a 16-speed partial power shift John Deere Quad-Range transmission, hydraulic wet disc brakes, articulated power steering, and a standard cab. It has a fuel capacity of 214 gallons and a hydraulic system capacity of 41 gallons. The 8640 offers a rear PTO independent with 1000 RPM and a rear hitch lift capacity of 8545 lbs. Dimensions include a 125-inch wheelbase, 223.5-inch length, and an operating weight of 28,270 lbs. Tires are sized 18.4-34 front and rear. Electrical system features a 12-volt starter, 2 batteries, and a 90-amp alternator. The tractor was originally priced at $80,000 in 1982 and is part of a series including the 8630, 8440, and 8650 models.