John Deere 8440

The John Deere 8440 is a four-wheel drive (4WD) tractor produced from 1979 to 1982 as part of the Iron Horses Series. It was built in Waterloo, Iowa, USA, and originally priced at $64,000 in 1982. It features a John Deere 7.6L 6-cylinder turbocharged diesel engine producing 215 hp, paired with a 16-speed partial power shift John Deere Quad-Range transmission. The tractor includes hydraulic wet disc brakes, articulated power steering, and a standard cab. It has a fuel capacity of 156 gallons and a hydraulic system capacity of 40 gallons. The rear hitch is category III with a lift capacity of 8545 lbs. The tractor weighs 26,590 lbs with 20.8-38 dual tires and has a wheelbase of 125 inches. Electrical system includes a 12-volt starter, alternator charging system with 90 amps, and two 6-volt batteries. The 8440 was succeeded by the John Deere 8450 and is related to the 8640 model.