John Deere 4640

John Deere 4640The John Deere 4640 is a 2WD/4WD row-crop tractor from the Iron Horses series. This tractor was manufactured by John Deere in Waterloo, Iowa, USA from 1978 to 1982. The JD 4640 is equipped with a 7.6 L six-cylinder diesel engine and one of two transmissions: partial power shift transmission with 16 forward and 6 reverse gears or full power shift transmission with 8 forward and 4 reverse.

The John Deere 4640 row-crop tractor used the John Deere engine. It is a 7.6 L, 7,636 cm2, (466.0 cu·in) six-cylinder diesel engine with 116.0 mm (4.57 in) of the cylinder bore and 121.0 mm (4.76 in) of the piston stroke. This engine produced 157.2 PS (115.6 kW; 155.0 HP) of PTO output power.

The JD 4640 is equipped with hydrostatic power steering, differential hydraulic wet disc brakes, Sound-Gard cab and 314.2 liters (83 US gal.; 69.1 Imp. gal) fuel tank. This tractor could be equipped with the John Deere 168 loader.

John Deere 4640 Specifications

General Specifications
ModelJohn Deere 4640
Length4,340 mm (170.9 in)
Width2,430 mm (95.7 in)
Height2,970 mm (116.9 in)
Wheel base3,000 mm (118.1 in)
Weight7,121 kg (15,700 lbs)
Fuel tank capacity314.2 liters (83.0 US gal.; 69.0 Imp. gal)
Battery6V x 2
Cabin typeSound-Gard cab
Engine modelJohn Deere
Engine typeFour-stroke, liquid-cooled, inline
Fuel typeDiesel
Displacement7.6 L, 7,636 cm2, (466.0 cu·in)
Bore and stroke116.0 mm X 121.0 mm (4.57 in X 4.76 in)
Compression ratio 15.5:1
Horsepower157.2 PS (115.6 kW; 155.0 HP)
Oil capacity:18.9 L (20 US. qt, 16.6 Imp. qt.)
Coolant capacity:36.0 L (38 US. qt, 31.7 Imp. qt.)
Transmission and chassis
Chassis4×2 2WD or 4×4 MFWD 4WD
Steering typeHydrostatic power
BrakesDifferential hydraulic wet disc
Differential lockPedal-actuated hydraulic
Transmission modelJohn Deere Quad-Range
Transmission typePartial power shift
Gears16 forward and 6 reverse
Speed Forward: 31.5 kmh (19.6 mph) Reverse: 20.3 (12.6 mph)
Transmission modelJohn Deere PowerShift
Transmission typeFull power shift
Gears8 forward and 4 reverse
Speed Forward: 31.4 kmh (19.5 mph) Reverse: 10.8 (6.7 mph)
Front tiresAg: 11.00-16, 10.00-16, 14L-16.1, 16.5L-16.1, 9.50-20
Rear tiresAg: 18.4-38, 24.5-32, 30.5-32, 20.8-38, 18.4-42
Three-Point Hitch
Control type
Lift capacity (at ends)3,320 kg (7,320 lbs)
PTO (Power take-off shaft)
Rear PTO typeIndependent
Rear PTO spped1,000 rpm
Hydraulic system
Hydraulic typeClosed center
Hydraulic capacity62.5 L (66.04 US. qt, 54.99 Imp. qt.)
Valves2 to 3
Pump flow23.0 gpm (87.1 lpm)
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