John Deere 4840

John Deere 4840The John Deere 4840 is a 2WD 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 4840 is equipped with a 7.6 L six-cylinder diesel engine and full power shift transmission with 8 forward and 4 reverse gears.

The John Deere 4840 row-crop tractor used the John Deere engine. It is a 7.6 L, 7,636 cm2, (466.0 cu·in) six-cylinder turbocharged intercooled 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 202.6 PS (149.0 kW; 200.0 HP) of output power.

The John Deere 4840 is equipped with power steering, differential hydraulic wet disc brakes, Sound-Gard Cab and 390.0 liters (103 US gal.; 85.8 Imp. gal) fuel tank.

John Deere 4840 Specifications

General Specifications
ModelJohn Deere 4840
Length4,490 mm (176.8 in)
Width2,430 mm (95.7 in)
Height2,970 mm (116.9 in)
Wheel base3,000 mm (118.1 in)
Weight (operating)8,165 kg (18,000 lbs)
Fuel tank capacity390.0 liters (103 US gal.; 85.8 Imp. gal)
BatteryTwo 6V
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 ratio15.5:1
Horsepower202.6 PS (149.0 kW; 200.0 HP)
Coolant capacity:37.9 L (40 US. qt, 33.3 Imp. qt.)
Transmission and chassis
Chassis4×2 2WD
Steering typePower
BrakesDifferential hydraulic wet disc
Differential lockPedal-actuated hydraulic
Transmission modelJohn Deere PowerShift
Transmission typeFull power shift
Gears8 forward and 4 reverse
Speed Forward: 29.9 kmh (18.6 mph) Reverse: 10.3 (6.4 mph)
Transmission oil capacity75.7 L (20 US. gal, 16.7 Imp. gal.)
Front tiresAg: 11.00-16
Rear tiresAg: 18.4-38
Three-Point Hitch
Control type
Lift capacity (at ends)3,760 kg (8,290 lbs)
PTO (Power take-off shaft)
Rear PTO typeIndependent
Rear PTO speed1,000 rpm
Hydraulic system
Hydraulic typeClosed center
Hydraulic capacity62.5 L (66.04 US. qt, 54.99 Imp. qt.)
Valves2 or 3
Pump flow23.0 gpm (87.1 lpm)
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