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
Model John Deere 4840
Length 4,490 mm (176.8 in)
Width 2,430 mm (95.7 in)
Height 2,970 mm (116.9 in)
Wheel base 3,000 mm (118.1 in)
Weight (operating) 8,165 kg (18,000 lbs)
Fuel tank capacity 390.0 liters (103 US gal.; 85.8 Imp. gal)
Battery Two 6V
Cabin type Sound-Gard Cab
Engine model John Deere
Engine type Four-stroke, liquid-cooled, inline
Cylinders 6
Fuel type Diesel
Displacement 7.6 L, 7,636 cm2, (466.0 cu·in)
Bore and stroke 116.0 mm X 121.0 mm (4.57 in X 4.76 in)
Compression ratio 15.5:1
Horsepower 202.6 PS (149.0 kW; 200.0 HP)
Starter Electric
Coolant capacity: 37.9 L (40 US. qt, 33.3 Imp. qt.)
Transmission and chassis
Chassis 4×2 2WD
Steering type Power
Brakes Differential hydraulic wet disc
Differential lock Pedal-actuated hydraulic
Transmission model John Deere PowerShift
Transmission type Full power shift
Gears 8 forward and 4 reverse
Speed Forward: 29.9 kmh (18.6 mph) Reverse: 10.3 (6.4 mph)
Transmission oil capacity 75.7 L (20 US. gal, 16.7 Imp. gal.)
Front tires Ag: 11.00-16
Rear tires Ag: 18.4-38
Three-Point Hitch
Caterogy III/IIIN
Control type
Lift capacity (at ends) 3,760 kg (8,290 lbs)
PTO (Power take-off shaft)
Rear PTO type Independent
Rear PTO speed 1,000 rpm
Hydraulic system
Hydraulic type Closed center
Hydraulic capacity 62.5 L (66.04 US. qt, 54.99 Imp. qt.)
Valves 2 or 3
Pump flow 23.0 gpm (87.1 lpm)
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