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The John Deere 7720 is a 2WD or 4WD row-crop tractor from the 7020 series. This tractor was manufactured by John Deere in Waterloo, Iowa, USA from 2004 to 2007. The John Deere 7720 is equipped with a 6.8 L (414.0 cu·in) six-cylinder diesel engine and one of four transmission variants.
The JD 7720 row-crop tractor used the John Deere engine. It is a 6.8 L, 6,784 cm2, (414.0 cu·in) six-cylinder turbocharged diesel engine with 106.0 mm (4.17 in) of the cylinder bore and 127.0 mm (5 in) of the piston stroke. The compression ratio rating is 17.0:1. This engine produced 184.6 PS (135.7 kW; 182.0 HP) at 2,100 rpm of output power.
The John Deere 7720 is equipped with hydrostatic power steering, hydraulic wet disc brakes, cab standard, and 391.7 liters (103.5 US gal.; 86.2 Imp. gal) fuel tank.
John Deere 7720 Specifications
General Specifications
Model
John Deere 7720
Length
5,380 mm (211.8 in)
Width
Short axle: 2,430 mm (95.7 in) Long axle: 2,990 mm (117.7 in)
Height (cab)
3,180 mm (125.2 in)
Wheel base
2,860 mm (112.6 in)
Ground clearance (front axle)
2WD: 650 mm (25.6 in) 4WD: 560 mm (22 in)
Weight (shipping)
2WD: 7,030 kg (15,498 lbs) 4WD: 7,485 kg (16,502 lbs)
Fuel tank capacity
391.7 liters (103.5 US gal.; 86.2 Imp. gal)
Battery
Two 12V, CCA 925A
Cabin type
Cab standard
Engine
Engine model
John Deere
Engine type
Four-stroke, liquid-cooled, inline
Cylinders
6
Fuel type
Diesel
Displacement
6.8 L, 6,784 cm2, (414.0 cu·in)
Bore and stroke
106.0 mm X 127.0 mm (4.17 in X 5 in)
Compression ratio
17.0:1
Horsepower
184.6 PS (135.7 kW; 182.0 HP) at 2,100 rpm
Starter
Electric
Oil capacity:
26.0 L (27.5 US. qt, 22.9 Imp. qt.)
Coolant capacity:
32.0 L (33.8 US. qt, 28.2 Imp. qt.)
Transmission and chassis
Chassis
4×2 2WD or 4×4 MFWD 4WD (optional)
Steering type
Hydrostatic power
Brakes
Hydraulic wet disc
Front axle
14.4 L (15.22 US.qts, 12.67 Imp. qts)
Front hubs
1.9 L (2.1 US.qts, 1.67 Imp. qts)
HD Front hubs
3.8 L (4.0 US.qts, 3.34 Imp. qts)
Transmission model
PowrQuad Plus
Transmission type
Partial power shift with hydraulic wet disc clutch
Gears
16 forward and 16 reverse
Transmission model
PowrQuad Plus
Transmission type
Partial power shift with hydraulic wet disc clutch
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The John Deere 7720 is a 2WD or 4WD row-crop tractor from the 7020 series. This tractor was manufactured by John Deere in Waterloo, Iowa, USA from 2004 to 2007. The John Deere 7720 is equipped with a 6.8 L (414.0 cu·in) six-cylinder diesel engine and one of four transmission variants. 
