The John Deere 6620 Premium is a 4WD utility tractor from the 6020 series. This tractor was manufactured by John Deere from 2001 to 2006. This first generation was manufactured from 2001 to 2003. The John Deere 6620 Premium is equipped with a 6.8 L (414.0 cu·in) six-cylinder diesel engine and one of two transmissions: PowrQuad Plus transmission with 24 forward and 24 reverse gears or AutoQuad II transmission with 24 forward and 24 reverse gears.
The John Deere 6620 Premium utility tractor used the John Deere 6068T engine. It is a 6.8 L, 6,785 cm2, (414.0 cu·in) six-cylinder turbocharged intercooled diesel engine with 106.0 mm (4.17 in) of the cylinder bore and 127.0 mm (5 in) of the piston stroke. This engine produced 126.8 PS (93.2 kW; 125 HP) at 2,300 rpm of output power.
The JD 6620 Premium is equipped with hydrostatic power steering, wet disc brakes, Cab (standard) and 207.0 liters (54.7 US gal.; 45.5 Imp. gal) fuel tank.
John Deere 6620 Premium Specifications
| General Specifications | |
| Model | John Deere 6620 Premium |
| Length | – |
| Width | – |
| Height | – |
| Wheel base | – |
| Weight | 5,230 kg (11,530 lbs) |
| Fuel tank capacity | 207.0 liters (54.7 US gal.; 45.5 Imp. gal) |
| Battery | 12V |
| Cabin type | Cab (standard) |
| Engine | |
| Engine model | John Deere 6068T |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 6 |
| Fuel type | Diesel |
| Displacement | 6.8 L, 6,785 cm2, (414.0 cu·in) |
| Bore and stroke | 106.0 mm X 127.0 mm (4.17 in X 5 in) |
| Horsepower | 126.8 PS (93.2 kW; 125 HP) at 2,300 rpm |
| Torque | 531.6 N·m (54.2 kg·m, 391.8 ft·lb) at 1,500 rpm |
| Starter | Electric |
| Transmission and chassis | |
| Chassis | 4×4 MFWD 4WD |
| Steering type | Hydrostatic power |
| Brakes | Wet disc |
| Transmission model | PowrQuad Plus |
| Transmission type | Partial power shift |
| Gears | 24 forward and 24 reverse |
| Transmission model | AutoQuad II |
| Transmission type | Partial power shift |
| Gears | 24 forward and 24 reverse |
| Tires | |
| Front tires | Ag: 14.9R28 |
| Rear tires | Ag: 18.4R38 |
| Three-Point Hitch | |
| Category | II/IIIN |
| Control type | – |
| Lift capacity | 7,420 kg (16,360 lbs) |
| PTO (Power take-off shaft) | |
| Rear PTO type | Independent |
| Rear PTO speed | 540/1000 rpm |
| Hydraulic system | |
| Hydraulic type | Closed center load sensing (CCLS) |
| Pressure | 2900 psi (200.0 bar) |
| Pump flow | 25.4 gpm (96.1 lpm) |
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