The John Deere 6420 is a 2WD or 4WD utility tractor manufactured by John Deere in Mannheim, Baden-Württemberg, Germany from 2002 to 2006.
The John Deere 6420 is equipped with one of two engines: the John Deere PowerTech 4045HL070 or 4045HL473 and one of four transmissions: a fully synchronized transmission with 12 forward and 4 reverse gears, a partial power shift transmission with 16 forward and 16 reverse gears, a partial power shift transmission with 24 forward and 24 reverse gears or infinitely variable transmission with infinite forward and reverse gears.
The tractor could be equipped with the following engines:
- John Deere PowerTech 4045HL070. It is a 4.5 L, 4,523 cm2, (276.0 cu·in) four-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. This engine produced 111.5 PS (82.0 kW; 110.0 HP) at 2,300 rpm ofoutput power and 370.2 N·m (37.7 kg·m, 272.8 ft·lb) at 1,500 rpm of torque.
- John Deere PowerTech 4045HL473. It is a 4.5 L, 4,523 cm2, (276.0 cu·in) four-cylinder turbocharged diesel engine. The cylinder bore is 106.0 mm (4.17 in) and the piston stroke is 127.0 mm (5 in). This engine produced 111.5 PS (82.0 kW; 110.0 HP) at 2,300 rpm of maximum output power and 469.2 Nm (47.86 kg·m; 346.27 ft·lb) at 1,500 rpm of torque.
The JD 6420 is equipped with hydrostatic power steering, hydraulic wet disc brakes, two-post ROPS and ConfortGard Cab (optional), and 185.0 liters (48.9 US gal.; 40.7 Imp. gal) fuel tank.
John Deere 6420 Specifications
| General Specifications | |
| Model | John Deere 6420 |
| Length | 4,130 mm (162.6 in) |
| Width | 1,560 mm (61.4 in) |
| Height | 2,490 mm (98 in) |
| Wheel base | 2,400 mm (94.5 in) |
| Weight | 5,040 kg (11,111 lbs) |
| Fuel tank capacity | 185.0 liters (48.9 US gal.; 40.7 Imp. gal) |
| Battery | 12V, 110Ah or 154Ah |
| Cabin type | Two-post ROPS and ConfortGard Cab (optional) |
| Engine | |
| Engine model | John Deere PowerTech 4045HL070 |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 4 |
| Fuel type | Diesel |
| Displacement | 4.5 L, 4,523 cm2, (276.0 cu·in) |
| Bore and stroke | 106.0 mm X 127.0 mm (4.17 in X 5 in) |
| Horsepower | 111.5 PS (82.0 kW; 110 HP) at 2,300 rpm |
| Torque | 370.2 N·m (37.7 kg·m, 272.8 ft·lb) at 1,500 rpm |
| Starter | Electric |
| Oil capacity: | 15.9 L (16.8 US. qt, 14 Imp. qt.) |
| Coolant capacity: | 13.9 L (14.7 US. qt, 12.2 Imp. qt.) |
| Engine | |
| Engine model | John Deere PowerTech 4045HL473 |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 4 |
| Fuel type | Diesel |
| Displacement | 4.5 L, 4,523 cm2, (276.0 cu·in) |
| Bore and stroke | 106.0 mm X 127.0 mm (4.17 in X 5 in) |
| Horsepower | 111.5 PS (82.0 kW; 110 HP) at 2,300 rpm |
| Torque | 469.2 Nm (47.86 kg·m; 346.27 ft·lb) at 1,500 rpm |
| Starter | Electric |
| Oil capacity: | 15.9 L (16.8 US. qt, 14 Imp. qt.) |
| Coolant capacity: | 13.6 L (14.4 US. qt, 12 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×2 2WD or 4×4 MFWD 4WD |
| Steering type | Hydrostatic power |
| Brakes | Hydraulic wet disc |
| Transmission model | John Deere SyncroPlus |
| Transmission type | Fully synchronized |
| Gears | 12 forward and 4 reverse |
| Speed | Forward: 28.6 kmh (17.8 mph) Reverse: 19.8 (12.3 mph) |
| Transmission oil capacity | 52.1 L (13.8 US. gal, 11.5 Imp. gal.) |
| Transmission model | John Deere PowrQuad |
| Transmission type | Partial power shift |
| Gears | 16 forward and 16 reverse |
| Speed | Forward: 28.6 kmh (17.8 mph) |
| Transmission oil capacity | 49.0 L (12.9 US. gal, 10.8 Imp. gal.) |
| Transmission model | John Deere PowrQuad Plus |
| Transmission type | Partial power shift |
| Gears | 24 forward and 24 reverse |
| Speed | Forward: 37.5 kmh (23.3 mph) |
| Transmission oil capacity | 50.0 L (13.2 US. gal, 11 Imp. gal.) |
| Transmission model | John Deere IVT |
| Transmission type | Infinitely variable transmission |
| Gears | Infinite forward and reverse |
| Speed | Forward: 40.2 kmh (25.0 mph) |
| Transmission oil capacity | 60.0 liters (15.9 US gal, 13.2 Imp. gal) |
| Tires | |
| Front tires | Ag: 10.00-16 (2WD), 13.6-24 (4WD) |
| Rear tires | Ag: 18.4-34 |
| Three-Point Hitch | |
| Caterogy | II |
| Control type | – |
| Lift capacity (at ends) | 2150 kg (4741 lbs) |
| PTO (Power take-off shaft) | |
| Front PTO type | Optional |
| Front PTO speed | 1,000 rpm |
| Rear PTO type | Independent |
| Rear PTO speed | 540, 540/1,000 rpm |
| Hydraulic system | |
| Hydraulic type | Closed center pressue flow compensated |
| Pressure | 2900 psi (199.9 bar) |
| Valves | 4 |
| Pump flow | 25.0 gpm (94.6 lpm) |

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