John Deere 6420
Power
110 hp
Production
2002-2006
Transmission
John Deere SyncroPlus
Drive
2WD/4WD
From the same series:
Introduction
John Deere 6420 Utility Tractor
The John Deere 6420 is a versatile utility tractor manufactured in Mannheim, Germany, between 2002 and 2006. It belongs to the 6020 series, designed to provide reliable performance for diverse agricultural applications, offering both two-wheel and four-wheel drive configurations.
Engine and Performance
The tractor is powered by a 4.5-liter, four-cylinder liquid-cooled engine (model 4045HL475) delivering 110 hp (82.0 kW). It utilizes a Denso High-Pressure Common Rail (HPCR) fuel injection system and meets Tier II emissions standards. The engine operates at a rated speed of 2300 RPM, with a maximum torque of 346 lb-ft reached at 1500 RPM.
Transmission Options
The 6420 offers four distinct transmission choices to suit various operational needs. These include the fully synchronized SyncroPlus (12 forward/4 reverse), the partial power shift PowrQuad (16 forward/16 reverse), the PowrQuad Plus (24 forward/24 reverse), and the Infinitely Variable Transmission (IVT). All versions feature wet disc clutches and are designed for smooth directional and gear changes.
Hydraulics and Hitch
The hydraulic system is a closed-center, pressure-flow compensated type, delivering a pump flow of 25 gpm (94.6 lpm) at a pressure of 2900 psi (200 bar). The rear hitch is Category II, capable of lifting up to 4745 lbs (2152 kg). An independent rear PTO is standard, with an optional front PTO available for increased versatility.
Operator Environment and Dimensions
The tractor is equipped with a two-post ROPS as standard, with the ComfortGard cab available as an option. Steering is managed via a hydrostatic power system, while braking is handled by hydraulic wet disc brakes. The machine has a wheelbase of 94.5 inches and a minimum width of 61.8 inches, facilitating maneuverability in various field conditions.
Conclusion
The John Deere 6420 is a robust utility tractor suited for a wide range of medium-duty agricultural tasks. Its variety of transmission options and hydraulic capacity make it a flexible choice for operators requiring a balance of power and precision in a mid-sized platform.
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Production Information of John Deere, 6420
- Utility tractor
- Built in Mannheim, Baden-Württemberg, Germany
| Manufacturer | John Deere |
|---|---|
| Original price | $44,000 (2007) |
Dimension and Tires Information of John Deere, 6420
| Front tread | 58.7 to 101.7 inches [149 to 258 cm (2WD)] |
|---|---|
| Wheelbase | 94.5 inches [240 cm] |
| Clearance (front axle) | 23.1 inches (2WD) [58 cm] |
| Height | 98.3 inches [249 cm] |
| Length | 162.7 inches [413 cm] |
| Front tread | 59.7 to 79.4 inches [151 to 201 cm (4WD)] |
| Front tread(optional) | 18 inches (4WD) [45 cm] |
| Min Width | 61.8 inches [156 cm] |
| Rear tread | 63.1 to 90.6 inches [160 to 230 cm] |
| Standard tires (ag) | Front: 10.00-16. Rear: 18.4-34 (2WD) |
|---|---|
| Standard tires (ag)(optional) | Front: 13.6-24. Rear: 18.4-34 (4WD) |
Engine Specifications of John Deere, 6420
- Liquid-cooled
- Used a Denso High-Pressure Common Rail (HPCR) fuel injection system. Also engine model 4045HL475
| Starter volts | 12 |
|---|---|
| Firing order | 1-3-4-2 |
| Exhaust valve clearance | 0.018 inches [0.457 mm] |
| Emissions | Tier II |
| Starter power | 4 hp [3.0 kW] |
| Air cleaner | Dry |
| Rated RPM | 2300 |
| Power | 110 hp [82.0 kW] |
| Bore/Stroke | 4.19x5.00 inches [106 x 127 mm] |
| Oil capacity | 16.8 qts [15.9 L] |
| Oil change | 500 h |
| Displacement | 276 ci [4.5 L] |
| Torque RPM | 1500 |
| Coolant capacity | 14.4 qts [13.6 L] |
| Intake valve clearance | 0.014 inches [0.356 mm] |
| Torque | 346 lb-ft [469.2 Nm] |
| Idle RPM | 845-2465 |
Transmission Information of John Deere, 6420
Transmission variants 1
- Three gears (1-3) plus reverse (R) in four ranges (A-D). Directional, gear, and range changes are synchronized and may be shifting while moving by using the clutch. Optional creeper adds an additional nine forward and three reverse speeds for a total of 21-forward and 7-reverse. The SyncroPlus Power Reverser adds a fourth gear in the place of reverse, and includes a left-hand reverser lever, for 16 forward and reverse speeds.
| Transmission | John Deere SyncroPlus |
|---|---|
| Oil capacity | 55 qts [52.1 L] |
| Clutch | Wet disc |
| Type | Fully synchronized |
| Oil type | JD HyGard |
| Gears | 12 forward and 4 reverse |
Transmission variants 2
- Four gears (1-4) in four ranges (A-D) with reverser lever. Clutchless power shift between gears (1-4) and direction changes (power shuttle). Range shifts (A-D) are synchronized, and may be shifted while the tractor is moving by using the clutch. Optional creeper adds an additional twelve speeds for 28 forward and reverse. The PowrQuad uses a gear-shift lever while the PowrQuad Plus (cab tractors only) offers push-button gear shifting.
| Transmission | John Deere PowrQuad |
|---|---|
| Oil capacity | 51.8 qts [49.0 L] |
| Clutch | Wet disc |
| Type | Partial power shift |
| Oil type | JD HyGard |
| Gears | 16 forward and reverse |
Transmission variants 3
- Four gears (1-4) in six ranges (A-F) with reverser lever. Push-button power shifting between gears (1-4) and power shuttle directional shifting using the reverser lever. Ranges (A-F) may be shifted on the move by using the clutch. Optional AutoQuad offers automatic gear shifting to match load.
| Transmission | John Deere PowrQuad Plus |
|---|---|
| Oil capacity | 52.8 qts [50.0 L] |
| Clutch | Wet disc |
| Type | Partial power shift |
| Oil type | JD HyGard |
| Gears | 24 forward and reverse |
Transmission variants 4
- Continuously-variable transmission with built-in creeper and left-hand reverser lever. Speed-adjusting dial sets the maximum speed for each band. Setting maximum speed of Band 1 to less than 2 KPH (1.3 MPH) engages creeper mode. Only available on cab tractors.
| Transmission | John Deere IVT |
|---|---|
| Oil type | JD Hy-Gard |
| Oil capacity | 63.4 qts [60.0 L] |
| Type | Infinitely variable transmission |
| Type(optional) | JD Hy-Gard |
| Gears | Infinite forward and reverse |
- 12-speed fully synchronized
- Infinitely variable transmission
- 16-speed partial power shift
- 24-speed partial power shift
Mechanical Specs of John Deere, 6420
- Two- or four-wheel drive
- Two-post ROPS. ConfortGard Cab optional.
- Hydraulic wet disc brakes
| Steering | Hydrostatic power |
|---|
Power Information of John Deere, 6420
| Front PTO | Optional |
|---|---|
| Rear PTO | Independent |
| Rear PTO(optional) | 540@2143 (reversible) |
| Engine RPM | 540@2124 |
| Rear PTO Type | 540 |
| Front PTO Type | 1000 |
| Front PTO Type(optional) | 1000@2208 |
| Front PTO Type(optional) | 540/1000 |
| Engine RPM | 1000@2185 |
Hydraulics Specifications of John Deere, 6420
| Type | Closed center pressue flow compensated |
|---|---|
| Valves | 4 |
| Pressure | 2900 psi [200.0 bar] |
| Capacity | 13.7 gal [51.9 L] |
| Pump flow | 25 gpm [94.6 lpm] |
| Pump flow(optional) | 15.9 gal (IVT) [60.2 L] |
Three-Point Hitch of John Deere, 6420
| Rear Type | II |
|---|---|
| Rear lift | 4745 lbs [2152 kg] |
Electrical System of John Deere, 6420
| Battery AH | 110 |
|---|---|
| Ground | Negative |
| Ground(optional) | 150 |
| Ground(optional) | 115 |
| Charging system | Alternator |
| Charging system(optional) | 154 |
| Battery volts | 12 |
| Charging amps | 90 |
Where it sits
With 110 HP, the John Deere 6420 sits between 6410 (104 HP) and 6430 (115 HP) in John Deere's range. Its power puts it in the 70th percentile of 2000s models in our database (2822 machines).
Frequently asked questions
How much horsepower does the John Deere 6420 have?
The John Deere 6420 delivers 110 HP.
What years was the John Deere 6420 produced?
The John Deere 6420 was produced in 2002-2006.
What transmission does the John Deere 6420 use?
The John Deere 6420 uses a John Deere SyncroPlus transmission.
Is the John Deere 6420 4WD?
The John Deere 6420 is available in 2WD/4WD.