John Deere 7420
Power
135 hp
Production
2003-2007
Engine
Turbocharged diesel, 6-cylinder
Transmission
John Deere PowrQuad
Drive
2WD/4WD
From the same series:
Introduction
John Deere 7420 Row-Crop Tractor
The John Deere 7420 is a row-crop tractor manufactured between 2003 and 2007 at the John Deere facility in Waterloo, Iowa, USA. Designed for versatile agricultural operations, this model is recognized for its robust engine performance and multiple transmission configurations.
Engine and Performance
The tractor is powered by the John Deere PowerTech 6068HF475, a 6.8-liter, 6-cylinder turbocharged diesel engine. It generates 135 horsepower at a rated speed of 2100 RPM and produces 450 lb-ft of torque at 1500 RPM. The engine cooling system features a liquid-cooled design, and it is built to operate within a range of 1300 to 2100 RPM for optimal efficiency.
Transmission and Drivetrain
Operators can choose between three transmission types: the 16-speed PowrQuad, the 24-speed AutoQuad, or the Infinitely Variable Transmission (IVT). All versions incorporate an electro-hydraulic clutch. The machine is available in either two-wheel or four-wheel drive, featuring inboard planetary final drives and hydraulic wet disc brakes for reliable stopping performance.
Hydraulics and Hitch
Equipped with a closed-center pressure and flow-compensated (PFC) hydraulic system, the tractor provides a pump flow of 26.7 gpm. It features four valves as standard. The rear hitch is a Category II type with a standard lift capacity of 7450 lbs, which can be increased to 8700 lbs with an optional upgrade.
Operator Environment
The tractor comes standard with the ComfortGard cab, which includes factory-installed air conditioning to ensure operator comfort during extended work hours. Steering is assisted by a power steering system, contributing to maneuverability in row-crop environments.
Conclusion
The John Deere 7420 serves as a capable, mid-range row-crop tractor suitable for a variety of field tasks, offering sufficient hydraulic capacity and flexible transmission options to accommodate diverse agricultural implement requirements.
Production Information of John Deere, 7420
- Row-Crop tractor
- Built in Waterloo, Iowa, USA
| Manufacturer | John Deere |
|---|
Dimension and Tires Information of John Deere, 7420
| 2WD Wheelbase | 112.8 inches [286 cm] |
|---|---|
| Rear tread | 60 to 119.2 inches [152 to 302 cm (110.5-inch axle)] |
| Width | 96 inches [243 cm] |
| Rack-and-pinion rear axle | 3.4 by 96 inches [86 by 2438 mm] |
| Rack-and-pinion rear axle | 3.4 by 110.5 inches [86 by 2806 mm] |
| Front tread | 59.4 to 83.4 inches [150 to 211 cm (4WD)] |
| Front tread | 59.5 to 87.5 inches [151 to 222 cm (2WD)] |
| Height | 114.1 inches [289 cm] |
| 4WD Wheelbase | 104.3 inches [264 cm] |
| Flanged rear axle | 65.5 inch length [1663 mm] |
| Length | 203.3 inches [516 cm] |
| 4WD Clearance (front axle) | 20.5 inches [52 cm] |
| Rear tread | 60 to 104.6 inches [152 to 265 cm (96-inch axle)] |
| Rear tread | 76 to 96 inches [193 to 243 cm (long flange)] |
| Rear tread | 60 to 88 inches [152 to 223 cm (flange axle)] |
Minimum width with standard axle.
| Ag front | 14.9R28 |
|---|---|
| Ag rear | 18.4R38 |
Engine Specifications of John Deere, 7420
- John Deere PowerTech 6068HF475
- Liquid-cooled
- Turbocharged diesel
- 6-cylinder
| Starter volts | 12 |
|---|---|
| Firing order | 1-5-3-6-2-4 |
| Air cleaner | Dual paper elements |
| Starter power | 4.1 hp [3.1 kW] |
| Rated RPM | 2100 |
| Idle RPM | 850-2250 |
| Compression | 17:1 |
| Displacement | 414 ci [6.8 L] |
| Power | 135 hp [100.7 kW] |
| Bore/Stroke | 4.19x5.00 inches [106 x 127 mm] |
| Torque RPM | 1500 |
| Oil capacity | 22.2 qts [21.0 L] |
| Coolant capacity | 29.6 qts [28.0 L] |
| Torque | 450 lb-ft [610.2 Nm] |
| Operating RPM | 1300-2100 |
Transmission Information of John Deere, 7420
Transmission variants 1
- Four power shift speeds (1-4) in four ranges (A-D) with left-hand reverser.
| Transmission | John Deere PowrQuad |
|---|---|
| Oil capacity | 59.2 qts [56.0 L] |
| Type | Partial power shift |
| Gears | 16 forward and reverse |
Transmission variants 2
| Transmission | AutoQuad |
|---|---|
| Gears | 24 forward and reverse |
Transmission variants 3
- Available with MFWD only
| Transmission | Infinitely Variable Transmission (IVT) |
|---|---|
| Gears | Infinite forward and reverse |
- 16-speed partial power shift
- 24-speed
Mechanical Specs of John Deere, 7420
- Two- or four-wheel drive
- Hydraulic wet disc brakes
- Power steering
- ComfortGard Cab standard with air-conditioning.
| Final drives | Inboard planetary |
|---|---|
| Differential lock | Electro-hydraulic rear |
Power Information of John Deere, 7420
| Rear PTO | Independent |
|---|---|
| Front PTO Type | 1000 |
| Front PTO | Independent |
| Clutch | Electro-hydraulic |
| Rear PTO Type | 540/1000 (1.375) |
Optional. Field conversion kit.
Hydraulics Specifications of John Deere, 7420
| Type | Closed-center PFC |
|---|---|
| Valves | 4 |
| Pump flow | 26.7 gpm [101.1 lpm] |
Three-Point Hitch of John Deere, 7420
| Rear Type | II |
|---|---|
| Rear lift | 7450 lbs [3379 kg] |
| Rear lift(optional) | 8700 lbs (optional) [3946 kg] |
Electrical System of John Deere, 7420
| Ground | Negative |
|---|---|
| Battery CCA | 850 |
| Battery CCA(optional) | 150 |
| Charging system | Alternator |
| Battery volts | 12 |
| Charging amps | 115 |
Where it sits
With 135 HP, the John Deere 7420 sits between 7320 (125 HP) and 7520 (150 HP) in John Deere's range. Its power puts it in the 78th percentile of 2000s models in our database (2822 machines).
Frequently asked questions
How much horsepower does the John Deere 7420 have?
The John Deere 7420 delivers 135 HP.
What years was the John Deere 7420 produced?
The John Deere 7420 was produced in 2003-2007.
What engine does the John Deere 7420 have?
The John Deere 7420 is powered by a Turbocharged diesel, 6-cylinder engine.
What transmission does the John Deere 7420 use?
The John Deere 7420 uses a John Deere PowrQuad transmission.
Is the John Deere 7420 4WD?
The John Deere 7420 is available in 2WD/4WD.