John Deere 7820
Power
189 hp
Production
2004-2007
Engine
Turbocharged diesel, 6-cylinder
Transmission
PowrQuad Plus
Drive
2WD/4WD
From the same series:
Introduction
John Deere 7820 Row-Crop Tractor
The John Deere 7820 is a row-crop tractor produced in Waterloo, Iowa, between 2004 and 2007. It belongs to the 7020 series, positioned between the 7810 and 7830 models, serving as a versatile machine for heavy-duty agricultural operations.
Engine and Performance
The tractor is powered by an 8.1-liter, 6-cylinder turbocharged diesel engine. It delivers a rated net power of 182.4 hp (136 kW) and a maximum net power of 194.5 hp (145 kW) at 2100 rated RPM. The engine cooling is liquid-based, ensuring thermal stability during prolonged field work.
Transmission and Drivetrain
Multiple transmission configurations were available, including the 16-speed or 20-speed PowrQuad Plus, the AutoQuad Plus with load-matched shifting, and the AutoPowr IVT (infinitely variable transmission). All options feature a left-hand reverser and a hydraulic wet disc clutch to manage power transfer efficiently. The tractor is available in either two-wheel or four-wheel drive.
Hydraulics and Hitch
The machine utilizes a closed-center, pressure-flow compensated (PFC) hydraulic system operating at 3046 psi. It provides a pump flow of 32.2 gpm (121.9 lpm) and supports up to 7 valves. The rear hitch is a category 3/3N type, providing a lift capacity of 10,050 lbs (4558 kg) to accommodate a variety of heavy implements.
Power Take-Off (PTO)
The rear PTO is independent and offers 540/1000 RPM settings at 1950 engine RPM, with additional economy modes available at 1750 engine RPM. An optional independent front PTO is also available, providing 1000 RPM at 1950 engine RPM for increased operational flexibility.
Conclusion
The John Deere 7820 is a robust, high-horsepower row-crop tractor designed for professional agricultural environments. Its combination of diverse transmission options, high-capacity hydraulics, and multiple PTO configurations makes it suitable for a wide range of pulling and power-take-off driven tasks.
Production Information of John Deere, 7820
- Row-Crop tractor
- Built in Waterloo, Iowa, USA
| Manufacturer | John Deere |
|---|
Dimension and Tires Information of John Deere, 7820
| Wheelbase | 112.6 inches [286 cm] |
|---|---|
| Rear axle | 3.937 by 118 inches [99 by 2997 mm] |
| Rear axle | 3.937 by 110.5 inches [99 by 2806 mm] |
| Width | 96 inches (short axle) [243 cm] |
| 4WD Clearance (front axle) | 22.3 inches [56 cm] |
| 4WD Clearance (front axle)(optional) | 240.4 inches (with front weights) [610 cm] |
| Rear axle | 3.622 by 96 inches [91 by 2438 mm] |
| 4WD Clearance (drawbar) | 16.3 inches [41 cm] |
| 4WD Clearance (drawbar)(optional) | 118 inches (long axle) [299 cm] |
| Length | 212.2 inches [538 cm] |
| 2WD Clearance (front axle) | 25.6 inches [65 cm] |
| 2WD Clearance (drawbar) | 16.7 inches [42 cm] |
| Height (cab) | 125.4 inches [318 cm] |
| Rear axle | 3.937 by 96 inches [99 by 2438 mm] |
| Rear axle | 3.622 by 118 inches [91 by 2997 mm] |
| Rear axle | 3.622 by 110.5 inches [91 by 2806 mm] |
| Standard tires (ag) | Front: 11.00-16. Rear: 18.4R42 (2WD) |
|---|---|
| Standard tires (ag)(optional) | Front: 14.9R30. Rear: 18.4R42 (4WD) |
Engine Specifications of John Deere, 7820
- Liquid-cooled inline
- 6-cylinder
- Turbocharged diesel
| Coolant capacity | 33.8 qts [32.0 L] |
|---|---|
| Oil capacity | 25.4 qts [24.0 L] |
| Rated Power (gross) | 189.1 hp [141.0 kW] |
| Compression | 16.5:1 |
| Maximum Power (gross) | 199.8 hp [149.0 kW] |
| Displacement | 496 ci [8.1 L] |
| Rated Power (net) | 182.4 hp [136.0 kW] |
| Maximum Power (net) | 194.5 hp [145.0 kW] |
| Bore/Stroke | 4.56x5.06 inches [116 x 129 mm] |
| Starter volts | 12 |
| Idle RPM | 875-2200 |
| Rated RPM | 2100 |
Transmission Information of John Deere, 7820
Transmission variants 1
- Four power-shift gears (1-4) in four synchronized ranges (A-D) with left-hand reverser. Power shuttle shifting between forward and reverse.
| Transmission | PowrQuad Plus |
|---|---|
| Clutch | Hydraulic wet discs |
| Type | Partial power shift |
| Gears | 16 forward and reverse |
Transmission variants 2
- Four power-shift gears (1-4) in five synchronized ranges (A-E) with left-hand reverser. Power shuttle shifting between forward and reverse.
| Transmission | PowrQuad Plus |
|---|---|
| Gears | 20 forward and reverse |
| Clutch | Hydraulic wet discs |
Transmission variants 3
- Four power-shift gears (1-4) in five synchronized ranges (A-E) with left-hand reverser. Power shuttle shifting between forward and reverse. AutoQuad mode offers automatic load-matched gear shifting with standard and economy-shift settings.
| Transmission | AutoQuad Plus |
|---|---|
| Gears | 20 forward and reverse |
| Clutch | Hydraulic wet discs |
Transmission variants 4
- Hydro-mechanical IVT controlled via right-hand speed lever and left-hand reverser lever. Knob on the speed lever adjusts the set speeds for two ranges. Minimum speed of 50 meters per hour (164 feet per hour). The IVT was available on the 7820 only when equipped with four-wheel drive.
| Transmission | AutoPowr IVT |
|---|---|
| Type | Infinitely variable transmission |
| Gears | Infinite forward and reverse |
- 16-speed partial power shift
- 20-speed
- Infinitely variable transmission
Mechanical Specs of John Deere, 7820
- Two- or four-wheel drive
- Cab standard.
- Power steering
- Hydraulic wet disc brakes
Power Information of John Deere, 7820
| Rear PTO | Independent |
|---|---|
| Engine RPM | 540@1950 |
| Engine RPM(optional) | 1000 (1.75) |
| Clutch | Hydraulic wet discs |
| Clutch(optional) | 1000E@1750 |
| Clutch(optional) | 1000@1950 |
| Rear PTO Type | 540/1000 (1.375) |
| Front PTO Type | 1000 (1.75) |
| Front PTO(optional) | Independent |
Hydraulics Specifications of John Deere, 7820
| Type | Closed-center pressure-flow compensated (PFC) |
|---|---|
| Pump flow | 32.2 gpm [121.9 lpm] |
| Valves | 7 |
| Capacity | 28.5 gal [107.9 L] |
| SCV flow | 30 gpm [113.6 lpm] |
| Pressure | 3046 psi [210.0 bar] |
Three-Point Hitch of John Deere, 7820
| Rear Type | 3/3N |
|---|---|
| Rear lift | 10050 lbs [4558 kg] |
| Rear lift(optional) | 14000 lbs [6350 kg] |
Electrical System of John Deere, 7820
| Ground | Negative |
|---|---|
| Battery CCA | 925 |
| Batteries | 2 |
| Charging system | Alternator |
| Battery volts | 12 |
| Charging amps | 150 |
Where it sits
With 189 HP, the John Deere 7820 sits between 7810 (175 HP) and 7830 (205 HP) in John Deere's range. Its power puts it in the 86th percentile of 2000s models in our database (2822 machines).
Frequently asked questions
How much horsepower does the John Deere 7820 have?
The John Deere 7820 delivers 189 HP.
What years was the John Deere 7820 produced?
The John Deere 7820 was produced in 2004-2007.
What engine does the John Deere 7820 have?
The John Deere 7820 is powered by a Turbocharged diesel, 6-cylinder engine.
What transmission does the John Deere 7820 use?
The John Deere 7820 uses a PowrQuad Plus transmission.
Is the John Deere 7820 4WD?
The John Deere 7820 is available in 2WD/4WD.