John Deere 7820

Name: John Deere 7820
Brand: John Deere

Power

189 hp

Production

2004-2007

Engine

Turbocharged diesel, 6-cylinder

Transmission

PowrQuad Plus

Drive

2WD/4WD

140–200 HP 2000s

From the same series:

7720

7920

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."

Introduction

Production Information of John Deere, 7820

The production information of the tractor (7820) includes details about its manufacturing.

Row-Crop tractor

Built in Waterloo, Iowa, USA


Manufacturer	John Deere

Dimension and Tires Information of John Deere, 7820

This section sums up the dimension and tires information of the tractor.


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]
	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]
	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)
	Front: 14.9R30. Rear: 18.4R42 (4WD)

Engine Specifications of John Deere, 7820

Get the specifications for the engine and if different options are available.

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, 7820Y

Discover all variants of transmission available for this tractor model.

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, 7820Y

This section summarizes all mechanical information such as the brake system and other specifications.

Two- or four-wheel drive

Cab standard.

Power steering

Hydraulic wet disc brakes

Power Information of John Deere, 7820Y

Discover the power specifications and options available for this tractor model but also PTO (Power Take-off) information.


	540E@1750
Rear PTO	Independent
Engine RPM	540@1950
	1000 (1.75)
Clutch	Hydraulic wet discs
	1000E@1750
	1000@1950
Rear PTO Type	540/1000 (1.375)
Front PTO Type	1000 (1.75)
Front PTO	Independent OptOptional

Hydraulics Specifications of John Deere, 7820

Hydraulic system type, pressure, pump flow and valves.


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

Hitch category and rear/front lift capacity.


Rear Type	3/3N
Rear lift	10050 lbs [4558 kg]
	14000 lbsOptOptional [6350 kg]

Electrical System of John Deere, 7820

Battery voltage, charging system and ground.


Ground	Negative
Battery CCA	925
Batteries	2
Charging system	Alternator
Battery volts	12
Charging amps	150

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.

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