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Tractor · 2004Unverified

John Deere 7820

Name: John Deere 7820
Brand: John Deere

John Deere 7820 — Row-Crop tractor · 189 hp. Reference specifications; pending source verification.

The John Deere 7820 is a tractor with a rating of approximately 189 hp, positioning it at the more powerful end of its class. Production of this model took place from 2004 to 2007. The tractor is equipped with a 6-cylinder turbocharged diesel liquid-cooled engine, paired with four-wheel drive and a powershift transmission. Its operating weight is listed as 16002 to 17603 pounds.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

189 hp

Max power

130.0 kW

Weight

16002 to 17603 pounds

Catalogue coverage

Variants represented

Richest spec table

116 rows

Recorded power

189 hp

Transmissions

16-speed partial power shift

Production years

2004-2007

Verified variants

1 linked source document displayed

Hover a source tag to verify

Overview

ManufacturerJohn DeereReference

Row-Crop tractorReference

Built in Waterloo, Iowa, USAReference

Two- or four-wheel driveReference

Power steeringReference

Hydraulic wet disc brakesReference

Cab standard.Reference

Engine

John Deere 8.1L 6-cyl dieselReference

Engine (gross)141.0 kWReference

Engine (net)136.0 kWReference

Engine (max)149.0 kWReference

Drawbar (tested)107.0 kWReference

John DeereReference

turbocharged dieselReference

6-cylinderReference

liquid-cooled inlineReference

Displacement8.1 LReference

Bore/Stroke116 x 129 mmReference

Rated Power (net)136.0 kWReference

Rated Power (gross)141.0 kWReference

Maximum Power (net)145.0 kWReference

Maximum Power (gross)149.0 kWReference

Compression16.5:1Reference

Rated RPM2100Reference

Idle RPM875-2200Reference

Starter volts12Reference

Oil capacity24.0 LReference

Coolant capacity32.0 LReference

Max power130.0 kWReference

Power at rated engine speed116.7 kWReference

Max power107.0 kWReference

Transmission

16-speed partial power shiftReference

20-speedReference

infinitely variable transmissionReference

TransmissionPowrQuad PlusReference

Typepartial power shiftReference

Gears16 forward and reverseReference

Clutchhydraulic wet discsReference

Four power-shift gears (1-4) in four synchronized ranges (A-D) with left-hand reverser. Power shuttle shifting between forward and reverse.Reference

Gears20 forward and reverseReference

Four power-shift gears (1-4) in five synchronized ranges (A-E) with left-hand reverser. Power shuttle shifting between forward and reverse.Reference

TransmissionAutoQuad PlusReference

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.Reference

TransmissionAutoPowr IVTReference

Typeinfinitely variable transmissionReference

Gearsinfinite forward and reverseReference

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.Reference

PTO & Hydraulics

PTO (claimed)115.6 kWReference

PTO (tested)130.0 kWReference

Hydraulic system107.9 LReference

Typeclosed-center pressure-flow compensated (PFC)Reference

Capacity107.9 LReference

Pressure210.0 barReference

Valves7Reference

Pump flow121.9 lpmReference

SCV flow113.6 lpmReference

Rear Type3/3NReference

Rear lift4558 kgReference

Rear lift6350 kgReference

Rear PTOindependentReference

Clutchhydraulic wet discsReference

Rear PTO Type540/1000 (1.375)Reference

Rear PTO Type1000 (1.75)Reference

Engine RPM540@1950Reference

Engine RPM1000@1950Reference

Engine RPM540E@1750Reference

Engine RPM1000E@1750Reference

Front PTOindependentReference

Front PTO Type1000 (1.75)Reference

Power at rated PTO speed127.5 kWReference

Capacities

Fuel391.7 LReference

Fuel358.4 LReference

Front axle14.4 LReference

Front hubs1.9 LReference

HD Front hubs3.8 LReference

Dimensions

Wheelbase286 cmReference

Weight16002 to 17603 poundsReference

Front tire11.00-16Reference

Rear tire18.4R42 (2WD)Reference

Standard tires (ag)Front: 11.00-16. Rear: 18.4R42 (2WD)Reference

Standard tires (ag)Front: 14.9R30. Rear: 18.4R42 (4WD)Reference

Length538 cmReference

Length610 cmReference

Width243 cmReference

Width299 cmReference

Height (cab)318 cmReference

2WD Clearance (front axle)65 cmReference

4WD Clearance (front axle)56 cmReference

2WD Clearance (drawbar)42 cmReference

4WD Clearance (drawbar)41 cmReference

Rear axle91 by 2438 mmReference

Rear axle91 by 2806 mmReference

Rear axle91 by 2997 mmReference

Rear axle99 by 2438 mmReference

Rear axle99 by 2806 mmReference

Rear axle99 by 2997 mmReference

2WD Shipping7258 kgReference

4WD Shipping7757 kgReference

4WD IVT Shipping7984 kgReference

Operating7815 kgReference

John Deere 7820 attachments

front-end loaderReference

7820 Serial Number Location

On tractor frame, front right-hand side.Reference

Electrical

GroundnegativeReference

Charging systemalternatorReference

Charging amps150Reference

Batteries2Reference

Battery CCA925Reference

Battery volts12Reference

Test results

496 diesel AutoQuad-Plus 4WDMarch 31 - April 21, 2004Link: OCED Tractor Test 1834 fileReference

PTO performanceReference

Fuel use36.3 l/hourReference

Fuel use35.6 l/hourReference

Drawbar performanceReference

Fuel use36.0 l/hourReference

Max pull9813 kgReference

Speeds

With Group 46 rear tires. Reverse speeds are about 4% faster than corresponding forward speed.Reference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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