Tractor · 2004Unverified
John Deere 7820
John Deere 7820 — Row-Crop tractor · 189 hp. Reference specifications; pending source verification.
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
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.