Tractor · 1956Unverified
John Deere 820
John Deere 820 — Two-Cylinder 20 Series · 67 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
67 hp
Max power
50.1 kW
Weight
7850 to 8600 pounds
Hover a source tag to verify
Overview
ManufacturerJohn DeereReference
Standard-tread tractorReference
Built in Waterloo, Iowa, USAReference
Total built7,080Reference
The early model 820 "Green Dash" tractors were little-changed from the previous model 80. in 1957, for the 1958 production year, the improved 820 "Black Dash" tractors appeared with a number of modifications and more horsepower.Reference
Two-wheel driveReference
Final drivesbull gearReference
SteeringmanualReference
Steeringpower optionalReference
Mechanical expanding shoe brakesReference
Open operator station. Steel cab optional.Reference
Engine
John Deere 7.7L 2-cyl dieselReference
Fuel tank123.0 LReference
Aux. fuel0.9 LReference
Belt (claimed)50.0 kWReference
Belt (claimed)56.4 kWReference
Plows5-6Reference
Drawbar (tested)50.1 kWReference
Belt (tested)54.3 kWReference
John DeereReference
dieselReference
2-cylinderReference
liquid-cooledReference
Displacement7.7 LReference
Bore/Stroke156 x 203 mmReference
Air cleaneroil bathReference
Rated RPM1125Reference
Firing order1-2Reference
Starter typegasoline pony motorReference
Coolant capacity7.6 LReference
Belt power (max)54.3 kWReference
Max power50.1 kWReference
Transmission
6-speed unsynchronized gearReference
ManufacturerJohn DeereReference
Typeunsynchronized gearReference
Gears6 forward and 1 reverseReference
Clutch9-inch dry discReference
Optional low-speed first gear was 1.75 MPH.Reference
PTO & Hydraulics
Typeopen centerReference
Valves1Reference
Rear PTOindependentReference
Rear PTO Type540 (1.375)Reference
Dimensions
Wheelbase216 cmReference
Weight7850 to 8600 poundsReference
Front tire7.50-18Reference
Rear tire15-34Reference
Ag front7.50-18Reference
Ag rear15-34Reference
Ag rear14-34Reference
Ag rear18-26Reference
Length362 cmReference
Width201 cmReference
Height205 cmReference
Front tread143 to 160 cmReference
Rear tread163/173 cmReference
Shipping3560 kgReference
Operating3900 kgReference
Ballasted5443 kgReference
820 Serial Numbers
19568000000 (green-dash)Reference
19578200565 (green-dash)Reference
19578203100 (black-dash)Reference
19588203850 (black-dash)Reference
Final8207080 (black-dash)Reference
FAQ: How to read a serial number table.Reference
Capacities
Diameter30 cmReference
Width22 cmReference
RPM1125Reference
Speed1097.28 meters/minReference
Electrical
GroundpositiveReference
Charging systemgeneratorReference
Battery volts6Reference
Test results
Diesel 6-speed 2WDOctober 14 - 18, 1957Link: Nebraska Tractor Test 632 fileReference
Belt fuel use (max)15.9 l/hourReference
Drawbar performanceReference
Gear 3 used for power test.Reference
Max pull3931 kgReference
Gear 1 used for pull test.Reference
Speeds
With 15-34 rear tires.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.