John Deere 3020: all source data
All 144 values recorded for this model, as the source lists them and in its units. The spec sheet shows the same data checked, typed and converted.
Overview
Production| Manufacturer | John Deere |
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| (no label) | Row-Crop tractor |
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| Factories | Waterloo, Iowa, USA |
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| Factories | Mexico |
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| Total built | 74,463 (Row Crop) |
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| Total built | 6,307 (Standard) |
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| Total built | 1,314 (Row-Crop Utility) |
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| Total built | 508 (High-Crop) |
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| Total built | 324 (Special Utility) |
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| Total built | 139 (Orchard) |
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| (no label) | Original price was $10,000 in 1972 |
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Engine| (no label) | John Deere 3.7L 4-cyl gasoline |
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| (no label) | John Deere 4.4L 4-cyl diesel |
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| (no label) | John Deere 3.7L 4-cyl LP gas |
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Transmission| (no label) | 8-speed partially synchronized |
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| (no label) | 8-speed full power shift |
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Power| Drawbar (claimed) | 57 hp | 42.5 kW |
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| PTO (claimed) | 70 hp (Syncro-Range) | 52.2 kW |
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| PTO (claimed) | 65 hp (Powershift) | 48.5 kW |
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| Drawbar (tested) | 63.13 hp | 47.1 kW |
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| PTO (tested) | 71.26 hp | 53.1 kW |
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Mechanical| (no label) | Two-wheel drive |
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| Final drives | planetary |
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| Differential lock | mechanical rear |
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| Steering | power assist |
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| (no label) | Differential hydraulic wet disc brakes |
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| (no label) | Open operator station. |
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Capacity| Fuel | 29 gal | 109.8 L |
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| LP-Gas Fuel (LP-Gas) | 33.6 gal | 127.2 L |
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| Syncro-Range Hydraulic system (Syncro-Range) | 8 gal | 30.3 L |
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| Power Shift Hydraulic system (Power Shift) | 11 gal | 41.6 L |
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Hydraulics| Type | closed center |
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| Syncro-Range Capacity (Syncro-Range) | 8 gal | 30.3 L |
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| Power Shift Capacity (Power Shift) | 11 gal | 41.6 L |
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| Pressure | 2100 psi | 144.8 bar |
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| Valves | 1 |
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| SCV flow | 6 gpm | 22.7 lpm |
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| Total flow | 14 gpm | 53.0 lpm |
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Pto| Rear PTO | independent |
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| Rear PTO Type | 540/1000 (1.375) |
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| Rear PTO Type | 1000 |
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| Engine RPM | 540@2100 |
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| Engine RPM | 1000@2100 |
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| Mid PTO Type | 1000 |
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Dimensions| Wheelbase | 90 inches | 228 cm |
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| Weight | 7139 to 7945 pounds |
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| Front tire | 6.00-16 |
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| Rear tire | 13.6-38 |
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Serial location| (no label) | Rear of tractor, above PTO. |
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Electrical| Ground | positive (12V) |
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| Ground | floating (24V) |
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| Charging system | generator |
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| Batteries | 1 (12V) |
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| Batteries | 2 (24V) |
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| Battery volts | 12 |
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Engine
Engine options| (no label) | John Deere 3.7L 4-cyl gasoline |
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| (no label) | John Deere 4.4L 4-cyl diesel |
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| (no label) | John Deere 3.7L 4-cyl LP gas |
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Engine detail| (no label) | John Deere |
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| (no label) | gasoline |
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| (no label) | 4-cylinder |
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| (no label) | liquid-cooled inline |
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| Displacement | 227 ci | 3.7 L |
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| Bore/Stroke | 4.25x4.00 inches | 108 x 102 mm |
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| Air cleaner | oil bath |
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| Compression | 7.5:1 |
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| Rated RPM | 2500 |
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| Operating RPM | 1500-2500 |
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| Firing order | 1-3-4-2 |
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| Starter volts | 12 |
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| Sparkplug gap | 0.025 inches | 0.635 mm |
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| Point gap | 0.022 inches | 0.559 mm |
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| Intake valve clearance | 0.015 inches | 0.381 mm |
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| Exhaust valve clearance | 0.028 inches | 0.711 mm |
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| (no label) | John Deere |
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| (no label) | diesel |
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| (no label) | 4-cylinder |
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| (no label) | liquid-cooled inline |
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| Displacement | 270 ci | 4.4 L |
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| Bore/Stroke | 4.25x4.75 inches | 108 x 121 mm |
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| Air cleaner | oil bath |
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| Pre-heating | ether injection |
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| Compression | 16.5:1 |
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| Rated RPM | 2500 |
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| Operating RPM | 1500-2500 |
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| Firing order | 1-3-4-2 |
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| Starter volts | 24 |
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| Oil capacity | 9 qts | 8.5 L |
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| Intake valve clearance | 0.018 inches | 0.457 mm |
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| Exhaust valve clearance | 0.018 inches | 0.457 mm |
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| (no label) | John Deere |
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| (no label) | LP gas |
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| (no label) | 4-cylinder |
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| (no label) | liquid-cooled inline |
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| Displacement | 227 ci | 3.7 L |
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| Bore/Stroke | 4.25x4.00 inches | 108 x 102 mm |
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| Air cleaner | oil bath |
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| Compression | 9.0:1 |
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| Rated RPM | 2500 |
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| Operating RPM | 1500-2500 |
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| Firing order | 1-3-4-2 |
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| Starter volts | 12 |
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| Oil capacity | 9 qts | 8.5 L |
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| Sparkplug gap | 0.015 inches | 0.381 mm |
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| Point gap | 0.022 inches | 0.559 mm |
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| Intake valve clearance | 0.015 inches | 0.381 mm |
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| Exhaust valve clearance | 0.028 inches | 0.711 mm |
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Engine oil| Oil capacity | 9 qts | 8.5 L |
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Transmission
Transmission options| (no label) | 8-speed partially synchronized |
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| (no label) | 8-speed full power shift |
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Transmission| Transmission | John Deere Syncro-Range |
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| Type | partially synchronized |
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| Gears | 8 forward and 2 reverse |
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| Clutch | dry disc |
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| Oil capacity | 32 qts | 30.3 L |
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| Transmission | John Deere Powershift |
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| Type | full power shift |
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| Gears | 8 forward and 4 reverse |
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| Clutch | hydraulic wet disc |
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| Oil capacity | 44 qts | 41.6 L |
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Dimensions
Tires| Ag front | 6.00-16 |
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| Ag front | 7.50-15 |
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| Ag front | 7.50-16 (single) |
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| Ag front | 11.00-12 (single) |
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| Ag rear | 13.6-38 |
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| Ag rear | 15.5-38 |
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Dimensions| Wheelbase | 90 inches | 228 cm |
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| Length | 138.5 inches | 351 cm |
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| Width | 89.625 inches | 227 cm |
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| Height (steering wheel) | 75.5 inches | 191 cm |
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| Height (exhaust) | 87.5 inches | 222 cm |
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| Bar rear axle (Bar) | 3.125 by 91 inches | 79 by 2311 mm |
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| Bar rear axle (Bar) | 3.125 by 104 inches | 79 by 2641 mm |
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| Bar rear axle (Bar) | 3.125 by 120 inches | 79 by 3048 mm |
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| Rear tread | 60 to 91 inches | 152 to 231 cm |
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| Rear tread | 60 to 97 inches (long axle) | 152 to 246 cm |
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| Rear tread | 60 to 113 inches (extra long axle) | 152 to 287 cm |
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Weight| Shipping | 7139 lbs (gas) | 3238 kg |
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| Shipping | 7300 lbs (LP-gas) | 3311 kg |
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| Shipping | 7342 lbs (diesel) | 3330 kg |
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| Operating | 7695 lbs (gas) | 3490 kg |
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| Operating | 7945 lbs (diesel) | 3603 kg |
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| Ballasted | 9585 lbs | 4347 kg |
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