1 / 2
John Deere 4020
1963 – 1972Farm tractor
The John Deere 4020 is a farm tractor produced from 1963 to 1972. The available specifications cover 4 engine configurations and 2 transmission options; equipment could vary by production year and market.
＋ Compare ♡ Save ↗ Share
Specification section Overview Engines Transmissions Hydraulics PTO & Hitch Dimensions Tests Photos
✓ Row-crop field work Its row-crop configuration is intended for cultivation and work between planted rows.
✓ PTO and three-point implements Compatible with PTO-driven equipment and mounted implements through the rear three-point hitch.
✓ Field and transport duties Useful for moving loads, field operations and general transport around the farm.
Production Production years 1963–1972 Manufacturer John Deere Factories Waterloo, Iowa, USA Factories Mexico Total built 184,879 (total) Total built 8,123 (gas) Total built 8,445 (LP) Total built 168,311 (diesel) Total built 17,732 (standard) Row-Crop tractor Original price $10,345 in 1972
≈ $83,500 in 2026 dollarsInflation-adjusted estimate based on U.S. CPI-U. Not a current market value.
Power ratings Drawbar (tested) 83.79 hp (62.5 kW) PTO (tested) 95.83 hp (71.5 kW)
Engines John Deere 6.6L 6-cyl diesel John Deere 5.6L 6-cyl gasoline John Deere 5.9L 6-cyl gasoline John Deere 5.9L 6-cyl LP gas
View detailed engine specifications → Transmissions John Deere Syncro-Range 8 forward and 2 reverse · partially synchronized John Deere Power Shift 8 forward and 4 reverse · full power shift
View detailed transmission specifications → Mechanical Power steering Hydraulic wet disc brakes Open operator station. Cab optional. Drive 4x2 2WD : 4x4 HFWD 4WD * Front-wheel assist was optional after 1969. Differential lock mechanical rear (optional)
Capacities LP-gas Fuel 45 gal (170.3 L) Power Shift Hydraulic system 12 gal (45.4 L)
Hydraulics Type closed center Power Shift Capacity 12 gal (45.4 L) Total flow 18 gpm (early) 68.1 lpm Pressure 2250 psi 155.1 bar Valves 1 SCV flow 6 gpm (22.7 L/min)
View detailed hydraulics → PTO & Hitch Rear hitch category II Rear PTO independent Rear PTO speeds 540 / 1000 rpm Front PTO independent Front PTO speeds 1000 rpm
View detailed PTO & hitch specifications → Dimensions Row crop Wheelbase 97.5 in (247 cm) Standard Wheelbase 100.25 in (254 cm) Length 151 in (383 cm) Width 89.6 in (227 cm) Front tread 48.5 to 82.25 in (123 to 208 cm) Rear tread 60 to 91 in (152 to 231 cm) Rear tread 66 to 97 in (167 to 246 cm) (long axle) Rear tread 67 to 105 in (170 to 266 cm) (extra long axle) Operating 8,645 lb (3,921 kg) — gas syncro Operating 8,945 lb (4,057 kg) — diesel syncro Operating 9,240 lb (4,191 kg) — gas powershift Operating 9,560 lb (4,336 kg) — diesel powershift Ballasted 13980 lbs * Diesel Powershift with 18.4-34 rear tires with fluid plus front and rear cast iron weights. 6341 kg
View detailed dimensions → Dimensions Row crop Wheelbase 97.5 in (247 cm) Standard Wheelbase 100.25 in (254 cm) Length 151 in (383 cm) Width 89.6 in (227 cm) Regular rear axle 3.375 by 91 in 85 by 2311 mm Long rear axle 3.375 by 104 in 85 by 2641 mm Extra long rear axle 3.375 by 112 in 85 by 2844 mm Front tread 48.5 to 82.25 in (123 to 208 cm) Rear tread 60 to 91 in (152 to 231 cm) Rear tread 66 to 97 in (167 to 246 cm) (long axle) Rear tread 67 to 105 in (170 to 266 cm) (extra long axle)
View detailed dimensions → Dimensions · John Deere 4020 Weight Shipping 8,436 lb (3,826 kg) — diesel syncro Shipping 8,225 lb (3,730 kg) — gas syncro Shipping 8,319 lb (3,773 kg) — LP syncro Operating 8,645 lb (3,921 kg) — gas syncro Operating 8,945 lb (4,057 kg) — diesel syncro Operating 9,240 lb (4,191 kg) — gas powershift Operating 9,560 lb (4,336 kg) — diesel powershift Ballasted 13980 lbs * Diesel Powershift with 18.4-34 rear tires with fluid plus front and rear cast iron weights. 6341 kg
View detailed dimensions → Tires Agricultural front 6.00-16 Agricultural front 7.50-18 Agricultural rear 15.5-38 Agricultural rear 18.4-34
Electrical Ground positive Charging system alternator Charging amps 55 Battery volts 12 Batteries 2 Battery capacity (Ah) 75
Serial numbers Serial number plate on the rear of the 4020 transmission case. 1964 65000 1965 91000 1966 119000 1967 145660 1968 173982 1969 201000 1970 222160 1971 250000 1972 260791 Final 270288
Current model40201963–1972
Larger model42301973–1977
Larger model4320