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Home / Farm Tractors / John Deere Tractors / JD 4020

John Deere 4020 Tractor

The John Deere 4020 is a 4x2 New Generation series row-crop tractor. This model was manufactured from 1963 to 1972. The components of JD 4020 driveline system: The John Deere 6-cylinder gasoline or diesel engine, and 8x4 Syncro Range partially synchronized transmission or 8-speed full power shift transmission. Max. forward speed - 20.5 mph (33 kph), max. reverse speed - 5.2 mph (8.4 kph).

The closed center hydraulic system includes a piston pump with fluid flow rate of 18 gpm (68.1 lpm). The main relief pressure is 2250 psi (155 bar). The rear lift capacity is 3790 lbs (1720 kg).

The John Deere 4020 tractor fitted with standard 7.5x18 front tires and 18.4x34 rear tires, or row-crop 6.00x16 front tires and 15.5x38 rear tires. The wheelbase is 100.3" (2540 mm) for standard models and 97.5" (2470 mm) for row-crop models. The John Deere 4020 is compatible with JD 148 front end loader with a maximum lift height of 126" (3200 mm), and JD 158 front end loader with a maximum lift height of 156" (3960 mm).

Diesel Engine
Engine Model John Deere
Engine Type 4 cycle, 6-cylinder diesel
Number of Cylinders Six
Displacement, cu in (L) 404 (6.60)
Engine Bore, in (mm) 4.25 (108.0)
Engine Stroke, in (mm) 4.78 (121.0)
Aspiration Natural
Rated Engine Power, hp (kW) 101.0 (74.8)
Rated Engine Speed, rpm 2200
Idle Speed, rpm 600-2500
Firing Order 1-5-3-6-2-4
Compression 16.5:1
Air Cleaner Oil bath
Intake valve clearance (Intake and Exhaust), in (mm) 0.018 (0.457)
Fuel Tank Capacity, gal (L) 34.0 (129.0)
Electrical System Rating, Volts 24
Charging System Alternator

Gasoline Engine
Engine Model John Deere
Engine Type 4 cycle, 6-cylinder 12-valve gasoline
Number of Cylinders Six
Displacement, cu in (L) 362 (5.90)
Engine Bore, in (mm) 4.25 (108.0)
Engine Stroke, in (mm) 4.25 (108.0)
Rated Engine Power, hp (kW) 101.0 (74.8)
Rated Engine Speed, rpm 2200
Idle Speed, rpm 650-2500
Compression 7.5:1
Firing Order 1-5-3-6-2-4
Fuel Tank Capacity, gal (L) 34.0 (129.0)
Oil capacity, qts (L) 8.0 (7.6)
Coolant Capacity, qts (L) 24.4 (23.0)
Electrical System Rating, Volts 12
Charging System Generator

Power Take-Off
PTO Horsepower, hp (kW) 95.0 (71.5)
Rear PTO Operational Type (Std) Independent
Front PTO Operational Type (Opt) Independent
Rear PTO Speed, rpm 540
Front PTO Speed, rpm 1000
Rear PTO / Engine Speed, rpm 540/1900
Front PTO / Engine Speed, rpm 1000/1900


Standard Transmission
Transmission Type Syncro Range
Gearbox Type 8F/2R, Partially synchronized
Number of Forward Gears 8
Number of Reverse Gears 2
Oil capacity, qts (L) 40.1 (37.9)
Maximum Forward Speed, mph (kph) 19.2 (30.9)
Maximum Reverse Speed, mph (kph) 5.2 (8.4)

Optional Transmission
Transmission Type PowerShift
Gearbox Type 8F/4R, Full power shift
Number of Forward Gears 8
Number of Reverse Gears 4
Oil capacity, qts (L) 56.3 (53.1)
Maximum Forward Speed, mph (kph) 20.5 (33.0)
Maximum Reverse Speed, mph (kph) 4.9 (7.9)

Wheels and Tires
Drive Wheels 2WD 4x2
Steering Configuration Front Steer
Steering System Power
Service Brake Hydraulic wet disc
Front Tire Size (Std) 7.5x18
Rear Tire Size (Std) 18.4x34
Front Tire Size (Row Crop) 6.0x16
Rear Tire Size (Row Crop) 15.5x38
Front Track Width, in (mm) 48.5-82.3 (1230-2080)
Rear Track Width, in (mm) 60-91 (1520-2310)

Hydraulic System
Hydraulic System Type Closed center
Implement Pump Flow, gpm (Lpm) 18.0 (68.1)
Selective Control Valves Flow, gpm (Lpm) 6.0 (22.5)
Hydraulic Pressure, Bar (psi) 155 (2250)
Hydraulic Capacity (Syncro Range), gal (L) 10.0 (38.0)
Hydraulic Capacity (PowerShift), gal (L) 12.0 (45.5)
Number of Standard Remote Valves 1/3
3-Point Hitch Category 2
Rear Lift Capacity, lb (kg) 3790 (1720)

Dimensions and Weight
Wheelbase (Std), in (mm) 100.3 (2540)
Wheelbase (Row Crop), in (mm) 97.5 (2470)
Overall Width, in (mm) 89.6 (2270)
Length, in (mm) 151 (3830)
Shipping Weight (Diesel), lb (kg) 8440 (3825)
Shipping Weight (Gasoline), lb (kg) 8225 (3730)
Operating Weight (Diesel with Syncro Range), lb (kg) 8945 (4060)
Operating Weight (Diesel with PowerShift), lb (kg) 9560 (4335)
Operating Weight (Gasoline with Syncro Range), lb (kg) 8645 (3920)
Operating Weight (Gasoline with PowerShift), lb (kg) 9240 (4190)

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