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
ENGINE DETAIL 1
Description
John Deere diesel 6-cylinder 12-valve liquid-cooled inline/Oil capacity on most 4020 diesels increased from 8 to 12 quarts starting with the 1969 model year, tractor serial number 201,000. High-crop diesel tractors retained the 8-quart capacity throughout the production run. Tractors fitted with after-market turbochargers, and early tractors with replacement oil pans, may also have the higher oil capacity
Displacement
404ci / 6.6L
Bore/Stroke
4.25x4.75inches / 108x 121mm
Compression
16.5:1
Rated RPM
2200
Idle RPM
600-2500
Operating RPM
1500-2200
Firing order
1-5-3-6-2-4
Starter volts
24
Coolant capacity
24qts / 22.7L
Intake valve clearance
0.018inches / 0.457mm
Exhaust valve clearance
0.018inches / 0.457mm
ENGINE OIL 1
Early Oil capacity
8qts / 7.6L
Late Oil capacity
12qts / 11.4L
ENGINE DETAIL 2
Description
John Deere gasoline 6-cylinder 12-valve liquid-cooled inline, Original gasoline and LP-gas engine, used through the 1965 model year
Displacement
340ci / 5.6L
Bore/Stroke
4.25x4.00inches / 108x 102mm
Compression
7.5:1
Rated RPM
2200
Idle RPM
650-2500
Operating RPM
1500-2200
Firing order
1-5-3-6-2-4
Starter volts
12
Coolant capacity
24qts / 22.7L
Sparkplug gap
0.025inches / 0.635mm
Point gap
0.016inches / 0.406mm
Intake valve clearance
0.015inches / 0.381mm
Exhaust valve clearance
0.028inches / 0.711mm
ENGINE OIL 2
Oil capacity
9qts / 8.5L
ENGINE DETAIL 3
Description
John Deere gasoline 6-cylinder 12-valve liquid-cooled inline/The larger, 362 ci engine became available in 1966, replacing 340 ci engine
Displacement
362ci / 5.9L
Bore/Stroke
4.25x4.25inches / 108x 108mm
Compression
7.5:1
Rated RPM
2200
Firing order
1-5-3-6-2-4
Starter volts
12
Oil capacity
8qts / 7.6L
Coolant capacity
24qts / 22.7L
ENGINE DETAIL 4
Description
John Deere LP gas 6-cylinder 12-valve liquid-cooled inline
Displacement
362ci / 5.9L
Bore/Stroke
4.25x4.25inches / 108x 108mm
Compression
9.0:1
Rated RPM
2200
Firing order
1-5-3-6-2-4
Starter volts
12
Oil capacity
8qts / 7.6L
Coolant capacity
24qts / 22.7L
JOHN DEERE 4020 ENGINES
Description
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
TRANSMISSIONS OVERVIEW
Description
8-speed partially synchronized 8-speed full power shift
TRANSMISSION 1
Transmission
John Deere Syncro-Range
Type
partially synchronized
Gears
8 forward and 2 reverse
Oil capacity
52qts / 49.2L 303 Special
Description
Synchro-Range requires the tractor to be stopped and clutch depressed to select one of four shift stations. Once a station is selected the tractor can be shifted on the move between the two forward gears (and single reverse in stations 1 and 2) by using the clutch
SPEEDS 1
Description
Row-crop tractor with 15.5-38 rear tires
TRANSMISSION 2
Transmission
John Deere Power Shift
Type
full power shift
Gears
8 forward and 4 reverse
Oil capacity
68qts / 64.4L 303 Special
Description
Power Shift allows shift-on-the-move between gears without clutching
SPEEDS 2
Description
Row-crop tractor with 15.5-38 rear tires
JOHN DEERE 4020 TRANSMISSIONS
Description
8-speed partially synchronized 8-speed full power shift
MECHANICAL
Drive
4x2 2WD/4x4 HFWD 4WD *Front-wheel assist was optional after 1969
Differential lock
mechanical rear OptOptional
Description
Power steering Hydraulic wet disc brakes Open operator station. Cab optional
CAPACITY
Gasoline Fuel
34gal / 128.7L
Diesel Fuel
34gal / 128.7L
LP-gas Fuel
45gal / 170.3L
Synchro-Range Hydraulic system
10gal / 37.9L
Power Shift Hydraulic system
12gal / 45.4L
HYDRAULICS
Type
closed center
Synchro-Range Capacity
10gal / 37.9L
Power Shift Capacity
12gal / 45.4L
Pressure
2250psi / 155.1bar
Valve
1
SCV flow
6gpm / 22.7lpm
Total flow
18gpm (early) / 68.1lpm
TRACTOR HITCH
Rear Type
II
Rear lift
3790lbs / 1719kg
POWER TAKE-OFF (PTO)
Rear PTO
independent
Rear RPM
540/1000/1000
Engine RPM
1000@1900
Front PTO
independent
Front RPM
1000
JOHN DEERE 4020 TIRES
Ag front
6.00-16 (row crop) / 7.50-18 (standard)
Ag rear
15.5-38 (row crop) / 18.4-34 (standard)
DIMENSIONS & TIRES
Row crop Wheelbase
97.5inches / 247cm
Standard Wheelbase
100.25inches / 254cm
Weight
8225 to 9560 pounds
Front tire
6.00-16
Rear tire
15.5-38
4020 SERIAL NUMBERS
1969
201000
1972
260791
Final
270288
4020 SERIAL LOCATION
Description
Serial number plate on the rear of the 4020 transmission case
The 4020 model tractor is part of John Deere's 9R line of tractors. The 4020 is a Row-Crop Tractors type, that is used mostly in Agriculture Tractors. The 4020 tractor is equipped by a engine. This configuration improves usability in the real world.