John Deere 4620

The John Deere 4620 is a tractor produced by John Deere. It is equipped with a 404 ci 6.6 L engine. The rated power output is 135.76 hp 101.2 kW. Transmission: John Deere Power Shift. Drive type: 4x2 2WD. Operating weight: 12980 to 14930 pounds.

Overview

	1971 - 1972 Row-Crop tractor
1971 - 1972
Row-Crop tractor

Production
Manufacturer	John Deere
Row-Crop tractor
Built in Waterloo, Iowa, USA
Total built	6,928
	5,045 (Syncro-Range)
	1,883 (Power Shift)
Original price was $15,000 in 1972

John Deere 4620 Engine
John Deere 6.6L 6-cyl diesel
Engine details ...

John Deere 4620 Power
PTO (claimed)	135 hp 100.7 kW
Drawbar (tested)	115.75 hp 86.3 kW
PTO (tested)	135.76 hp 101.2 kW
Performance test details ...

Mechanical
Drive	4x2 2WD
	4x4 HFWD 4WD
Final drives	planetary
Differential lock	hydro-mechanical rear
Steering	hydrostatic power
Hydraulic wet disc brakes
Open operator station. Optional two-post Roll-Gard ROPS and canopy. Cab optional.

Capacity
Fuel	50 gal 189.2 L
Hydraulic system	16 gal (Syncro) 60.6 L
	18 gal (Powershift) 68.1 L

Hydraulics
Type	closed center
Capacity	16 gal (Syncro) 60.6 L
	18 gal (Powershift) 68.1 L

Tractor hitch
Rear Type	III/II

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	1000
Engine RPM	1000@1900

Dimensions & Tires
Wheelbase	106.5 inches 270 cm
Weight	12980 to 14930 pounds
Front tire	11.00-16
Rear tire	20.8-38
Full dimensions and tires ...

Electrical
Ground	negative
Charging system	alternator
Batteries	2
Battery volts	6

References
The John Deere 20 Series New Generation Tractors by Benjamin Hain
Operator's Manual 4620 Tractor (OM-R48272) published in 1982

Engine

Engine Detail — 404 ci / 6.6 L Diesel

Manufacturer	John Deere
Configuration	intercooled turbocharged diesel, 6-cylinder, liquid-cooled
Displacement	404 ci 6.6 L
Bore/Stroke	4.25x4.75 inches 108 x 121 mm
Air cleaner	dry with safety element
Compression	16.4:1
Rated RPM	2200
Idle RPM	800-2200
Operating RPM	1500-2200
Firing order	1-5-3-6-2-4
Starter volts	12
Oil capacity	16 qts 15.1 L
Coolant capacity	28 qts 26.5 L

Transmission

Transmission options
8-speed partially synchronized
8-speed full power shift

Transmission — John Deere Syncro-Range

Transmission	John Deere Syncro-Range
Type	partially synchronized
Gears	8 forward and 2 reverse
Clutch	14.75-inch dry disc
Oil capacity	64 qts 60.6 L

Transmission — John Deere Power Shift

Transmission	John Deere Power Shift
Type	full power shift
Gears	8 forward and 4 reverse
Clutch	hydraulic wet discs
Oil capacity	72 qts 68.1 L
With 20.8-38 rear tires.

Dimensions

John Deere 4620 Tires
Ag front	11.00-16
Ag rear	20.8-38
Ag front	9.50-20
	10.00-16
	14L-16A
	14.9-24 (4WD)
Ag rear	18.4-38
	24.5-32
	12.4-42 (duals)
	15.5-38 (duals)
	16.9-38 (duals)
	18.4-38 (duals)
	20.8-38 (duals)

Dimensions
Wheelbase	106.5 inches 270 cm
Length	170.7 inches 433 cm
Width	95.8 inches 243 cm
	108 inches (long axle) 274 cm
	118 inches (extra long axle) 299 cm
Height	106 inches 269 cm
Height (steering wheel)	87 inches 220 cm
Clearance (front axle)	23.8 inches 60 cm
Clearance (rear axle)	31.1 inches 78 cm
	29.4 inches (rear housing) 74 cm
Clearance (drawbar)	17.8 inches 45 cm
Front tread	56 to 84.8 inches 142 to 215 cm
Front tread	64 to 88 inches 162 to 223 cm (wide axle)
Front tread	72 to 88 inches 182 to 223 cm (4WD)
Rear tread	70 to 100 inches 177 to 254 cm (cast wheels)
Rear tread	60 to 107.5 inches 152 to 273 cm (offset wheels)
Rear tread	70 to 112 inches 177 to 284 cm (long axle)
Rear tread	60 to 120 inches 152 to 304 cm (offset long axle)
Rear tread	70 to 122 inches 177 to 309 cm (extra long axle)
Rear tread	60 to 130 inches 152 to 330 cm (cast extra long axle)

John Deere 4620 Weight
Shipping	12980 lbs 5887 kg
Operating	14930 lbs 6772 kg
Ballasted	18640 lbs 8455 kg

Tests

Tractor Tests
NTTL 1064: diesel PowerShift 2WD
NTTL 1073: diesel SyncroRange 2WD

Nebraska Tractor Test 1064
Diesel PowerShift 2WD April 20 - May 4, 1971 Link: Nebraska Tractor Test 1064 file
PTO performance
Power at rated engine speed	135.62 hp 101.1 kW
Fuel use	9.2 gal/hour 34.8 l/hour
Power at rated PTO speed	130.79 hp 97.5 kW
Fuel use	8.3 gal/hour 31.4 l/hour
Drawbar performance
Max power	110.92 hp 82.7 kW
Fuel use	9.1 gal/hour 34.4 l/hour
Gear 4 used for power test.
Max pull	14,471 lbs 6564 kg
Gear 2 used for pull test.

Nebraska Tractor Test 1073
Diesel SyncroRange 2WD June 16 - 22, 1971 Link: Nebraska Tractor Test 1073 file
PTO performance
Power at rated engine speed	135.76 hp 101.2 kW
Fuel use	9.2 gal/hour 34.8 l/hour
Power at rated PTO speed	130.27 hp 97.1 kW
Fuel use	8.4 gal/hour 31.8 l/hour
Drawbar performance
Max power	115.75 hp 86.3 kW
Fuel use	9.1 gal/hour 34.4 l/hour
Gear 4 used for power test.
Max pull	13,916 lbs 6312 kg
Gear 2 used for pull test.