John Deere 7420

The John Deere 7420 is a tractor produced by John Deere. It is equipped with a 414 ci 6.8 L engine. The listed engine power is Diesel (listed): 135 hp / 100.7 kW; Diesel (listed): 4.1 hp / 3.1 kW. Transmission: Infinitely Variable Transmission (IVT). Operating weight: 12890 to 13280 pounds.

Overview

	2003 - 2007 7020 SeriesRow-Crop tractor 7020 Series Row-Crop tractor

Production
Manufacturer	John Deere
Row-Crop tractor
Built in Waterloo, Iowa, USA

Variants
7420	row-crop
7420HC	high-crop

John Deere 7420 Engine
John Deere 6.8L 6-cyl diesel
Fuel tank	54.7 gal 207.0 L
Engine details ...

John Deere 7420 Power
Engine	135 hp 100.7 kW
PTO (claimed)	115 hp 85.8 kW
Drawbar (tested)	102.86 hp 76.7 kW
PTO (tested)	127.38 hp 95.0 kW
Performance test details ...

Mechanical
Two- or four-wheel drive
Final drives	inboard planetary
Differential lock	electro-hydraulic rear
Power steering
Hydraulic wet disc brakes
ComfortGard Cab standard with air-conditioning.

Hydraulics
Type	closed-center PFC
Valves	4
Pump flow	26.7 gpm 101.1 lpm

Tractor hitch
Rear Type	II
Rear lift	7450 lbs 3379 kg
	8700 lbs (optional) 3946 kg

Power Take-off (PTO)
Rear PTO	independent
Clutch	electro-hydraulic
Rear PTO Type	540/1000 (1.375)
Front PTO	independent *Optional. Field conversion kit.
Front PTO Type	1000

Dimensions & Tires
2WD Wheelbase	112.8 inches 286 cm
4WD Wheelbase	104.3 inches 264 cm
Weight	12890 to 13280 pounds
Front tire	14.9R28
Rear tire	18.4R38
Full dimensions and tires ...

Electrical
Ground	negative
Charging system	alternator
Charging amps	115
	150
Battery CCA	850
Battery volts	12

References
Get around-the-clock performance with the new 7020 Series Tractors published in 2003, by John Deere
High-Crop and High-Clearance Tractors published in 2004, by John Deere

Engine

Engine Detail — 414 ci / 6.8 L Diesel

Manufacturer	John Deere PowerTech 6068HF475
Configuration	turbocharged diesel, 6-cylinder, liquid-cooled
Displacement	414 ci 6.8 L
Bore/Stroke	4.19x5.00 inches 106 x 127 mm
Power	135 hp 100.7 kW
Air cleaner	dual paper elements
Compression	17:1
Rated RPM	2100
Idle RPM	850-2250
Operating RPM	1300-2100
Torque	450 lb-ft 610.2 Nm
Torque RPM	1500
Firing order	1-5-3-6-2-4
Starter volts	12
Starter power	4.1 hp 3.1 kW
Oil capacity	22.2 qts 21.0 L
Coolant capacity	29.6 qts 28.0 L

Transmission

Transmission options
16-speed partial power shift
24-speed

Transmission — John Deere PowrQuad

Transmission	John Deere PowrQuad
Type	partial power shift
Gears	16 forward and reverse
Oil capacity	59.2 qts 56.0 L
Four power shift speeds (1-4) in four ranges (A-D) with left-hand reverser.
With 20.8-38 rear tires.

Transmission — AutoQuad

Transmission	AutoQuad
Gears	24 forward and reverse

Transmission — Infinitely Variable Transmission (IVT)

Transmission	Infinitely Variable Transmission (IVT)
Gears	infinite forward and reverse
available with MFWD only

Dimensions

John Deere 7420 Tires
Ag front	14.9R28
Ag rear	18.4R38

Dimensions
2WD Wheelbase	112.8 inches 286 cm
4WD Wheelbase	104.3 inches 264 cm
Length	203.3 inches 516 cm
Width	96 inches*Minimum width with standard axle. 243 cm
Height	114.1 inches 289 cm
4WD Clearance (front axle)	20.5 inches 52 cm
Flanged rear axle	65.5 inch length 1663 mm
Rack-and-pinion rear axle	3.4 by 96 inches 86 by 2438 mm
Rack-and-pinion rear axle	3.4 by 110.5 inches 86 by 2806 mm
Front tread	59.5 to 87.5 inches 151 to 222 cm (2WD)
Front tread	59.4 to 83.4 inches 150 to 211 cm (4WD)
Rear tread	60 to 88 inches 152 to 223 cm (flange axle)
Rear tread	76 to 96 inches 193 to 243 cm (long flange)
Rear tread	60 to 104.6 inches 152 to 265 cm (96-inch axle)
Rear tread	60 to 119.2 inches 152 to 302 cm (110.5-inch axle)

John Deere 7420 Weight
Shipping	12,890 lbs 5846 kg
Operating	13,280 lbs 6023 kg
Ballasted	15,655 lbs 7101 kg
Max capacity	22,035 lbs 9995 kg
Max Drawbar	4,955 lbs 2247 kg
Max front axle	9,035 lbs 4098 kg
	15,100 lbs (with loader) 6849 kg
Max rear axle	17,185 lbs 7795 kg

Tests

OCED Tractor Test 1817
Diesel PowrQuad 4WD May 20 - June 2, 2003 Link: OCED Tractor Test 1817 file
PTO performance
Max power	127.38 hp 95.0 kW
Fuel use	6.8 gal/hour 25.7 l/hour
Power at rated engine speed	116.56 hp 86.9 kW
Fuel use	6.7 gal/hour 25.4 l/hour
Drawbar performance
Max power	102.86 hp 76.7 kW
Fuel use	6.7 gal/hour 25.4 l/hour