John Deere 8420 Specifications
Engine Horsepower: 284 hp
Manufactured: 2002 to 2005
John Deere 8420 Summary
The John Deere 8420, produced from 2002 to 2005, belongs to the 8020 Series of row-crop tractors. It was manufactured in Waterloo, Iowa, USA. The tractor is available in two variants: the 8420 wheeled tractor and the 8420T crawler. It features a gross engine power of 284 hp, a net engine power of 270 hp, and a maximum engine power of 314 hp. The PTO claimed horsepower is 235 hp, with a tested PTO horsepower of 269.41 hp.
John Deere 8420 Horsepower, Weight, and Specifications:
Production
Who manufactures the John Deere 8420 and where?
- Manufacturer: John Deere
- Type: Row-Crop tractor
- Factory: Waterloo, Iowa, USA
Variants
What variants of the John Deere 8420 are available?
- 8420: Wheeled tractor
- 8420T: Crawler
Horsepower
What is the horsepower of the John Deere 8420?
- Engine (gross): 284 hp / 211.8 kW
- Engine (net): 270 hp / 201.3 kW
- Engine (max): 314 hp / 234.1 kW
- PTO (claimed): 235 hp / 175.2 kW
- Drawbar (tested): 207.49 hp / 154.7 kW
- PTO (tested): 269.41 hp / 200.9 kW
Engine
What type of engine does the John Deere 8420 have?
- John Deere 8.1L 6-cyl diesel
Mechanical
What are the mechanical features of the John Deere 8420?
- Chassis: 4x4 MFWD 4WD
- Steering: Hydrostatic power
- Brakes: Hydraulic wet disc
- Trailer brakes: Hydraulic (optional)
- Cab: Standard Cab
- Transmission: 16-speed full power shift
Capacity
What is the fluid capacity of the John Deere 8420?
- Fuel: 160 gal / 605.6 L
- Hydraulic system: 37 gal / 140.0 L
- ILS Hydraulic system: 39.6 gal / 149.9 L
- Front hubs: 3.6 qts / 3.4 L
- ILS Front hubs: 4.2 qts / 4.0 L
- Front diff.: 14.2 qts / 13.4 L
Hydraulics
What are the hydraulic specifications of the John Deere 8420?
- Type: Closed center pressure-flow compensated (PFC)
- Capacity: 37 gal / 140.0 L
- ILS Capacity: 39.6 gal / 149.9 L
- Pressure: 2900 psi / 200.0 bar
- Valves: 4 to 5
- SCV flow: 30 gpm / 113.6 lpm
- Total flow: 33.5 gpm / 126.8 lpm (Standard 45cc pump), 42.5 gpm / 160.9 lpm (Optional 57cc pump)
Tractor Hitch
What are the hitch specifications for the John Deere 8420?
- Rear Type: III/IIIN
- Rear lift: 15180 lbs / 6885 kg, 17300 lbs / 7847 kg (optional)
- Front Hitch: IIIN (optional)
- Front lift: 11000 lbs / 4989 kg
Power Take-off (PTO)
What are the PTO specifications of the John Deere 8420?
- Rear PTO: Independent
- Clutch: Hydraulic wet discs
- Rear RPM: 1000 (1.75), 540/1000 (1.375 optional)
- Engine RPM: 540@1975, 1000@2200
Dimensions & Tires
What are the dimensions and tire specifications of the John Deere 8420?
- Wheelbase: 118.9 inches / 302 cm, 117.7 inches / 298 cm (ILS)
- Weight: 21650 to 23780 pounds
- Front tire: 16.9R30
- Rear tire: 18.4R46
Electrical
What are the electrical specifications of the John Deere 8420?
- Ground: Negative
- Charging system: Alternator
- Charging amps: 150
- Batteries: 2
- Battery CCA: 925
- Battery volts: 12
Disclaimer: The information provided on this page may be less than 100% accurate. Always check the manufacturer's official manual.