John Deere 8420 VS New Holland T8.390 specs comparison

John Deere 8420
General InfosMake | John Deere |
Model | 8420 |
Country | United states |
Production | From 2002 Until 2005 |
Price | - |
Tractor type | Row Crop tractor |
Fuel | diesel |
Service repair manual | John Deere 8420 Manual |
Dimensions, sizes and tires
AG front tires | 16.9R30 |
AG rear tires | 18.4R46 |
Lawn front tires | - |
Lawn rear tires | - |
Indus front tires | - |
Indus rear tires | - |
Weight | 21,650 lbs or 9820 kg |
Length | 211.9 inches [538 cm] |
Width | - |
Height | 122.2 inches [310 cm] |
Wheelbase | 118.9 inches [302 cm] |
Ground clearance | - |
Turning radius | - |
Rear tread size | - |
Front tread size | 60 to 80 inches |
Turning radius | - |
Horsepower and engin specs
Engine capacity | 496 ci or 8.1 L |
Cylinders | 6 cylinders |
Engine power | 314 hp or 234.1 kW |
Engine RPM | 2200 (rpm) |
Torque | - | Torque RPM | - |
Fuel type | diesel |
Fuel injection | electronic high-pressure common rail (HPCR) |
Fuel tank size | 160 gal or 605.6 L |
Oil capacity | 28.5 qts or 27.0 L |
Oil change | 250 h |
Starter motor | - |
Starter volts | 12 V |
Parts And Accessories | John Deere 8420 Parts |
Batteries number | 2 |
Batteries voltage | 12 V |
Battries Amps | - |
Cold Amps | 925 |
Ground force | negative |
Charging system | alternator |
Charging Volts | - |
Charging Amps | 150 amps |
Trans system | John Deere PowerShift |
Trans type | full power shift |
Trans gears | 16 forward and 4 reverse |
Clutch system | hydraulic wet disc |
Wheel drive | 4x4 MFWD 4WD |
Final drive | - |
Steering | hydrostatic power |
Braking system | hydraulic wet disc |
Cabin type | Cab standard |
Differentiel lock | - |
System | closed center pressure-flow compensated |
Valves | 4 to 5 |
Pump flow | - |
SVC flow | 30 gpm or 113.6 lpm |
Steering flow | - |
Tank capacity | 37 gal or 140.0 L |
Hydraulic pressure | 2900 psi or 200.0 bar |
Max flow | 33.5 gpm or 126.8 lpm |
Drawbar type | - |
Claimed power | - |
Drawbar horsepower | 207.49 hp or 154.7 kW |
Fuel consumption | 13.6 gal/hour or 51.5 l/hour |
Pulling power | 29,964 lbs or 13591 kg |
Claimed power | 235 hp or 175.2 kW |
Real power | 235.45 hp or 175.6 kW |
Engine @RPM | 540@1975 (rpm) |
PTO Clutch | hydraulic wet discs |
Rear PTO | independent |
Rear PTO RPM | 1000 (rpm) |
Front PTO | - |
Front PTO RPM | - |
Mid PTO | - |
Mid PTO RPM | - |
Fuel consumption | 13.7 gal/hour or 51.9 l/hour |
Hitch system | - |
Rear hitch | III/IIIN |
Rear hitch lift | 15180 lbs or 6885 kg |
Front hitch | IIIN |
Front hitch lift | 11000 lbs or 4989 kg |

New Holland T8.390
General InfosMake | New Holland |
Model | T8.390 |
Country | United states |
Production | From 2011 Until 2014 |
Price | - |
Tractor type | Row Crop tractor |
Fuel | diesel |
Service repair manual | New Holland T8.390 Manual |
Dimensions, sizes and tires
AG front tires | - |
AG rear tires | - |
Lawn front tires | - |
Lawn rear tires | - |
Indus front tires | - |
Indus rear tires | - |
Weight | 24,480 lbs or 11104 kg |
Length | - |
Width | - |
Height | - |
Wheelbase | 135.8 inches [344 cm] |
Ground clearance | - |
Turning radius | - |
Rear tread size | 60 to 88 inches |
Front tread size | - |
Turning radius | - |
Horsepower and engin specs
Engine capacity | 531 ci or 8.7 L |
Cylinders | 6 cylinders 24 valves |
Engine power | 374 hp or 278.9 kW |
Engine RPM | 2000 (rpm) |
Torque | - | Torque RPM | - |
Fuel type | diesel |
Fuel injection | - |
Fuel tank size | 168 gal or 635.9 L |
Oil capacity | - |
Oil change | - |
Starter motor | - |
Starter volts | - |
Parts And Accessories | New Holland T8.390 Parts |
Batteries number | 2 |
Batteries voltage | 12 V |
Battries Amps | - |
Cold Amps | - |
Ground force | negative |
Charging system | alternator |
Charging Volts | 12 V |
Charging Amps | 200 amps |
Trans system | - |
Trans type | creeper |
Trans gears | 23 forward and 6 reverse |
Clutch system | - |
Wheel drive | 4x4 MFWD 4WD |
Final drive | - |
Steering | power |
Braking system | hydraulic wet disc |
Cabin type | Cab standard |
Differentiel lock | - |
System | closed center load sensing |
Valves | 4 to 6 |
Pump flow | 35 gpm or 132.5 lpm |
SVC flow | - |
Steering flow | - |
Tank capacity | - |
Hydraulic pressure | - |
Max flow | 42.5 gpm or 160.9 lpm |
Drawbar type | - |
Claimed power | - |
Drawbar horsepower | 259.61 hp or 193.6 kW |
Fuel consumption | 15.7 gal/hour or 59.4 l/hour |
Pulling power | 37,986 lbs or 17230 kg |
Claimed power | 290 hp or 216.3 kW |
Real power | 332.40 hp or 247.9 kW |
Engine @RPM | - |
PTO Clutch | - |
Rear PTO | independent |
Rear PTO RPM | 1000 (rpm) |
Front PTO | optional |
Front PTO RPM | 1000 (rpm) |
Mid PTO | - |
Mid PTO RPM | - |
Fuel consumption | 16.7 gal/hour or 63.2 l/hour |
Hitch system | - |
Rear hitch | 4N/3 |
Rear hitch lift | 18,900 lbs or 8573 kg |
Front hitch | optional |
Front hitch lift | - |
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Useful links and guides ....
- John Deere provided us with the latest version of its 8420 service repair manual
- Find All mechanical and electrical parts and accessories of John Deere 8420 farm-tractor here
- Get your New Holland T8.390 manual book version
- Cabine, electrical And mechanical parts for New Holland T8.390 farm-tractor here