john deere 8420
 | 2002 - 2005
8020 SeriesRow-Crop tractor | 2002 - 2005 | 8020 Series | Row-Crop tractor |
|---|---|---|---|---|
2002 - 2005 | ||||
8020 Series | ||||
Row-Crop tractor | ||||
2002 - 2005 | |
|---|---|
8020 Series | |
Row-Crop tractor |
Production | |
|---|---|
Manufacturer | John Deere |
Row-Crop tractor | |
Built in Waterloo, Iowa, USA | |
Variants | |
|---|---|
8420 | wheeled tractor |
8420T | crawler |
John Deere 8420 Engine | |
|---|---|
John Deere 8.1L 6-cyl diesel | |
Engine details ...  |
John Deere 8420 Transmission | |
|---|---|
16-speed full power shift | |
Transmission details ...  |
John Deere 8420 Power | |
|---|---|
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 |
Performance test details ...  | |
Mechanical | |
|---|---|
Four-wheel drive | |
Steering | hydrostatic power |
Hydraulic wet disc brakes | |
Trailer brakes | hydraulic OptOptional |
Cab standard. | |
Photos | |
|---|---|
 | |
John Deere 8420 photos...  |
Capacity | |
|---|---|
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 | |
|---|---|
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*With standard 45cc pump
126.8 lpm |
| 42.5 gpm*Optional 57cc pump
160.9 lpm |
Tractor hitch | |
|---|---|
Rear Type | III/IIIN |
Rear lift | 15180 lbs
6885 kg |
| 17300 lbsOptOptional
7847 kg |
Front Hitch | IIIN OptOptional |
Front lift | 11000 lbs
4989 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Clutch | hydraulic wet discs |
Rear PTO Type | 1000 (1.75) |
| 540/1000 (1.375 optional) |
Engine RPM | 540@1975 |
| 1000@2200 |
Dimensions & Tires | |
|---|---|
Wheelbase | 118.9 inches
302 cm |
| 117.7 inches (ILS)
298 cm |
Weight | 21650 to 23780 pounds |
Front tire | 16.9R30 |
Rear tire | 18.4R46 |
Full dimensions and tires ...  | |
8420 Serial Numbers | |
|---|---|
Location: | Serial number plate on rear of tractor. |
2002 | 1001 |
2003 | 10001 |
2004 | 20001 |
2005 | 30001 |
FAQ: How to read a serial number table. | |
Electrical | |
|---|---|
Ground | negative |
Charging system | alternator |
Charging amps | 150 |
Batteries | 2 |
Battery CCA | 925 |
Battery volts | 12 |
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