| John Deere 8420T | VS | All other Farm Tractors |
| Production | |||||
|---|---|---|---|---|---|
| Model Year | 2002 | ||||
| Production Manufacturer | John Deere | vs | 15.9% Farm Tractors have John Deere |
||
| Factory | Waterloo, Iowa, Usa | ||||
| Capacity | |||||
|---|---|---|---|---|---|
| Capacity Fuel |
130 gal (59.65 gal higher than average)
|
vs |
70.35 gal
|
||
| Hydraulic system |
65 gal (45.58 gal higher than average)
|
vs |
19.42 gal
|
||
| Power Take-off (PTO) | |||||
|---|---|---|---|---|---|
| Rear RPMs |
1000 (391.75 higher than average)
|
vs |
608.25
|
||
| Rear PTO | Independent | vs | 78.6% Farm Tractors have independent |
||
| Mechanical | |||||
|---|---|---|---|---|---|
| Mechanical Steering | Electro-hydraulic Power | vs | 1.8% Farm Tractors have electro-hydraulic power |
||
| Chassis | Crawler | vs | 3.9% Farm Tractors have crawler |
||
| Brakes | Hydraulic Wet Disc | vs | 24.3% Farm Tractors have hydraulic wet disc |
||
| Cab | Cab Standard. | ||||
| Transmission | |||||
|---|---|---|---|---|---|
| Transmission Type | Full Power Shift | vs | 15.4% Farm Tractors have full power shift |
||
| Transmission Oil capacity |
260 qts (201.22 qts higher than average)
|
vs |
58.78 qts
|
||
| Transmission Transmission | John Deere Powershift | ||||
| Transmission Gears |
16 forward (0.87 forward higher than average)
|
vs |
15.13 forward
|
||
| Transmission Speeds | Fourth Reverse At 1600 Rpm. | ||||
| Dimensions | |||||
|---|---|---|---|---|---|
| Dimensions Width |
103.7 inches (31.52 inches higher than average)
|
vs |
72.18 inches
|
||
| Wheelbase |
89 inches (5.33 inches lower than average)
|
vs |
94.33 inches
|
||
| Weight (operating) |
26380 lbs (26362 lbs higher than average)
|
vs |
18,724 lbs
|
||
| Length |
207 inches (45.04 inches higher than average)
|
vs |
161.96 inches
|
||
| Height (cab) |
122.9 inches (13.36 inches higher than average)
|
vs |
109.54 inches
|
||
| Clearance (drawbar) |
17.7 inches (0.82 inches higher than average)
|
vs |
16.88 inches
|
||
| Weight (ballasted) |
28795 lbs (28772 lbs higher than average)
|
vs |
23,578 lbs
|
||
| Weight (max capacity) |
31500 lbs (31451 lbs higher than average)
|
vs |
49,610 lbs
|
||
| Clearance (rear axle) |
21.7 inches (4.32 inches lower than average)
|
vs |
26.02 inches
|
||
| Hydraulics | |||||
|---|---|---|---|---|---|
| Hydraulics Type | Closed Center Pressure-flow Compensated (pfc) | ||||
| Hydraulics Valves |
5 (2.36 higher than average)
|
vs |
2.64
|
||
| Pressure |
2900 psi (2898 psi higher than average)
|
vs |
2,737 psi
|
||
| Pump flow |
30 gpm (10.54 gpm higher than average)
|
vs |
19.46 gpm
|
||
| Capacity (cu. ft.) |
65 gal (45.58 gal higher than average)
|
vs |
19.42 gal
|
||
| Total flow |
33.5 gpm (8.85 gpm higher than average)
|
vs |
24.65 gpm
|
||
| 3-Point Hitch | |||||
|---|---|---|---|---|---|
| Rear Type | III/IIIN | ||||
| Rear lift |
15180 lbs (15169 lbs higher than average)
|
vs |
11,787 lbs
|
||
| Power | |||||
|---|---|---|---|---|---|
| PTO (claimed) |
235 hp (122.32 hp higher than average)
|
vs |
112.68 hp
|
||
| PTO (tested) |
270.62 hp (93.37 hp higher than average)
|
vs |
177.25 hp
|
||
| Drawbar (tested) |
205.84 hp (41.89 hp higher than average)
|
vs |
163.95 hp
|
||
| Electrical | |||||
|---|---|---|---|---|---|
| Ground | Negative | ||||
| Charging system | Alternator | ||||
| Charging amps |
150 (38.88 higher than average)
|
vs |
111.12
|
||
| Tires | |||||
|---|---|---|---|---|---|
| Ag front |
16 or (8.1 or lower than average)
|
vs |
24.10 or
|
||
| Ag rear |
16 or (8.79 or lower than average)
|
vs |
24.79 or
|
||
| Battery | |||||
|---|---|---|---|---|---|
| Volts |
12 (equals average)
|
vs |
12.00
|
||
| Number |
2 (0.35 higher than average)
|
vs |
1.65
|
||
| Cold-cranking amps |
925 (86.48 higher than average)
|
vs |
838.52
|
||
| Variants | |||||
|---|---|---|---|---|---|
| 8420 | Wheeled Tractor | ||||
| 8420T | Crawler | ||||