John Deere 8420T Specs ( 2002-2005 )
Production
| Description | Agricultural Crawler tractor / Built in Waterloo, Iowa, USA |
|---|---|
| Manufacturer | John Deere |
Engine
| Engine type | John Deere 8.1L 6-cyl diesel |
|---|---|
| Bore/Stroke | 4.56x5.06 inches (116 x 129 mm) |
| Compression | 16.5:1 |
| Coolant capacity | 35.9 qts (34.0 L) |
| Description | John Deere / turbocharged diesel / 6-cylinder / liquid-cooled inline |
| Displacement | 496 ci (8.1 L) |
| Idle RPM | 900-2300 |
| Maximum Power (gross) | 314 hp (234.1 kW) |
| Maximum Power (net) | 300 hp (223.7 kW) |
| Operating RPM | 1500-2200 |
| Rated Power (gross) | 284 hp (211.8 kW) |
| Rated Power (net) | 270 hp (201.3 kW) |
| Rated RPM | 2200 |
| Starter volts | 12 |
| Oil capacity | 22.7 qts (21.5 L) |
| Oil change | 250 h |
| Drawbar (tested) | 205.84 hp (153.5 kW) |
| Engine (gross) | 284 hp (211.8 kW) |
| Engine (max) | 314 hp (234.1 kW) |
| Engine (net) | 270 hp (201.3 kW) |
| PTO (claimed) | 235 hp (175.2 kW) |
| PTO (tested) | 270.62 hp (201.8 kW) |
Transmission
| Gears | 16 forward and 4 reverse |
|---|---|
| Oil capacity | 260 qts (246.1 L) |
| Transmission | John Deere PowerShift |
| Transmission type | 16-speed full power shift |
| Type | full power shift |
Mechanical
| Cab | Cab standard. |
|---|---|
| Description | Hydraulic wet disc brakes |
| Drive | crawler |
| Steering | electro-hydraulic power |
Capacity
| Fuel | 130 gal (492.1 L) |
|---|---|
| Hydraulic system | 65 gal (246.0 L) |
Hydraulics
| Capacity | 65 gal (246.0 L) |
|---|---|
| Pressure | 2900 psi (200.0 bar) |
| Pump flow | 30 gpm (113.6 lpm) |
| Total flow | 33.5 gpm (126.8 lpm) |
| Type | closed center pressure flow compensated (PFC) |
| Valves | 5 |
Hitch
| Rear lift | 15,180 lbs (6885 kg) |
|---|---|
| Rear Type | III/IIIN |
PTO
| Rear PTO | independent |
|---|---|
| Rear PTO Type | 1000 (1-3/4) |
Electrical
| Batteries | 2 |
|---|---|
| Battery CCA | 925 |
| Battery volts | 12 |
| Charging amps | 150 |
| Charging system | alternator |
| Ground | negative |
Dimensions & Tires
| Clearance (drawbar) | 17.7 inches (44 cm) |
|---|---|
| Clearance (rear axle) | 21.7 inches (55 cm) |
| Height (cab) | 122.9 inches (312 cm) |
| Length | 207 inches (525 cm) |
| Wheelbase | 89 inches (226 cm) |
| Width | 103.7 inches (min) (263 cm) |
8420T Serial Numbers
| Location: | Rear of tractor |
|---|
Dimensions & Tracks
| Description | 24-inch tracks |
|---|---|
| Weight | 25950 to 26380 pounds |
| Wheelbase | 89 inches (226 cm) |
John Deere 8420T Tracks
| Area on ground | 4272 in² (2.8 m²) / 2848 in² (1.8 m²) / 3204 in² (2.1 m²) / 5340 in² (3.4 m²) |
|---|---|
| Length on ground | 89 inches (226 cm) / 89 inches (226 cm) / 89 inches (226 cm) / 89 inches (226 cm) |
| Width | 24 inches (60 cm) / 16 inches (40 cm) / 18 inches (45 cm) / 30 inches (76 cm) |
John Deere 8420T Weight
| Ballasted | 28,795 lbs (13061 kg) |
|---|---|
| Max capacity | 31,500 lbs (14288 kg) |
| Operating | 26,380 lbs (11965 kg) |
| Shipping | 25,950 lbs (11770 kg) |
OCED Tractor Test 1778
| Description | Diesel 16-speed crawlerApril 7 - 27, 2000Link: OCED Tractor Test 1778 file / PTO performance / Drawbar performance / Gear 10 used for power test. / Gear 3 used for pull test. |
|---|---|
| Fuel use | 14.6 gal/hour (55.3 l/hour) / 13.7 gal/hour (51.9 l/hour) / 13.7 gal/hour (51.9 l/hour) |
| Max power | 270.62 hp (201.8 kW) / 205.84 hp (153.5 kW) |
| Max pull | 27,233 lbs (12352 kg) |
| Power at rated engine speed | 236.75 hp (176.5 kW) |
References
| Description | 8020T/9020T Series published in 2003, by John Deere |
|---|
Speeds
| Description | Fourth reverse at 1600 RPM. |
|---|
Variants
| 8420 | wheeled tractor |
|---|---|
| 8420T | crawler |