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Siirry sivupalkkiinSiirry alaosaanJohn Deere 8450-8850








In the spring of 1982, the 50-series of chassis-controlled tractors was introduced. There were now three models: the 8450 with a 7.6 litre engine producing 225 hp, the 8650 with 10.1 litres and 290 hp, and the 8850 with a 15.6 litre V8 delivering 370 hp. All engines were turbocharged and intercooled and equipped with a viscous-drive fan. Injection pressure was higher than before, and the oil-change interval had been extended to 200 hours.
The new 8850 was noticeably larger than the smaller models and built more robustly—for example, its drive axles were 110 mm instead of 100 mm. John Deere’s own V8 engine featured a viscous fan and two intercoolers. Cab noise levels in the 50-series had been reduced to 76.5–78 dB. The monitoring system was enhanced with an Investigator II digital display.
(All speeds are in mph.)
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| Model | John Deere 8450 | John Deere 8650 | John Deere 8850 |
|---|---|---|---|
| Manufacturer name | John Deere | John Deere | John Deere |
| Imported to Finland | No | No | No |
| Years | 1982-89 | 1982-89 | 1982-89 |
| Engine model | 6076 | 6101 | - |
| Cyl/Turbo/Intercooler | 6TI | 6TI | V8TI |
| Displacement | 7636 cm³ | 10144 cm³ | 15649 cm³ |
| Bore x stroke | 115,8×120,7 mm | 130×127 mm | 140×127 mm |
| Rated power | 225/2100 hp DIN/rpm | 290/2100 hp DIN/rpm | 370/2100 hp DIN/rpm |
| Gears | 16+6 | 16+6 | 16+6 |
| Synchronized gears | 16+6 | 16+6 | 16+6 |
| Powershift gears | 2-step | 2-step | 2-step |
| Speeds in km/h | 3,5-34,1 | 3,4-32,5 | 3,4-32,5 |
| Lift controls | mech. | mech. | mech. |
| Lift capacity | 3860 kg | 3860 kg | 4540 kg |
| PTO speeds | 1000 | 1000 | 1000 |
| Brakes | wet disc | wet disc | wet disc |
| Steering | hydrost. | hydrost. | hydrost. |
| Turning circle m 4WD | 10.8 | 10.8 | 11.58 |
| Front tyres 4WD | 24.5-32 | 24.5-32 | 20.8-38 |
| Rear tyres 4WD | 24.5-32 | 24.5-32 | 20.8-38 |
| Weight 4WD | 12500 kg | 13300 kg | 17000 kg |
| Length (2WD/4WD) | 570 cm | 570 cm | 655 cm |
| Wheelbase (2WD/4WD) | 320 cm | 320 cm | 338 cm |
| Fuel tank | 810 l | 810 l | 810 l |
| Cab noise level | 77.5 dB | 76.5 dB | 78 dB |
| Solid cab | x | x | x |
| Air suspension seat | hydr. | hydr. | hydr. |
| Air conditioning | x | x | x |
| Trip computer | partial | partial | partial |
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