The John Deere 8850 is a 4WD four-wheel drive tractor from the 8050 series. This tractor was manufactured by John Deere in Waterloo, Iowa, USA from 1982 to 1988. The JD 8850 is equipped with a 15.7 L (955.0 cu·in) V8 diesel engine and a partial power shift transmission with Perma-Clutch wet discs clutch and 16 forward and 6 reverse gears.
The John Deere 8850 four-wheel drive tractor used the John Deere engine. It is a 15.7 L, 15,658 cm2, (955.0 cu·in) turbocharged intercooled diesel engine with 140.0 mm (5.51 in) of the cylinder bore and 127.0 mm (5 in) of the piston stroke. The compression ratio rating is 15.5:1. This engine produced 375.2 PS (275.9 kW; 370.0 HP) at 2,100 rpm of output power.
The John Deere 8850 is equipped with hydrostatic power steering, power wet disc brakes, Sound-Gard cab, and 908.5 liters (240 US gal.; 199.8 Imp. gal) fuel tank.
John Deere 8850 Specifications
| General Specifications | |
| Model | John Deere 8850 |
| Length | 6,540 mm (257.5 in) |
| Width | – |
| Height | – |
| Wheel base | 3,370 mm (132.7 in) |
| Weight | 17,100 kg (37,699 lbs) |
| Fuel tank capacity | 908.5 liters (240 US gal.; 199.8 Imp. gal) |
| Battery | Three 12V, CCA: 625A |
| Cabin type | Sound-Gard cab with air-conditioning |
| Engine | |
| Engine model | John Deere |
| Engine type | Four-stroke, liquid-cooled, V |
| Cylinders | 8 |
| Fuel type | Diesel |
| Displacement | 15.7 L, 15,658 cm2, (955.0 cu·in) |
| Bore and stroke | 140.0 mm X 127.0 mm (5.51 in X 5 in) |
| Compression ratio | 15.5:1 |
| Horsepower | 375.2 PS (275.9 kW; 370.0 HP) at 2,100 rpm |
| Starter | Electric |
| Oil capacity: | 48.3 L (51 US. qt, 42.5 Imp. qt.) |
| Coolant capacity: | 73.8 L (78 US. qt, 64.9 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×4 articulated 4WD |
| Steering type | Hydrostatic power |
| Brakes | Power wet disc |
| Transmission model | Quad-Range |
| Transmission type | Partial power shift with Perma-Clutch wet discs clutch |
| Gears | 16 forward and 6 reverse |
| Speed | Forward: 32.5 kmh (20.2 mph) Reverse: 21.2 (13.2 mph) |
| Transmission oil capacity | 172.2 L (45.5 US. gal, 37.9 Imp. gal.) |
| Tires | |
| Front tires | Ag: 20.8-38, 20.8-42, 23.1-34, 24.5-32, 30.5L-32 |
| Rear tires | Ag: 20.8-38, 20.8-42, 23.1-34, 24.5-32, 30.5L-32 |
| Three-Point Hitch | |
| Caterogy | IV/IVN |
| Control type | – |
| Lift capacity (at ends) | 4,650 kg (10,255 lbs) |
| PTO (Power take-off shaft) | |
| Rear PTO type | Independent with hydraulic wet disc clutch (optional) |
| Rear PTO speed | 1,000 rpm |
| Hydraulic system | |
| Hydraulic type | Closed center constant-pressure |
| Hydraulic capacity | 172.2 L (181.96 US. qt, 151.51 Imp. qt.) |
| Valves | 3 to 4 |
| Pump flow | 44.0 gpm (166.6 lpm) |
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