John Deere 8850

1982 - 1988

8050 Series

Four-wheel Drive (4WD) tractor

Manufacturer

John Deere

Four-wheel Drive (4WD) tractor

Built in Waterloo, Iowa, USA

Original price was $122,694 in 1983

The model 8850 was the largest of the four-wheel drive tractors that John Deere unveiled in 1982. Its big V-8 was a departure from John Deere's usual engine design. The 8850 had an available full-power PTO and Load-and-Depth control three-point hitch.

John Deere 15.7L 8-cyl diesel

16-speed partial power shift

Engine

370 hp 275.9 kW

PTO (claimed)

300 hp 223.7 kW

Drawbar (tested)

269.77 hp 201.2 kW

PTO (tested)

303.99 hp 226.7 kW

Four-wheel drive

Final drives

inboard compound planetary

Differential lock

electro-hydraulic front and rear

Articulated power steering

Power wet disc brakes

Sound-Gard cab with air-conditioning

Fuel

240 gal 908.4 L

Hydraulic system

45.5 gal 172.2 L

Type

closed center constant-pressure

Capacity

45.5 gal 172.2 L

Valves

3 to 4

Pump flow

44 gpm 166.5 lpm

Rear Type

4/4N

Control

lower-link draft sensing

Rear lift

10,250 lbs 4649 kg

Rear PTO

independent OptOptional

Clutch

hydraulic wet disc

Rear PTO Type

1000 (1.75)

Wheelbase

133 inches 337 cm

Weight

37480 to 37700 pounds

Front tire

20.8-38

Rear tire

20.8-38

Ground

negative

Charging system

alternator

Charging amps

110

Batteries

3

Battery CCA

625

Battery volts

12

Loaders, Spreaders and Blades published in 1984, by John Deere

4-Wheel-Drive Tractors published in 1981, by John Deere

4-Wheel-Drive Tractors published in 1983, by John Deere

4-Wheel-Drive Tractors published in 1986, by John Deere

8450, 8650, 8850 Competition published in 1982, by John Deere

Agricultural Price List published in 1983, by John Deere

Manufacturer

John Deere

Configuration

intercooled turbocharged diesel, 8-cylinder, liquid-cooled V8

Displacement

955 ci 15.7 L

Bore/Stroke

5.51x5.00 inches 140 x 127 mm

Power

370 hp 275.9 kW

Compression

15.5:1

Rated RPM

2100

Starter volts

12

Oil capacity

51 qts 48.3 L

Coolant capacity

78 qts 73.8 L

Transmission

Quad-Range

Type

partial power shift

Gears

16 forward and 6 reverse

Clutch

Perma-Clutch hydraulic wet discs

Oil capacity

182 qts 172.2 L

Tractor must be stopped to select one of four ranges. Clutchless power shift between speeds 1-2 and 3-4 in range. A synchronized shift (using clutch) can be made between 2 and 3 in range.

20.8-38 tires

Ag front

20.8-38

Ag rear

20.8-38

Ag front

20.8-42

23.1-34

24.5-32

30.5L-32

20.8-42

Ag rear

20.8-42

23.1-34

24.5-32

30.5L-32

20.8-42

Wheelbase

133 inches 337 cm

Length

257.8 inches 654 cm

Shipping weight

37,480 lbs 17000 kg

Operating weight

37,700 lbs 17100 kg

Front axle

4.331 by 127.5 inches 110 by 3238 mm

Rear axle

4.331 by 127.5 inches 110 by 3238 mm

Diesel Quad-Range 4WD May 11 - 21, 1982 Link: Nebraska Tractor Test 1434 file

PTO performance

Power at rated engine speed

303.99 hp 226.7 kW

Fuel use

19.3 gal/hour 73.1 l/hour

Drawbar performance

Max power

269.77 hp 201.2 kW

Fuel use

19.2 gal/hour 72.7 l/hour

Max pull

35,330 lbs 16025 kg