John Deere 8120

2002 - 2005

8020 Series

Row-Crop tractor

Manufacturer

John Deere

Row-Crop tractor

Built in Waterloo, Iowa, USA

8120

wheeled tractor

8120T

crawler

John Deere 8.1L 6-cyl diesel

16-speed full power shift

Engine (gross)

208 hp 155.1 kW

Engine (net)

200 hp 149.1 kW

Engine (max)

230 hp 171.5 kW

PTO (claimed)

170 hp 126.8 kW

Drawbar (tested)

148.45 hp 110.7 kW

PTO (tested)

199.71 hp 148.9 kW

Two- or four-wheel drive

Steering

hydrostatic power

Hydraulic wet disc brakes

Cab standard.

Fuel

135 gal 511.0 L

160 gal (optional) 605.6 L

Hydraulic system

37 gal 140.0 L

39.6 gal (ILS) 149.9 L

Front hubs

3.6 qts 3.4 L

4.2 qts (ILS) 4.0 L

Front diff.

14.2 qts 13.4 L

Type

closed center pressure-flow compensated (PFC)

Capacity

37 gal 140.0 L

39.6 gal (ILS) 149.9 L

Pressure

2900 psi 200.0 bar

Valves

5

SCV flow

30 gpm 113.6 lpm

Total flow

33.5 gpm*With standard 45cc pump 126.8 lpm

42.5 gpm*Optional 57cc pump 160.9 lpm

Rear Type

III,IIIN

Rear lift

12,300 lbs 5579 kg

15,180 lbsOptOptional 6885 kg

Front Hitch

IIIN OptOptional

Front lift

11000 lbs 4989 kg

Rear PTO

independent

Clutch

hydraulic wet discs

Rear PTO Type

1000 (1.75)

540/1000 (1.375 optional)

Engine RPM

540@1975

1000@2200

2WD Wheelbase

123.6 inches 313 cm

4WD Wheelbase

116.9 inches 296 cm

ILS Wheelbase

115.7 inches 293 cm

118.9 inches (long frame) 302 cm

Weight

19100 to 22450 pounds

Front tire

11.00-24

Rear tire

480/80R46

Ground

negative

Charging system

alternator

Charging amps

150

Batteries

2

Battery CCA

925

Battery volts

12

Manufacturer

John Deere

Configuration

turbocharged diesel, 6-cylinder, liquid-cooled inline

Displacement

496 ci 8.1 L

Bore/Stroke

4.56x5.06 inches 116 x 129 mm

Rated Power (net)

200 hp 149.1 kW

Rated Power (gross)

208 hp 155.1 kW

Maximum Power (net)

220 hp 164.1 kW

Maximum Power (gross)

230 hp 171.5 kW

Fuel system

electronic high-pressure common rail (HPCR)

Air cleaner

dry with secondary element

Compression

16.5:1

Rated RPM

2200

Idle RPM

900-2300

Operating RPM

1500-2200

Starter volts

12

Coolant capacity

35.9 qts 34.0 L

Oil capacity

22.7 qts 21.5 L

Oil change

250 h

Transmission

John Deere PowerShift

Type

full power shift

Gears

16 forward and 4 reverse

Clutch

hydraulic wet disc

Oil capacity

148 qts 140.1 L

158.4 qts (ILS) 149.9 L

Full power shift transmission with single shift lever with display on cab corner post. Tractor begins in 7 (forward) and 2 (reverse) on start up. Clutch pedal may be used to pre-select a gear by holding clutch and pressing lever until desired gear is reached. Automatic PowerShift (APS) allows automated shifting to match load.

With 18.4R46 rear tires.

Standard tires (ag)

Front: 11.00-24. Rear: 480/80R46

2WD Wheelbase

123.6 inches 313 cm

4WD Wheelbase

116.9 inches 296 cm

ILS Wheelbase

115.7 inches 293 cm

118.9 inches (long frame) 302 cm

Length

209.9 inches 533 cm

211.9 inches (long frame) 538 cm

Height (cab)

120.2 inches 305 cm

Front axle

2WD

Front axle

MFWD

Front axle

MFWD ILS

Rack-and-pinion rear axle

3.937 by 110.5 inches 99 by 2806 mm

Rack-and-pinion rear axle

3.937 by 118.5 inches 99 by 3009 mm

Rack-and-pinion rear axle

4.331 by 118.5 inches 110 by 3009 mm

Rack-and-pinion rear axle

4.724 by 118.5 inches 119 by 3009 mm

2WD Front tread

60 to 88 inches 152 to 223 cm

4WD Front tread

60 to 80 inches 152 to 203 cm

ILS Front tread

60 to 88 inches 152 to 223 cm

Shipping

19,100 lbs (2WD) 8663 kg

21,050 lbs (4WD) 9548 kg

21,650 lbs (long frame) 9820 kg

22,450 lbs (ILS) 10183 kg

Operating

20,060 lbs (4WD 480/80R46 duals) 9099 kg

Max Drawbar

3,900 lbs (Cat 3 extended) 1769 kg

6,070 lbs (Cat 3 short) 2753 kg

10,000 lbs (Cat 4) 4536 kg

Diesel 16-speed 4WD March 28 - April 8, 2003 Link: OCED Tractor Test 1819 file

PTO performance

Max power

199.71 hp 148.9 kW

Fuel use

10.5 gal/hour 39.7 l/hour

Power at rated engine speed

172.13 hp 128.4 kW

Fuel use

10.1 gal/hour 38.2 l/hour

Drawbar performance

Max power

148.45 hp 110.7 kW

Fuel use

10.2 gal/hour 38.6 l/hour

Gear 8 used for power test.

Max pull

22,308 lbs 10118 kg

Gear 3 used for pull test.