John Deere 8120: all source data

All 108 values recorded for this model, as the source lists them and in its units. The spec sheet shows the same data checked, typed and converted.

Overview

Production
ManufacturerJohn Deere
(no label)Row-Crop tractor
(no label)Built in Waterloo, Iowa, USA
Engine
(no label)John Deere 8.1L 6-cyl diesel
Transmission
(no label)16-speed full power shift
Power
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
Mechanical
(no label)Two- or four-wheel drive
Steeringhydrostatic power
(no label)Hydraulic wet disc brakes
(no label)Cab standard.
Capacity
Fuel135 gal | 511.0 L
Fuel160 gal (optional) | 605.6 L
Hydraulic system37 gal | 140.0 L
Hydraulic system39.6 gal (ILS) | 149.9 L
Front hubs3.6 qts | 3.4 L
Front hubs4.2 qts (ILS) | 4.0 L
Front diff.14.2 qts | 13.4 L
Hydraulics
Typeclosed center pressure-flow compensated (PFC)
Capacity37 gal | 140.0 L
Capacity39.6 gal (ILS) | 149.9 L
Pressure2900 psi | 200.0 bar
Valves5
SCV flow30 gpm | 113.6 lpm
Total flow33.5 gpm | 126.8 lpm
Total flow42.5 gpm | 160.9 lpm
Hitch
Rear TypeIII,IIIN
Rear lift12,300 lbs | 5579 kg
Rear lift15,180 lbs | 6885 kg
Front HitchIIIN
Front lift11000 lbs | 4989 kg
Pto
Rear PTOindependent
Clutchhydraulic wet discs
Rear PTO Type1000 (1.75)
Rear PTO Type540/1000 (1.375 optional)
Engine RPM540@1975
Engine RPM1000@2200
Dimensions
2WD Wheelbase (2WD)123.6 inches | 313 cm
4WD Wheelbase (4WD)116.9 inches | 296 cm
ILS Wheelbase (ILS)115.7 inches | 293 cm
ILS Wheelbase (ILS)118.9 inches (long frame) | 302 cm
Weight19100 to 22450 pounds
Front tire11.00-24
Rear tire480/80R46
Serial location
(no label)Rear of tractor.
Electrical
Groundnegative
Charging systemalternator
Charging amps150
Batteries2
Battery CCA925
Battery volts12

Engine

Engine detail
(no label)John Deere
(no label)turbocharged diesel
(no label)6-cylinder
(no label)liquid-cooled inline
Displacement496 ci | 8.1 L
Bore/Stroke4.56x5.06 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 systemelectronic high-pressure common rail (HPCR)
Air cleanerdry with secondary element
Compression16.5:1
Rated RPM2200
Idle RPM900-2300
Operating RPM1500-2200
Starter volts12
Coolant capacity (Coolant)35.9 qts | 34.0 L
Engine oil
Oil capacity22.7 qts | 21.5 L
Oil change250 h

Transmission

Transmission
TransmissionJohn Deere PowerShift
Typefull power shift
Gears16 forward and 4 reverse
Clutchhydraulic wet disc
Oil capacity148 qts | 140.1 L
Oil capacity158.4 qts (ILS) | 149.9 L
(no label)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.

Dimensions

Tires
Standard tires (ag)Front: 11.00-24. Rear: 480/80R46
Dimensions
2WD Wheelbase (2WD)123.6 inches | 313 cm
4WD Wheelbase (4WD)116.9 inches | 296 cm
ILS Wheelbase (ILS)115.7 inches | 293 cm
ILS Wheelbase (ILS)118.9 inches (long frame) | 302 cm
Length209.9 inches | 533 cm
Length211.9 inches (long frame) | 538 cm
Height (cab)120.2 inches | 305 cm
Front axle2WD
Front axleMFWD
Front axleMFWD ILS
Rack-and-pinion rear axle (Rack-and-pinion)3.937 by 110.5 inches | 99 by 2806 mm
Rack-and-pinion rear axle (Rack-and-pinion)3.937 by 118.5 inches | 99 by 3009 mm
Rack-and-pinion rear axle (Rack-and-pinion)4.331 by 118.5 inches | 110 by 3009 mm
Rack-and-pinion rear axle (Rack-and-pinion)4.724 by 118.5 inches | 119 by 3009 mm
2WD Front tread60 to 88 inches | 152 to 223 cm
4WD Front tread60 to 80 inches | 152 to 203 cm
ILS Front tread60 to 88 inches | 152 to 223 cm
Weight
Shipping19,100 lbs (2WD) | 8663 kg
Shipping21,050 lbs (4WD) | 9548 kg
Shipping21,650 lbs (long frame) | 9820 kg
Shipping22,450 lbs (ILS) | 10183 kg
Operating20,060 lbs (4WD 480/80R46 duals) | 9099 kg
Max Drawbar3,900 lbs (Cat 3 extended) | 1769 kg
Max Drawbar6,070 lbs (Cat 3 short) | 2753 kg
Max Drawbar10,000 lbs (Cat 4) | 4536 kg