John Deere

John Deere 3120

The John Deere 3120 is a compact utility tractor produced from 2005 to 2008 as part of the 3000 Twenty Series. It features a 29.5 hp Yanmar 1.5L 3-cylinder liquid-cooled diesel engine with direct injection and Tier II emissions. The tractor uses a Sauer-Danfoss eHydro hydrostatic transmission with infinite forward and reverse speeds across 3 ranges, controlled by foot pedals and a range shift lever. It has four-wheel drive, power steering, wet disc brakes, and a two-post folding ROPS. The 3120 has a fuel capacity of 13.5 gallons and a hydraulic system capacity of 6.8 gallons with an open center system and 5 valves. The rear hitch is category I with a lift capacity of 2530 lbs. PTO options include an independent 540 rpm rear PTO and an optional 2100 rpm mid PTO. Dimensions include a 68 inch wheelbase, 120.2 inch length, 52.4 inch minimum width, and 93.3 inch ROPS height. The tractor weighs 3000 lbs. Attachments include a 60 inch mid-mount mower deck, 300X and 300CX loaders, and a John Deere 47 backhoe. Electrical system features a 12 volt battery with 500 CCA and 40 amp charging. The 3120 was built in Augusta, Georgia, USA.
Power29 hp
Founded2005 - 2008
Model3120

Technical Specifications

Detailed specifications and technical data for John Deere 3120

Power
Engine power29.5 hp / 22.0 kW
Engine
Typediesel
ModelYanmar 3TNV84
Power29.5 hp / 22.0 kW
Torque66.7 lb-ft / 90.4 Nm
Coolingliquid-cooled
Cylinders3-cylinder
EmissionsTier II
Rated RPM2600
Torque RPM1560
Bore/Stroke3.3x3.54 inches / 84 x 90 mm
Compression18.5:1
Fuel systemdirect injection
Displacement91.5 ci / 1.5 L
Oil capacity5.1 qts / 4.8 L
Starter volts12
Coolant capacity5.6 qts / 5.3 L
Capacity
Fuel13.5 gal / 51.1 L
Hydraulic system6.8 gal / 25.7 L
Electrical
Groundnegative
Battery CCA500
Battery volts12
Charging amps40
Hydraulics
Typeopen center
Valves5
Capacity6.8 gal / 25.7 L
Pump flow8.6 gpm / 32.6 lpm
Total flow13.9 gpm / 52.6 lpm
Mechanical
ROPSTwo-post folding ROPS
DriveFour-wheel drive
BrakesWet disc brakes
Steeringpower
Production
Years2005 - 2008
Series3000 Twenty Series
Built inAugusta, Georgia, USA
CategoryCompact Utility tractor
Attachments
Overview60" mid-mount mower deck, John Deere 300X loader, John Deere 300CX loader, Backhoe
300X Loader
Dump time4.1s
AttachmentDeere quick-attach
Dump angle40°
Lower time1.7s
Raise time2.8s
Bucket width61 inches / 154 cm
Reach dumped30.4 inches / 77 cm
Reach ground54.4 inches / 138 cm
Height at pin90 inches / 228 cm
Rollback time1.7s
Breakout at pin2855 lbs / 1295 kg
Rollback raised103°
Clearance dumped68.6 inches / 174 cm
Lift 1.5m at pin1700 lbs / 771 kg
Lift full at pin1360 lbs / 616 kg
Breakout at 500mm2032 lbs / 921 kg
Lift 1.5m at 500mm1312 lbs / 595 kg
Lift full at 500mm999 lbs / 453 kg
Rollback ground line21°
300CX Loader
Dump time4.2s
AttachmentDeere quick-attach, skid steer (optional)
Dump angle41.1°
Lower time2.1s
Raise time3.6s
Bucket width61 inches / 154 cm
Reach dumped22 inches / 55 cm
Reach ground58.6 inches / 148 cm
Height at pin102 inches / 259 cm
Rollback time1.8s
Breakout at pin3327 lbs / 1509 kg
Rollback raised119°
Clearance dumped79.6 inches / 202 cm
Lift 1.5m at pin2125 lbs / 963 kg
Lift full at pin1598 lbs / 724 kg
Breakout at 500mm2416 lbs / 1095 kg
Lift 1.5m at 500mm1649 lbs / 747 kg
Lift full at 500mm1122 lbs / 508 kg
Rollback ground line31°
60" Mower deck
Typemid-mount John Deere
Blades3-blade
Cutting width60 inches / 152 cm
John Deere 47 Backhoe
Weight1047 lbs / 474 kg
Swing Arc180°
Backhoe typeJohn Deere 47 Backhoe
Bucket force2840 lbs / 1288 kg
Loading height70 inches / 177 cm
Bucket Rotation180°
Reach from pivot114 inches / 289 cm
Dipperstick force2005 lbs / 909 kg
2-Foot flat digging depth90 inches / 228 cm
Transmission
Typehydrostatic
Gearsinfinite forward and reverse (3-range)
ModelSauer-Danfoss eHydro
ControlControlled by two foot pedals and range shift lever. Tractor must be stopped before shifting ranges. Cruise control standard. SpeedMatch allows maximum speed to be limited. MotionMatch allows acceleration rate to be set. LoadMatch allows engine RPMs to be set, tractor will adjust speed to maintain RPMs.
Tractor hitch
Rear TypeI
Rear lift (at ends)2530 lbs / 1147 kg
Serial Numbers
2005110001
2006210001
2007310001
2008410001
Dimensions & Tires
Width52.4 inches (Minimum) / 133 cm
Length120.2 inches / 305 cm
Weight3000 lbs / 1360 kg
Wheelbase68 inches / 172 cm
Rear tread40.6/45.3/48.9/53.1/56.6 inches / 103/115/124/134/143 cm
Ag rear tire11.2-24
Ag front tire7-14
Height (ROPS)93.3 inches / 236 cm
Height (hood)57 inches / 144 cm
Lawn/turf rear tire41x14-20, 41x18LL-16.1
Industrial rear tire15-19.5, 43x16-20
Lawn/turf front tire27x8.5-15, 25x10.5LL-15
Clearance (rear axle)12.2 inches / 30 cm
Industrial front tire25x8.5-14, 27x8.5-15
Power Take-off (PTO)
Mid PTOoptional
Rear PTOindependent
Mid PTO Type2100
Rear PTO Type540