John Deere 4120

John Deere 4120The John Deere 4120 is a 4WD compact utility tractor from the 4000 series. This tractor was manufactured by the John Deere in Augusta, Georgia, USA from 2004 to 2014. The JD 4120 is equipped with a 2.4 L four-cylinder turbocharged diesel engine and one of two transmissions: a power shuttle transmission with 12 forward and 12 reverse gears or hydrostatic transmission with infinite forward and reverse.

The John Deere 4120 compact utility tractor used the John Deere 4024T engine. It is a 2.4 L, 2,440 cm2, (148.9 cu·in) four-cylinder turbocharged diesel engine with 86.0 mm (3.39 in) of the cylinder bore and 105.0 mm (4.13 in) of the piston stroke. The compression ratio rating is 20.0:1. This engine produced 43.0 PS (31.6 kW; 42.4 HP) at 2,400 rpm of horsepower and 148.0 N·m (15.1 kg·m, 109.1 ft·lb) at 1,440 rpm of torque.

The J 4120 is equipped with power steering, wet disc brakes, open operator station with ROPS and 55.0 liters (14.5 US gal.; 12.1 Imp. gal) fuel tank.

Following attachments are available for the John Deere 4120 compact utility tractor:

  • John Deere 400X loader
  • John Deere 400CX (MSL) loader
  • John Deere 485 backhoe

John Deere 4120 Specifications

General Specifications
ModelJohn Deere 4120
Length3,250 mm (128 in)
Width1,660 mm (65.4 in)
Height2,460 mm (96.9 in)
Wheel base1,810 mm (71.3 in)
Weight1,680 kg (3,705 lbs)
Fuel tank capacity55.0 liters (14.5 US gal.; 12.1 Imp. gal)
Battery12V, CCA 770A
Cabin typeOpen operator station with ROPS
Engine modelJohn Deere 4024T
Engine typeFour-stroke, liquid-cooled, inline
Fuel typeDiesel
Displacement2.4 L, 2,440 cm2, (148.9 cu·in)
Bore and stroke86.0 mm X 105.0 mm (3.39 in X 4.13 in)
Compression ratio 20.0:1
Horsepower43 PS (31.6 kW; 42.4 HP) at 2,400 rpm
Torque148.0 N·m (15.1 kg·m, 109.1 ft·lb) at 1,440 rpm
Oil capacity:7.5 L (7.9 US. qt, 6.6 Imp. qt.)
Coolant capacity:6.1 L (6.4 US. qt, 5.4 Imp. qt.)
Transmission and chassis
Chassis4×4 MFWD 4WD
Steering typePower
BrakesWet disc
Final drivePlanetary gear
Differential lock Mechanical
Transmission modelPowrReverser
Transmission typePower shuttle
Gears12 forward and 12 reverse
Speed Forward: 27.8 kmh (17.3 mph)
Transmission oil capacity39.0 L (10.3 US. gal, 8.6 Imp. gal.)
Transmission modeleHydro
Transmission typeHydrostatic
GearsInfinite forward and reverse
Speed Forward: 27.2 kmh (16.9 mph)
Transmission oil capacity36.1 L (9.6 US. gal, 8 Imp. gal.)
Front tiresAg: 8.00-16
Rear tiresAg: 13.6-28
Three-Point Hitch
Control type
Lift capacity (at ends)1,420 kg (3,131 lbs)
PTO (Power take-off shaft)
Middle PTO typeIndependent (option)
Middle PTO spped2,100 rpm
Rear PTO typeIndependent
Rear PTO spped540 rpm
Hydraulic system
Hydraulic typeOpen center
Hydraulic capacity PowrReverser: 39.0 L (41.21 US. qt, 34.32 Imp. qt.)
eHydro : 36.1 L (9.6 US. gal, 8 Imp. gal.)
Pressure2,500 psi (172 bar)
Pump flow12.0 gpm (45.4 lpm)
Steering flow5.1 gpm (19.3 lpm)
Total flow17.1 gpm (64.7 lpm)
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We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. In addition, the characteristics may vary depending on the modification and market. We do not provide advice on technical issues related to the any operation or repair. We do not recommend using provided information for repairing or spare parts ordering, use only official service manuals and spare-parts catalogs.

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