John Deere 3720

John Deere 3720The John Deere 3720 is a 4WD compact utility tractor from the 3000 Twenty series. This tractor was manufactured by John Deere in Augusta, Georgia, USA from 2005 to 2013. The John Deere 3720 is equipped with a 1.5 L three-cylinder diesel engine and two variatns of the hydrostatic transmission with Infinite (3-range) forward and reverse gears.

The JD 3720 compact utility tractor used the Yanmar 3TNV84HT engine. It is a 1.5 L, 1,496 cm2, (91.3 cu·in) three-cylinder turbocharged diesel engine with 84.0 mm (3.31 in) of the cylinder bore and 90.0 mm (3.54 in) of the piston stroke. The compression ratio rating is 18.5:1. This engine produced 44.6 PS (32.8 kW; 44.0 HP) at 2,600 rpm of output power.

The John Deere 3720 is equipped with power steering, wet disc brakes, two-post foldable ROPS or Cab (optional) and 51.0 liters (13.5 US gal, 11.2 Imp. gal) fuel tank for ROPS version or 45.0 liters (11.9 US gal, 9.9 Imp. gal) for Cab version.

Following attachments are available for the JD 3720 compact utility tractor:

  • Mid-mount John Deere 60 in (1,520 mm) mower deck with 3-blades
  • John Deere 300X loader
  • John Deere 300CX loader
  • John Deere 47 backhoe

John Deere 3720 Specifications

General Specifications
Model John Deere 3720
Length 3,050 mm (120.1 in)
Width 1,330 mm (52.4 in)
Height 2,360 mm (92.9 in)
Wheel base 1,720 mm (67.7 in)
Weight ROPS: 1,315 kg (2,900 lbs)
Cab: 1,620 kg (3,570 lbs)
Fuel tank capacity ROPS: 51.0 liters (13.5 US gal, 11.2 Imp. gal)
Cab: 45.0 liters (11.9 US gal, 9.9 Imp. gal)
Battery
Cabin type Two-post foldable ROPS or Cab (optional)
Engine
Engine model Yanmar 3TNV84HT
Engine type Four-stroke, liquid-cooled, inline
Cylinders 3
Fuel type Diesel
Displacement 1.5 L, 1,496 cm2, (91.3 cu·in)
Bore and stroke 84.0 mm X 90.0 mm (3.31 in X 3.54 in)
Compression ratio 18.5:1
Horsepower 44.6 PS (32.8 kW; 44.0 HP) at 2,600 rpm
Torque 137.1 N·m (14 kg·m, 101 ft·lb) at 1,600 rpm
Starter Electric
Oil capacity: 5.7 L (6 US. qt, 5 Imp. qt.)
Coolant capacity: 5.3 L (5.6 US. qt, 4.7 Imp. qt.)
Transmission and chassis
Chassis 4×4 MFWD 4WD
Steering type Power
Brakes Wet disc
Transmission model Sauer-Danfoss eHydro
Transmission type Hydrostatic
Gears Infinite (3-range) forward and reverse
Speed Forward: 30.6 kmh (19 mph) Reverse: 30.6 (19 mph)
Transmission model eHydro AutoHST
Transmission type Hydrostatic
Gears Infinite (3-range) forward and reverse
Speed Forward: 30.6 kmh (19 mph) Reverse: 30.6 (19 mph)
Tires
Front tires Ag: 7-14
Rear tires Ag: 11.2-24
Three-Point Hitch
Caterogy I
Control type
Lift capacity (at ends) 1,150 kg (2,540 lbs)
PTO (Power take-off shaft)
Middle PTO type Optional
Middle PTO speed 2,100 rpm
Rear PTO type Independent
Rear PTO speed 540 rpm
Hydraulic system
Hydraulic type Open center
Hydraulic capacity 25.7 L (27.16 US. qt, 22.61 Imp. qt.)
Valves 5
Pump flow 8.6 gpm (32.6 lpm)
Steering flow 5.3 gpm (20.1 lpm)
Total flow 13.9 gpm (52.6 lpm)