The 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) |
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