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Kubota L3901HST Tractor
The
Kubota L3901HST is a 4-wheel drive compact utility tractor. This model was
manufactured between 2014 and 2021. The Kubota L3901HST driveline includes a
111.4 cubic inches (1.8 L) Kubota D1803-CR-E4 4-cycle 3-cylinder direct
injection naturally aspirated liquid-cooled diesel engine with a rated power of
37.5 hp (28.1 kW), and 3-range hydrostatic transmission with infinite forward
and reverse gears.
Max travel speed (forward/reverse): 3.9 mph (6.3 km/h) using low range
or 14.1 mph (27.2 km/h) using high range, and 3.5 mph (5.6 km/h) using
low range or 12.7 mph (20.5 km/h) using high range.
The open center hydraulic system includes a gear pump with fluid flow
rate of 6.3 gpm (23.9 lpm). The main relief pressure is 162 bar (2350
psi). The Kubota L3901HST is equipped with an integral power steering
system, wet disc brakes, 7.2x16 (AG) or 27x8.50-15 (Industrial) front
tires, and 11.2x24 (AG) or 15x19.5 (Industrial) rear tires. The wheel
base is 63.3" (1610 mm). The tractor is compatible with a
Kubota LA525
front-end loader with lift capacity to full height of 1131 lbs (513 kg),
and Kubota BH77 backhoe with 2-ft flat digging depth of 89.8" (2280 mm).
| Engine Model |
Kubota D1803-CR-E4 |
| Engine Type |
4-cycle vertical direct injection diesel |
| Number of Cylinders |
3 |
| Total Displacement, cu in (L) |
111.4 (1.83) |
| Cylinder Bore, in (mm) |
3.43 (87.0) |
| Piston Stroke, in (mm) |
4.03 (102.4) |
| Aspiration |
Naturally aspirated |
| Rated Engine Power, hp (kW) |
37.5 (28.1) |
| Rated Engine Speed, rpm |
2700 |
| Low Idle Speed, rpm |
900 |
| Maximum Torque, Nm (lb-ft) |
115.8 (85.4) |
| Torque Speed, rpm |
1500 |
| Compression Ratio |
23.8:1 |
| Firing Order |
1-2-3 |
| Fuel System |
Common rail direct injection |
| Fuel System Control |
Electronic |
| Lubricating system |
Forced lubrication by pump |
| Cooling system |
Forced circulation with water pump |
| Emission Level |
Tier 4 Final |
| Fuel Tank Capacity, gal (L) |
11.0 (42.0) |
| Oil Capacity, qts (L) |
7.1 (6.7) |
| Coolant Capacity, qts (L) |
6.3 (6.0) |
| Electrical System Rating, Volts |
12 |
| Charging System |
Alternator |
| Alternator Rating, Amps |
40 |
| PTO Operational Type |
Live-continuous |
| PTO Horsepower, hp (kW) |
30.6 (22.8) |
| PTO Clutch |
Dry disc |
| PTO Speed, rpm |
540 |
| PTO / Engine Speed, rpm |
540/2580 |
| Transmission Type |
Hydrostatic |
| Number of Forward Gears |
Infinite (3-range) |
| Number of Reverse Gears |
Infinite (3-range) |
| Oil Capacity, qts (L) |
24.9 (23.5) |
| Maximum Forward Speed (Low), mph (kph) |
3.9 (6.3) |
| Maximum Forward Speed (Medium), mph (kph) |
6.8 (10.9) |
| Maximum Forward Speed (High), mph (kph) |
14.1 (22.7) |
| Maximum Reverse Speed (Low), mph (kph) |
3.5 (5.6) |
| Maximum Reverse Speed (Medium), mph (kph) |
6.1 (9.9) |
| Maximum Reverse Speed (High), mph (kph) |
12.7 (20.5) |
| Drive Wheels |
4WD 4x4 |
| Steering Configuration |
Front Steer |
| Steering System |
Integral power steering |
| Brake Type |
Wet disc |
| Front Tire Size (AG) |
7.2x16 |
| Rear Tire Size (AG) |
11.2x24 |
| Front Tire Size (Industrial) |
27x8.50-15 |
| Rear Tire Size (Industrial) |
15x19.5 |
| Front Tread, in (mm) |
43.1 (1095) |
| Rear Tread, in (mm) |
43.8-50.8 (1115-1290) |
| Hydraulic System Type |
Open Center |
| Main Hydraulic Pump Type |
Gear |
| Implement Pump Flow, gpm (Lpm) |
6.3 (23.9) |
| Steering Pump Flow, gpm (Lpm) |
3.8 (14.5) |
| Hydraulic Pressure, Bar (psi) |
162 (2350) |
| Number of Standard Remote Valves |
1/3 |
| 3-Point Hitch Category |
Category 1 |
| Draft Sensing or Lift Control |
Position Control |
| Rear Lift Capacity at 24" (0.6m) behind pin, lb (kg) |
1435 (651) |
| Rear Lift Capacity at pin, lb (kg) |
1998 (906) |
| Wheelbase, in (mm) |
63.3 (1610) |
| Length, in (mm) |
107.9 (2740) |
| Height (ROPS), in (mm) |
91.7 (2330) |
| Height (Steering Wheel), in (mm) |
58.1 (1475) |
| Overall Width, in (mm) |
55.1 (1400) |
| Ground Clearance, in (mm) |
13.4 (340) |
| Turning Radius, in (mm) |
98.4 (2500) |
| Weight, lb (kg) |
2780 (1260) |
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| Farm Tractors Technical Specifications |
