Overview
The Kubota M108S is a farm tractor produced from 2007 to 2014, powered by a 3.8L 4-cylinder turbocharged intercooled diesel engine rated at 108 net horsepower. It features a Tier III emission system and was available in multiple drive configurations, including 2WD and 4WD, with transmission options providing between 16 and 48 speeds. Notable performance includes a tested PTO power of 103.17 hp and a total hydraulic flow of 29.3 gpm.
Ideal Applications
Nebraska Test Performance:
Nebraska Tractor Test 1944 recorded a maximum PTO power of 103.17 hp with a fuel consumption rate of 6.2 gallons per hour at maximum output.
Transmission and Drive Configuration:
The tractor is equipped with a hydraulic shuttle and offers gear configurations ranging from a 16-speed partially synchronized version to a 48-speed partial power shift system.
Hydraulic and Hitch Capacity:
The hydraulic system provides 17.2 gpm of pump flow and 29.3 gpm total flow, supporting a Category II hitch with a 4,630-pound lift capacity at 24 inches.
Production
| Description | Row-Crop tractor |
|---|---|
| Manufacturer | Kubota |
| Original price | $36,542 (2011) |
Engine
| Engine type | Kubota 3.8L 4-cyl diesel |
|---|---|
| Air cleaner | dual dry elements |
| Coolant capacity | 9.6 qts (9.1 L) |
| Description | Kubota V3800-DT-TI / turbocharged intercooled diesel / 4-cylinder 16-valve / liquid-cooled |
| Displacement | 230 ci (3.8 L) |
| Emission control | EGR |
| Emissions | Tier III |
| Oil capacity | 11.3 qts (10.7 L) |
| Power (net) | 108 hp (80.5 kW) |
| Rated RPM | 2600 |
| Starter | electric |
| Starter volts | 12 |
| Engine (net) | 108 hp (80.5 kW) |
| PTO (claimed) | 96 hp (71.6 kW) |
| PTO (tested) | 103.17 hp (76.9 kW) |
Transmission
| Clutch | wet disc |
|---|---|
| Description | Four synchronized gears in two synchronized ranges plus additional non-synchronized high-low range. Hydraulic shuttle. / Dual Speed adds a push-button power shift at each gear in the basic Swing Shift transmission. |
| Gears | 16 forward and reverse / 32 forward and reverse / 24 forward and reverse / 48 forward and reverse |
| Oil capacity | 66.4 qts (62.8 L) / 66.4 qts (62.8 L) |
| Transmission | Swing Shift / Swing Shift Plus Dual Speed / Swing Shift with creeper / Swing Shift Plus with creeper |
| Type | partially synchronized / partial power shift / partially synchronized / partial power shift |
| Transmission type | 16-speed partially synchronized / 32-speed partial power shift / 24-speed partially synchronized / 48-speed partial power shift |
| Transmission type | 16-speed partially synchronized / 32-speed partial power shift / 24-speed partially synchronized / 48-speed partial power shift |
Mechanical
| Cab | Two-post foldable ROPS. Cab with heat and air-conditioning optional. |
|---|---|
| Description | Hydraulic wet disc brakes |
| Differential lock | mechanical rear or front-and-rear (4WD) (2WD) |
| Drive type | Two- or four-wheel drive |
| Steering | hydrostatic power |
Capacity
| Front axle | 11.1 qts (10.5 L) |
|---|---|
| Fuel | 46.2 gal (174.9 L) |
| Hydraulic system | 16.6 gal (62.8 L) |
Hydraulics
| Capacity | 16.6 gal (62.8 L) |
|---|---|
| Pressure | 2844 psi (196.1 bar) |
| Pump flow | 17.2 gpm (65.1 lpm) |
| Steering flow | 12.1 gpm (45.8 lpm) |
| Total flow | 29.3 gpm (110.9 lpm) |
| Type | open center |
| Valves | 1 to 3 |
Hitch
| Rear lift (at 24"/610mm) | 4,630 lbs (2100 kg) |
|---|---|
| Rear lift (at ends) | 5,560 lbs (2522 kg) |
| Rear Type | II |
PTO
| Engine RPM | 540@2205 |
|---|---|
| Rear PTO | independent |
| Rear PTO Type | 540 (1.375) |
Electrical
| Battery CCA | 900 |
|---|---|
| Battery Group | negative |
| Battery volts | 12 |
| Charging amps | 45 (ROPS) |
| Charging system | alternator |
| Ground | negative |
Dimensions & Tires
| Clearance (drawbar) | 17.1 inches (43 cm) |
|---|---|
| Front tread | 60.6 to 80.3 inches (2WD) (153 to 203 cm) / 60.2 to 65.4 inches (4WD) (152 to 166 cm) |
| Rear tread | 67.1 to 79 inches (2WD) (170 to 200 cm) / 68.1 to 80.1 inches (4WD) (172 to 203 cm) |
| Width | 90 inches (2WD) (228 cm) |
| Front tire | 10.00-16 |
| Rear tire | 18.4-34 (2WD) |
| Weight | 6349 to 8576 pounds |
| Optional tires (ag) | Front: 9.5L-15. Rear: 16.9-34 (2WD) |
| Standard tires (ag) | Front: 10.00-16. Rear: 18.4-34 (2WD) |
Kubota M108S Height
| Cab | 106 inches (269 cm) |
|---|---|
| ROPS | 105 inches (266 cm) |
Kubota M108S attachments
| Description | front-end loader |
|---|
Nebraska Tractor Test 1944
| Description | Diesel 16-speed 4WDNovember 18 - 21, 2008Link: Nebraska Tractor Test 1944 file / PTO performance |
|---|---|
| Fuel use | 6.2 gal/hour (23.5 l/hour) / 6.3 gal/hour (23.8 l/hour) / 5.8 gal/hour (22.0 l/hour) |
| Max power | 103.17 hp (76.9 kW) |
| Power at rated engine speed | 101.74 hp (75.9 kW) |
| Power at rated PTO speed | 99.27 hp (74.0 kW) |
Variants
| M108SDS | 4WD ROPS 32-speed |
|---|---|
| M108SDSC | 4WD cab 32-speed |
| M108SDSF | 2WD ROPS 32-speed |
| M108SDSL | low-profile |
| M108SH | 2WD ROPS 16-speed |
| M108SHC | 2WD cab 16-speed |
| M108SHD | 4WD ROPS 16-speed |
| M108SHDC | 4WD cab 16-speed |
| M108X | Intelli-Shift |