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Kubota M108S

The Kubota M108S is a tractor produced by Kubota. It is equipped with a 230 ci 3.8 L engine. The listed engine power is Diesel (net): 108 hp / 80.5 kW. Transmission: Swing Shift Plus with creeper. Operating weight: 6349 to 8576 pounds.

Engine Power
Diesel (net): 108 hp / 80.5 kW
Fuel & Capacities
46.2 gal 174.9 L
Transmission
Swing Shift Plus with creeper
Operating Weight
6349 to 8576 pounds

Overview

Kubota M108S tractor photo
2007 - 2014 Row-Crop tractor
Production
Manufacturer
Kubota
Row-Crop tractor
Original price
$36,542 (2011)
Variants
M108X
Intelli-Shift
M108SDSL
low-profile
M108SH
2WD ROPS 16-speed
M108SDSF
2WD ROPS 32-speed
M108SHD
4WD ROPS 16-speed
M108SDS
4WD ROPS 32-speed
M108SHC
2WD cab 16-speed
M108SHDC
4WD cab 16-speed
M108SDSC
4WD cab 32-speed
Kubota M108S Engine
Kubota 3.8L 4-cyl diesel
Engine details ...
Kubota M108S Power
Engine (net)
108 hp 80.5 kW
PTO (claimed)
96 hp 71.6 kW
PTO (tested)
103.17 hp 76.9 kW
Performance test details ...
Mechanical
Two- or four-wheel drive
Differential lock
mechanical rear or front-and-rear (4WD) (2WD)
Steering
hydrostatic power
Hydraulic wet disc brakes
Two-post foldable ROPS. Cab with heat and air-conditioning optional.
Capacity
Fuel
46.2 gal 174.9 L
Hydraulic system
16.6 gal 62.8 L
Front axle
11.1 qts 10.5 L
Hydraulics
Type
open center
Capacity
16.6 gal 62.8 L
Pressure
2844 psi 196.1 bar
Valves
1 to 3
Pump flow
17.2 gpm 65.1 lpm
Total flow
29.3 gpm 110.9 lpm
Steering flow
12.1 gpm 45.8 lpm
Tractor hitch
Rear Type
II
Rear lift (at ends)
5,560 lbs 2522 kg
Rear lift (at 24"/610mm)
4,630 lbs 2100 kg
7,490 lbs (optional) 3397 kg
Power Take-off (PTO)
Rear PTO
independent
Rear PTO Type
540 (1.375)
540/1000 (optional)
Engine RPM
540@2205
Dimensions & Tires
Weight
6349 to 8576 pounds
Front tire
10.00-16
Rear tire
18.4-34 (2WD)
Full dimensions and tires ...
Electrical
Ground
negative
Charging system
alternator
Charging amps
45 (ROPS)
80 (cab)
Battery CCA
900
Battery volts
12
Battery Group
negative

Engine

Engine Detail — 230 ci / 3.8 L Diesel

Manufacturer
Kubota V3800-DT-TI
Configuration
turbocharged intercooled diesel, 4-cylinder 16-valve, liquid-cooled
Displacement
230 ci 3.8 L
Emissions
Tier III
Emission control
EGR
Power (net)
108 hp 80.5 kW
Air cleaner
dual dry elements
Rated RPM
2600
Starter
electric
Starter volts
12
Oil capacity
11.3 qts 10.7 L
Coolant capacity
9.6 qts 9.1 L

Transmission

Transmission options
16-speed partially synchronized
32-speed partial power shift
24-speed partially synchronized
48-speed partial power shift

Transmission — Swing Shift

Transmission
Swing Shift
Type
partially synchronized
Gears
16 forward and reverse
Clutch
wet disc
Oil capacity
66.4 qts 62.8 L
Four synchronized gears in two synchronized ranges plus additional non-synchronized high-low range. Hydraulic shuttle.

Transmission — Swing Shift Plus Dual Speed

Transmission
Swing Shift Plus Dual Speed
Type
partial power shift
Gears
32 forward and reverse
Oil capacity
66.4 qts 62.8 L
Dual Speed adds a push-button power shift at each gear in the basic Swing Shift transmission.

Transmission — Swing Shift with creeper

Transmission
Swing Shift with creeper
Type
partially synchronized
Gears
24 forward and reverse

Transmission — Swing Shift Plus with creeper

Transmission
Swing Shift Plus with creeper
Type
partial power shift
Gears
48 forward and reverse

Dimensions

Kubota M108S Tires
Standard tires (ag)
Front: 10.00-16. Rear: 18.4-34 (2WD)
Front: 13.6-24. Rear: 18.4-34 (4WD)
Optional tires (ag)
Front: 9.5L-15. Rear: 16.9-34 (2WD)
Front: 10.00-16. Rear: 18.4R34 (2WD)
Front: 12.4-24. Rear: 18.4-30 (4WD)
Front: 12.4R24. Rear: 18.4R30 (4WD)
Front: 13.6R24. Rear: 13.6R34 (4WD)
Front: 12.4-24. Rear: 16.9-34 (4WD)
Dimensions
Width
90 inches (2WD) 228 cm
91 inches (4WD) 231 cm
Clearance (drawbar)
17.1 inches 43 cm
Front tread
60.6 to 80.3 inches 153 to 203 cm (2WD)
Front tread
60.2 to 65.4 inches 152 to 166 cm (4WD)
Rear tread
67.1 to 79 inches 170 to 200 cm (2WD)
Rear tread
68.1 to 80.1 inches 172 to 203 cm (4WD)
Kubota M108S Weight
6,349 lbs (2WD ROPS) 2879 kg
6,945 lbs (2WD cab) 3150 kg
7,981 lbs (4WD ROPS) 3620 kg
8,576 lbs (4WD cab) 3890 kg
Kubota M108S Height
ROPS
105 inches 266 cm
81 inches (folded) 205 cm
Cab
106 inches 269 cm

Tests

Nebraska Tractor Test 1944
Diesel 16-speed 4WD November 18 - 21, 2008 Link: Nebraska Tractor Test 1944 file
PTO performance
Max power
103.17 hp 76.9 kW
Fuel use
6.2 gal/hour 23.5 l/hour
Power at rated engine speed
101.74 hp 75.9 kW
Fuel use
6.3 gal/hour 23.8 l/hour
Power at rated PTO speed
99.27 hp 74.0 kW
Fuel use
5.8 gal/hour 22.0 l/hour

Attachments

Attachment overview
Kubota LA1403 Height Position loader
Kubota LA1403 Power Position loader

Photos

Kubota M108S

Kubota M108S

Recommended Implements & Sizing Guide

Engineering recommendations for Kubota M108S based on its 108 HP power envelope and ASAE agricultural standards.

Implement & OperationRecommended SizeWorkload RatingEngineering Notes
Moldboard PlowPrimary Tillage
4 to 5 Bottom (16-18")4 - 5 铧 (40-45 cm)Heavy DutyHeavy primary tillage; semi-mounted hitch recommended.
Rotary Cutter / MowerMowing & Clearing
10 to 12 ft Flex-Wing3.0 - 3.6 m 折叠双翼Heavy DutyWide swath pasture and crop residue shredding.
Rotary TillerSeedbed Prep
90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机Commercial / Field ScaleDeep intensive seedbed preparation for commercial row crops.
Disc HarrowSecondary Tillage
10 to 14 ft Tandem / Offset3.0 - 4.2 m 重型交错耙Heavy DutyAggressive residue cutting in corn/cotton stubble.
Hay BalerHay & Forage
5x6 Round Baler or 3x3 Mid Square1.5x1.8 m 大圆捆或中型方捆机Heavy DutyHigh density baling; requires minimum 85 PTO HP.
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Kubota M108S.

Estimated Continuous Field Runtime: 8.2 hrs

Approximately 8.2 hours of continuous field operation at ~75% rated power on a full tank (46.2 gal / 174.9 L).

Estimated 75% Load Fuel Burn~5.6 gal/hr (21.3 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours

Kubota M108S Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Kubota M108S.

Converted Equivalents:

Horsepower (HP)108 hp
Kilowatts (kW)80.5 kW
Metric Horsepower (PS / CV)109.5 PS

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