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Home / Farm Tractors / Kubota Tractors / Kubota L4630

Kubota L4630 Tractor

The Kubota L4630 L30 series compact utility tractor was manufactured between 2003 and 2007. This model was designed in 4 versions: L4630DT (8-Speed), L4630GST (12-Speed), L4630HST (Hydrostatic), and L4630GSTC (Cab).

The Kubota L4630 tractor is powered by 134.1 cu.in (2.2L) Kubota V2203 4-cycle vertical 4-cylinder indirect injection naturally aspirated diesel engine with a rated power of 44.7 Hp (33.3 kW) and 146.2 Nm (107.8 lb-ft) of maximum torque at 1600 rpm.

The Kubota L4630 is fitted with three transmission options: FST Sync Shuttle fully synchronized transmission with 8 forward and 8 reverse gears, Glide Shift fully synchronized transmission with 12 forward and 8 reverse gears, and 3-range hydrostatic transmission with infinite forward and reverse gears. The maximum travel speed (forward/reverse): 18.7 mph (30 km/h) and 16.8 mph (27 km/h). The open center hydraulic system used a gear pump with a rated capacity of 9.8 gal/min (37 l/min).

The hydraulic system pressure is 177 bar (2560 psi). The Kubota L4630 is equipped with a hydrostatic power steering, wet disc brakes, 8.00x16 or 8.3x16 front tires, and 13.6x24 or 14.9x24 rear tires. The wheel base is 74.6" (1895 mm). The tractor is compatible with a Kubota LA853 front-end loader with lift capacity to full height of 2374 lbs (1076 kg) and breakout force of 3125 lbs (1417 kg).

Engine
Engine Model Kubota V2203
Engine Type 4-cycle, vertical, 4-cylinder indirect injection diesel
Number of Cylinders 4
Displacement, cu in (L) 134.1 (2.197)
Engine Bore, in (mm) 3.40 (87.0)
Engine Stroke, in (mm) 3.60 (92.4)
Aspiration Natural
Rated Engine Power, hp (kW) 44.7 (33.3)
Rated Engine Speed, rpm 2700
Maximum Torque, Nm (ft-lbs) 146.2 (107.8)
Torque Speed, rpm 1600
Compression Ratio 20.5:1
Firing Order 1-3-4-2
Fuel System Indirect injection
Injection Pump Bosch Type
Lubricating system Forced Lubrication by Pump
Cooling system Pressurized
Fuel Tank Capacity, gal (L) 10.6 (40.0)
Oil Capacity, qts (L) 8.7 (8.2)
Coolant Capacity, qts (L) 7.9 (7.5)
Electrical System Rating, Volts 12
Alternator Rating, Amps 40/60

Power Take-Off
PTO Operational Type Independent
PTO Horsepower, hp (kW) 40.1 (29.5)
Rear PTO Speed, rpm 540/750
Rear PTO / Engine Speed, rpm 540/2550, 750/2250
Mid PTO Optional
Mid PTO Speed, rpm 2000

Standard Transmission
Transmission Type FST Sync Shuttle
Gearbox Type 8F/8R, Fully synchronized
Creeper Optional
Number of Forward Gears 8 (16 with creeper)
Number of Reverse Gears 8 (16 with creeper)
Clutch Type Dry type single stage
Oil Capacity, qts (L) 45.6 (43.0)
Maximum Forward Speed, mph (kph) 17.9 (28.8)
Maximum Reverse Speed, mph (kph) 14.9 (24.0)

Optional Transmission
Transmission Type GST (Glide Shift)
Gearbox Type 12F/8R, Fully synchronized
Creeper Optional
Number of Forward Gears 12 (24 with creeper)
Number of Reverse Gears 8 (16 with creeper)
Clutch Type Dry type single stage
Oil Capacity, qts (L) 45.6 (43.0)
Maximum Forward Speed, mph (kph) 17.9 (28.8)
Maximum Reverse Speed, mph (kph) 14.9 (24.0)

Optional Transmission
Transmission Type Hydrostatic (HST)
Number of Forward Gears Infinite (3-range)
Number of Reverse Gears Infinite (3-range)
Oil Capacity, qts (L) 46.5 (44.0)
Maximum Forward Speed, mph (kph) 18.7 (30.0)
Maximum Reverse Speed, mph (kph) 16.8 (27.0)

Wheels and Tires
Drive Wheels 4WD 4x4
Steering Configuration Front steer
Steering System Hydrostatic power
Brakes Type Wet disc
Front Tire Size (Std) 8.0x16
Rear Tire Size (Std) 13.6x24
Front Tire Size (Opt) 8.3x16
Rear Tire Size (Opt) 14.9x24
Front Tread, in (mm) 45.1 (1145)
Rear Tread, in (mm) 44.9-55.5 (1140-1410)

Hydraulic System
Hydraulic System Type Open Center
Implement Pump Flow, gpm (Lpm) 9.8 (37.0)
Steering Pump Flow, gpm (Lpm) 4.9 (18.5)
Hydraulic Pressure, Bar (psi) 177 (2560)
Number of Standard Remote Valves 3
3-Point Hitch Category 1
Draft Sensing or Lift Control Position control
Standard Lift Capacity 24-in (600 mm) behind pin, lb (kg) 2760 (1250)
Standard Lift Capacity at lift pin, lb (kg) 3860 (1750)
Upper Link Pin Diameter, in (mm) 0.75 (19.0)
Lower Link Pin Diameter, in (mm) 0.88 (22.4)
Lower Hitch Spacing, in (mm) 28 (718)

Dimensions and Weight
Wheelbase, in (mm) 74.6 (1895)
Overall Length, in (mm) 124.8 (3170)
Height (ROPS), in (mm) 95.3 (2420)
Height (Cab), in (mm) 86.4 (2195)
Overall Width, in (mm) 66.5 (1680)
Ground Clearance, in (mm) 15.7 (400)
Turning Radius, in (mm) 106.7 (2700)
Weight (ROPS), lb (kg) 3350 (1520)
Weight (Cab), lb (kg) 3725 (1690)

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