Several years ago I ran one of these in a Jeep axle. Worked okay. Some quirky side affects. It applies itself when power is applied. The spider gears are removed. This unit goes in their place. When power is applied the spider gear pin going thru the center forces the notched pieces outward and causes engagement. So every time you apply power, it's locked.
Imagine this. Slick conditions. FEL bucket full of material. 4wd engaged. Front wheels turned for sharp corner. Add power. Unit engages. Front wheel on inside of turn needs to travel "X" distance. Front wheel on outside of turn needs to travel "Y" distance. Locker says nope, you both are going to travel same distance. Something has to give. First thing it will try to do is straighten the front wheels. Next, one tire has to skid, one has to spin.
For this reason I quit using it. Extremely stressful on axle components. Severely limited power turns.
Contact Kubota and see what they say.