If it's a column mounted hydraulic shuttle you have no clutch at all. Your 'inching is accomplished by the loose and not clamped hydraulic pack only. Kubota has not installed a dry clutch in the bell housing for years know, They understand the principle quite well and negate a dry clutch 100%. All that is inside the bell housing is a spring loaded damper plate (to keep any shock load off the crank flange) and the input shaft for the main box. The damper plate looks like a dry clutch plate but no drive plate at all.
No clutch disc, no pressure plate no intermediate shaft, no nothing but the gearbox seal and the crankshaft seal and no wobbling that comes with a worn friction disk and the resultant seal failures from excessive run out and vibration.