Case 310B clutch release bearing sleeve

We are restoring this tractor and have done a complete rebuild on the engine and components.The last owner and a helper treated it pretty badly and threw some things together.After installing the engine, we found that the engine would only bump around with the starter after rolling freely on the engine stand.We looked in the tranny case and the gears are fine; same with shuttle box.Changed fluid in both.It sat for some time in the weather, so now I am suspecting trouble in the hydraulic pump box.Will check it today.Clutch does not release, and after thinking long and hard, I remember that there was no sleeve in the release bearing which makes sense to me since the extra length would make the clutch work.This unit does not have the splined shaft for the hyd. pump,as the bearing rides on a fixed hub.Hydraulic is furnished by the big pump mounted on the front which drives off the crank for the hoe and loader.Case has the bearing for $125, but they don't know if it has the sleeve with it.The specs they gave are:1 7/16 i.d. 3" o.d. and 1 1/4 long.Part # G10610. Does anyone know what the number is for the sleeve? And who has it? Thanks, Bob