We have a 1953 JD "50" that developed clutch problems all of a sudden.It just quit moving.If I feathered the clutch lever I could get it to move a little.I took the clutch assembly apart but the clutch discs look good.They only measure .006 thinner than new ones.So I think it is a linkage problem in behind the belt pulley.I aqm not sure how to take the belt pulley off. By the book it looks like you take off a snapring and the assembly slides off the shaft but there is like a dust cap there first.I don't see a way of removing this to get to the snapring without ruining it.Is this the right way or does the belt pulley come off a different way? Thanks for any help!!!!!!!!!!!!