I'm helping a friend replace the u-joint/carrier seal in his 83 or 84 Alpha. I suspect the unit may have been run a short distance low on fluid. In looking at the top cover bearing, the bearing cage has more play than I would expect. Outside of the bearing itself, what is needed to properly replace this bearing tool wise? I have the Merc manual, but it more/less says remove and reinstal the bearing, but it seems pressed on?