Actually, that bearing is the trial/dummy and it slips on and off. Luckily, the new bearing was only .0003 tight because I went the wrong way on the shim adjustment when the new bearing was thrown on and was able to press it off using a clam shell to get it off without messing it up. Kinda funny that I've been using this same setup bearing for years and have never had to make a shim adjustment before. Also, was surprised that the new bearing was only .0003 tight. Years ago my press would not move a pinion bearing at all (was just trying to get it off) so went to a local shop that had a 50 ton press and man, that thing grunted. Turned out the bearing was .005 tight!! When I saw the gauge getting close to the red, I left the room and then POW and felt the vibration in the floor. It actually pulled some metal from the pinion. Oh well.