Nice clean engine compartment! Hard to tell from video, but it does look to vibrate. If with engine off you can wobble the pulley then that’s not good, you are probably correct about bearings. Better inspection would be to pull the belt off, the pulley should not wobble or have any looseness, and also if you spin the pulley there shouldnt be any clicking or loose pebble sounds from inside (shattered vanes). Mine had this latter problem.
Is there much if any difference between the 60 and 62 air pump? I have a 62 and it seems like the bearings must be worn. At low RPM it wiggles quite a bit, once up to higher RPMs it seems to smooth itself out. But not perfect.
Whats the team think?
Seems like buying parts for a rebuild is tough, unless someone has better ideas.