993 RS Pulley or Bosch Alternator Bearing Sound?

[Funracer]

Just installed the Rothsport RS pulley. Is the whirring sound in the background always there with the RS pulley or is that sound a bearing on the way out?

https://youtu.be/j_7yk6lvRxY?si=CSAHxyNoH0nYEW12

Thanks

[GH85Carrera]

Take the belts off, and spin the alternator by hand. You can usually feel a bad bearing. When my alternator bearings were dying, they were sounding like a small concrete mixer.

I tried to get it rebuilt locally, but there are no more alternator shops in business in this area. I had to replace the alternator wit a new Valeo. All is well now.

[Funracer]

Originally Posted by GH85Carrera

Take the belts off, and spin the alternator by hand. You can usually feel a bad bearing. When my alternator bearings were dying, they were sounding like a small concrete mixer.

I tried to get it rebuilt locally, but there are no more alternator shops in business in this area. I had to replace the alternator wit a new Valeo. All is well now.

Just went through this. The one in the video was def bad. Ended up with a new one as well.

Cracked Fan