Should this piece be rotating or fixed/stationary
I have replaced my rear wheel bearing, and noticed the circled grey piece,
the round piece under the ABS sensor, is just spinning around like a washer
behind the wheel bearing. Should this be moving or is this piece supposed to
be a stationary part? If stationary, what is it that I need to replace? The noise
that I thought was the wheel bearing still persists, and I suspect it's due to
this "washer" spinning around when it shouldn't be.