Howdy all, I'm in the midst of rebuilding a 12a from an '85. One of the stationary bearings was worn down to copper so I'm replacing both stationary bearings. I could use some advice on the rotor bearings though. Neither is worn to copper and both are in the same condition. There's just discoloration in the bearing material. Do these look ok or should they be replaced?

Thanks for the advice.

 

From my experience, you'll see cooper once they start the wear. Seeing cooper in itself isn't a reason to replace them. Those to me don't look bad.

They are about $42 each new. Of cource, you need a press and the install bearing tool to replace them.