Noisy 500

[bondoboat]

Hi all,
My mid 80's 500 developed some noise the last time I used it and now I finally have the time to do something about it. The noise only happened at certain speed ranges and I could minimize it by adjusting the speed. Turns out that the retaining clip on the "porkchop" was missing and the shaft was rubbing against the spring steel on the porkchop face. There are a few wear areas on the face of the porkchop, and the shaft itself no longer has a rounded end -it has worn flat to some extent. So here are my questions:
What parts should I replace? Does the retaining clip hold the shaft away from the porkchop? If so, can I get away with just replacing the retaining clip? All else looks good. Thanks in advance for the help.....BB

P.S. This is the way I bought the machine this winter and I finally have time to tear in to it.

[JPG]

Hi all,
My mid 80's 500 developed some noise the last time I used it and now I finally have the time to do something about it. The noise only happened at certain speed ranges and I could minimize it by adjusting the speed. Turns out that the retaining clip on the "porkchop" was missing and the shaft was rubbing against the spring steel on the porkchop face. There are a few wear areas on the face of the porkchop, and the shaft itself no longer has a rounded end -it has worn flat to some extent. So here are my questions:
What parts should I replace? Does the retaining clip hold the shaft away from the porkchop? If so, can I get away with just replacing the retaining clip? All else looks good. Thanks in advance for the help.....BB

P.S. This is the way I bought the machine this winter and I finally have time to tear in to it.

The 'shaft' should have a bearing with a button that touches the porkchop. The 'clip' is mounted to that button and wraps around the end of the 'porkchop' The bearings purpose is to present a non-rotating surface to the porkchop. The clip is to make it 'non-rotating'.

FWIW the button/bearing are a part of the control sheave, not the idler shaft.

[bondoboat]

Turns out that the bearing that mounts inside the sheave is shot.
BB