clicking / pebble sound in multi port valve

[fasttruck9]

I have the same problem, does anybody know if this is affecting the operation of the valve/pump??? I changed the spider gasket with the same result, o-rings on the shaft? I thought it was pebbles in the pump basket but further investigation proves to be the American multi-port valve, any help out there?
Thank you,
Wayne

[PoolDoc]

I really don't know, without hearing the sound myself. You can possibly make a video with your camera or phone, upload it to YouTube, and give us the link.