[Stonne]

Ah...had a thought...are you thinking of the C-clip that holds the assembly together?

Bob

No the C-clip is still in place. When I removed the assembly I found a small piece of what appeared to be a rubber o-ring in the slot that is at the end of the shaft, as seen in the photo. I maybe wrong. I followed the link to the Philco Repair bench site and the assembly that was mentioned looked like it had a gear on the end of the shaft. My assembly has a groove at the end, which I think would be for a o-ring causing a friction fit to the variable capacitor. 

Thanks
Sean