Reply to "WTB Spicer Half Shafts"

I had a problem with the original half shafts in my '71. At 30k miles, the u-joint caps were rotating. I was heavy into preventative maintenance, so I knew that lubrication was not the issue.

Upon disassembly, I found plenty of grease and no flat spots on the trunnions or the needle bearings. What I did find was that all of the yoke bores were extremely rough. This was not caused by the u-joint caps slowly rotating, as some of the caps had not rotated. The yoke bores looked as though an extremely rough cut had been made with whatever "boring" device was used, and it was not followed by a finish cut. In this case, the "high spots" of the "rough cut" appeared to be approximately equal to the required final finished diameter. If a clean-up (or finish) cut had been made, the u-joint caps would have fallen through the bores.

I had to go over a few heads, but I got Ford to give me two new half shafts.

John