Okay, I found the problem and I doubt anyone has seen this before, neither me or my mechanic has. The wing nut jumped the threads and that's how I lost most of my clutch pedal. Here's the story;
First, we had a very difficult time getting the wing nut off and when we did and pulled the cable, it was not frayed or partially broken. That had us stumped, where did all of my pedal go then? Upon inspection we noticed that the threaded end was bent and the middle portion of threads were worn down with the diameter smaller, which was perplexing.
As we installed the new cable we hit some snags, literally. The cable stopped dead in It's tracks and when forced, you could hear the clicking of the threads as each one cleared some obstruction. We couldn't get it through and suddenly the bend in the pulled cable took on some meaning. After bending our threaded end and spending a lot of tine rotating its position and forcing it, we got it past the obstruction...only to find a second one. This one was even more difficult and we were about to give up and shorten the threaded rod by 1/2 inch when suddenly, we found the right angle of attack and it went through. (We are now about 90 minutes into this "quick" clutch cable change.)
However, when the cable came out you could see that the threads took some real abuse, not as much as the original cable but it was clear what happened to it and why the threads failed. My mechanic thought there was an obstruction in the tube from when the frame was shortened and the tube welded together. However I talked to Kirk and he said they don't weld the tubes anymore, they shorten them, so that wasn't it.
My mechanic wondered if when they tack the tube to the frame if the weld burnt through a bit and caused the obstruction? Like I mentioned earlier, you could hear the threads clicking by the obstruction one-by-one.
So now the mystery is solved, the wing nut jumped the tracks. And the why is solved too; the threaded rod was worn down by forcing it passed the obstruction. But the question remains; what can I do to clear Out the obstruction from the tube? Over time, might the snags wear down the cable?
The only idea I had was to build a roto-rooter with a little grinding head on it and try to rotate it with a drill. But I don't know what type of cable or shaft that small would work. My mechanic says to leave it alone.
Any ideas?
Anyone seen anything like this before?