I saw a post on the other Fender Forum re: a fellow "unthreading" his broken Jazz Bass truss rod. He had his terminology mixed up (referring to "hex" in some weird way). The gist was that he had pulled the rod half-way out of the neck and needed advice.
Someone sad that Fender truss rods don't "unthread." I know that some don't, but I seem to recall unthreading one and replacing it quite a few years back (that is why I don't recall it exactly - I know I have done some repairs that I was quite pleased with in the past, but then years later I cannot necessarily recall "how" I did the repair).
I do know that I removed the fretboard between the nut and first fret on one Strat from the early 60s, cut the anchor lug, put in a new threaded lug, and inserted a threaded-lug-connecting truss rod by turning it into the lug with a special tool I made that captured the opposite threaded end of the truss rod and it had a set-screw on the butt-end of the rod to enable turning the entire rod. It worked. I still have the weird one-off tool in a drawer (that is how I recall that one).
By the way, many many times I find a strange caul, jig, or Rube-Goldberg-style tool from years past that I cannot for the life of me figure out what it does! Does this happen to some of you?
Anyhow, the "lifted" fingerboard piece shrank in width instantly and needed to have a matching piece grafted on before replacing. In the end the repair was invisible.
That is one repair I remember. However, does anyone know IF in some years, Fender had a threaded rod-to-lug connection instead of a peened-joint or welded joint?
I have not needed to repair such truss rods too often, and without doing some research with friends at Fender, I don't know. That thread did get my curiosity, though, and if I go back to that thread I would like to help him out.
I asked the fellow what year? what model? why did he get halfway out and stop? Which end of neck was it adjustable?, and etc. Haven't seen the answer.
Also, I made mention there of this new Fender Forum, and its sister Les Paul forum, and that I am not guitar-political. I haven't been banned there yet which I think is a good sign.
When we have the time, all of us will visit and post at guitar forums that make us feel welcome, and attract our interest. I have a good deal of time invested in these two "sister" forums, and feel as if I have made friends here. There are friends and good topics at the other forum(s) too, however.
thanks, dan