Thought I'd share what it took to remove my pitman arm.
I removed the steering gear from my 80 C10 to re-seal the leaking input and output shafts.
It looked to be the original pitman arm and to my surprise it was still good. Had planned to replace it with a moog unit, but in the end decided to re-use it.
Had never had such a difficult time removing a pitman arm before, I used a 24" breaker bar combined with a 24" cheater pipe...