Seized balls on rod rig

[phorvati]

I have just finished disassembling nitronic 50 #10 rod rig as part of the checkup before extended cruising. The external navtangs and turnbuckle screws came apart very easy(pretty much by hand). But at the lower ends of the shrowds the rod end(stemball) is seized to the turnbuckle fitting. The intermediate shrowds have turnbuckles with #6 rod and stemball is seized on one side. The other turnbuckle fitting is free to move up the rod. So far I've been trying to hammer the turnbuckle with the wooden mallet up the rod while keeping the rod in a vice. No movement whatsoever.
I've had mixed advice on using heat with nitronic 50 so I don't dare using it. Are there any other ides on how to separate the seized pieces? Is it even worth it bothering with seized pices as opposed to just re-headding the lower ends. I have plenty of threads left on each of the turnbuckles.
Sincerely
Petar

[Renoir]

Spray Corrosion Guard (or similar product) to penetrate the assembly. let "soak" for 24 hours. Place the whole end into a bucket of ice water. Let soak for 20 min. Meanwhile heat up a hot pad on high. Pull out assembly, wipe off and wrap surrounding metal with hotpad avioding contact with the rod as much as possible.

Affix rod into a Workmate (or similar device with soft jaws), use an air chisel with a blunt end against a block of wood (may take a helper to have another set of hands) to "hammer" with a higher frequency than manually is possible to shock warming metal longitudinally against affixed rod.

Good luck with patience and tolerance.

[Brion Toss]

Hello,
Nice series of unseizing tips there, Renoir. I'll just add that, even if one's rod ends are not stuck, reheading after a few years of significant use is a very good idea. Might be a good idea to look at a new rod end with a microscope, then at these. Act accordingly.
Fair leads,
Brion Toss