[Hallicrafters] Grommets for tuning caps

[Lee Bahr]

Bob:
I have done a lot of radios but never anything like you propose.  I would be
very leery of doing something like this unless absolutely necessary.  Can't
you blow in some electrical cleaning solvent or tuner cleaner from an
aerosol can to clean the variable cap?  Before doing this grommet
replacement, if necessary, could you replace the old one using a new one
(grommet) by cutting the new one on one side and then pushing it in place
without removing the variable caps?  Then maybe some black silicon rubber
over the splice?  I don't think there would be a lot of wear and tear or
movement on the new cut part for it to ever fall out by making the repair
this way.  If nothing else, it would save you a lot of time and accomplish
the goal.  This type repair would hardly be noticed.
Lee Bahr, w0vt
Houston



> I am cleaning up a straight and original but rather grimy SX-71, and would
> like to remove the tuning caps to de-grime them - this raises a perennial
> issue with boat anchors, ie wot the heck do you about those cracked and
> perished gum rubber grommets that sit between the capacitor and the
chassis.
> I see AES sells something similar titled "gum rubber chassis mounting
> washers..." for around a buck apiece, in various sizes. I think the SX-71
> would use the 7/8" size.
>
> Can any of you experienced halli folk comment on these?
>
> thanks in advance for any help - this is a great list :)
>
> Bob Bennett, Maple Vly, WA
>
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