[Hallicrafters] SX-71 chassis restoration, Naval Jelly question

[Bob Raley]

Phil would you mind sharing anything you get in response to your questions.
I'm going through the same thing right now with an SX-100.  I need some new
ideas too.  I finished up an HT-32 last year with the same type of rust
problems too.  I used stainless steel brushes--Dremel tool with wire brushes
installed---sand paper as you mentioned and naval jelly also. Q-tips come in
handy for applying the naval jelly and for clean-up too.   I used mineral
spirits to neutralize the naval jelly.  I then masked everything off,  I
didn't want paint on, and then used Rustoleum brand aluminum spray paint.
The blue colored masking tape seems to work well because it's designed to
come off readily and not leave any tape residue.  It came out looking pretty
good.  These are the things that worked for me but I'm sure others in the
group want to know what you learned.
Good luck with the project.............Bob Raley kg5r

----- Original Message -----
From: "Phil Atchley" <k06bb at elite.net>
To: <hallicrafters at mailman.qth.net>
Sent: Wednesday, April 10, 2002 10:44 PM
Subject: [Hallicrafters] SX-71 chassis restoration, Naval Jelly question


> Hello all
> Well the SX-71 refurb is coming along well.  Since the capacitors haven't
> arrived yet I decided to do some "top of the chassis" work.  As there was
a
> significant amount of rust spots I anticipated this job taking quite some
> time to accomplish.  However, working on it with Naval Jelly (#3 for
severe
> rust), wet/dry paper etc I managed to do about 2/3rds of the chassis top
> this evening and while it will definitely be "spotty" with shiny "sanded"
> spots etc it is coming out much better than I'd hoped.  I first took the
> time to cover all tube sockets with masking tape and trimmed around them
> with the Xacto knife to keep the holes clean.
>
> Questions:
> 1.  After removal of the Naval Jelly I carefully washed the chassis with
wet
> paper towels then viguoursly scrubbed it with WD-40 soaked paper towels to
> make sure all residue is gone.  But I wonder.  Naval Jelly is an acid.  Do
I
> need to 'neutralize' it with something (like baking soda water etc) or is
> the washing/oiling good enough?  At one point I considered "hand brushing"
> it with silver or aluminium paint to protect the chassis against further
> rust (I don't want to use a "spray" paint around the tuning caps etc)
>
> 2.  What is the best way to replace the very funky rubber bushings on the
> tuning capacitor and what size grommets were the originals?
>
> 73 de Phil  KO6BB
> Loving home provided for wayward Boatanchor Receivers
> k06bb at elite.net
> Merced, Central California
> 37.18N 120.29W CM97sh
>
>
>
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