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Jeff Liebermann Jeff Liebermann is offline
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Default Removing dried WD-40

On Sun, 13 Sep 2020 02:59:58 -0500, Fox's Mercantile
wrote:

On 9/12/20 11:26 AM, Fox's Mercantile wrote:
So, my question is how do you remove it?


Using a siphon sprayer, I sprayed, in sequence, mineral spirits to
cut through the WD-40 gunk. Then hosed it with Simple Green to
finish de-greasing it. Followed by Distilled water to flush out the
Simple Green and finally denatured alcohol to get rid of the water.

I'd say it came out pretty clean.
https://cdn.discordapp.com/attachments/685910956580405312/754506691353116722/unknown.png


Looks like a Model 15 teletype machine. Yep:
http://www.aetherltd.com/images/tty15-2/typebarscleanedmore.jpg
http://brassgoggles.co.uk/forum/index.php/topic,43672.0.html

It's clean, but now you get to lubricate it from scratch. I used to
work on those when I lived in Smog Angeles, but haven't done any
rebuilds in the last 50 years. Model 15 lube and adjustment manual:
http://www.aetherltd.com/public/model15manuals/138_Model15_Adj_Oct41.pdf

The original lube was allegedly whale oil based, so you're not going
to find any of that. My guess(tm) that's why the oil turned to tar or
varnish. I think if you dig deeper, you'll find more varnish. You
may also need to tear down the main shaft. I didn't have much luck
with ultrasonic cleaning and had to use acetone to get rid of
persistent varnish.

I recall using either light clock oil or sewing machine oil which have
the advantage of not evaporating and having a stable viscosity over
some temperature range. It's been a long time, so check the forums
for the latest suggestions. If you need any help from me, forget it.
I'm busy untrashing my house after moving the entire office home.

Good luck.

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Jeff Liebermann
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