Help with cleaning small miltipin connectors.

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Help with cleaning small miltipin connectors. Blabber 04-02-2007
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Posted by John Johnson on April 4, 2007, 5:05 pm

> >
> >> Any suggestion on a cleaning fluid to use that will be hard on the
> >> gunk but not on the connector or wiring?
> >
> >
> > Aren't you listening?
> >
> > Technical Grade A Isopropyl alcohol (99.9% pure)... Not the shit you
> > buy at the drug store, rather the good stuff we use in the electronics
> > world to clean up after soldering... It's a hell of a solvent, won't
> > harm de-energized electronics, and dries without a residue...
> >
> > http://store.hvchemical.com/browse.cfm/4,102.htm
>
> The same thing is supposedly available for
> de-icing fuel lines, at your local auto parts.
>
> Hot, high-pressure water can do wonders,
> as well.... take the bike to the car wash!
>
> Your connectors may need to be retensed...
> silicone grease is often spec'ed for lamp
> base application, it's not supposed to be
> bad for electrical connections, is it?

WRT the earlier post about it being burned up, that's a problem if
you've got arcing in your connector (which is bad anyway, but does
happen sometimes). Petroleum-based dielectric greases don't decompose to
silica, but to carbon (which can affect your connection too, but that's
another story).

The upshot is that so long as there's a quality metal-metal contact, you
should be fine. Anything else is begging for problems. That's why I cut
out the alternator-wiring harnness connector on my VFR and soldered the
junction. I never open that connector, and it doesn't need to be removed
for any purpose short of alternator or main harness removal, so the
quick-connect does me no good (versus the quick connect on my
turn-signals, which is quite handy when I remove a fairing). The OP
might, depending on the connection, consider omitting the quick-connect
(though if it's that small, I doubt this is going to be a favored
solution).

--
Later,
John

johajohn@indianahoosiers.edu

'indiana' is a 'nolnn' and 'hoosier' is a 'solkk'. Indiana doesn't solkk.

Posted by Blabber on April 3, 2007, 1:55 pm
Thanks for the suggestion Robert, but the connector, pins and pin holes are
much too small to permit the use of a tooth brush.


>
>> Anyone have any ideas on how to remove silicon dielectric grease from
>> small multipin bike connectors? I'm looking for something that I can
>> soak the connector in or spray on (since the pins are too small to clean
>> directly). Thanks for any advice.
> Tide soap and water? Liquid dish soap? And a toothbrush.
>
> Robert
>


Posted by Dave H. on April 3, 2007, 9:41 pm

"Blabber" wrote...
> Anyone have any ideas on how to remove silicon dielectric grease from
small
> multipin bike connectors? I'm looking for something that I can soak the
> connector in or spray on (since the pins are too small to clean directly).
> Thanks for any advice.
>

Whatever you use, get that silicone crap away from anything electrical!

Silicones subject to arcing decompose, leaving a residue of silica (yep,
sand, like on sandpaper) - if this is between mating surfaces or contacts it
wears away any protective plating or contact material, and also embeds
itself in the base metal so that it can carry on wearing away (for instance)
your nice expensive non-repairable switchgear...

You can buy mineral greases designed for electrical contacts which don't
cause this problem - the yellow or red stuff sold for battery terminals is
pretty good, waterproof and corrosion inhibiting.

Hope that helps,
Dave H. (The engineer formerly known as Homeless)



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