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How to clean used cylinders?

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Ralph A. Schmid, dk5ras

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Aug 26, 2009, 2:48:11 PM8/26/09
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Hi,

I have got a complete GMK system of euro profile locks, more than 70
locks, single keys and MKs/GMKs.

Now I wonder if there is some way to clean them, maybe ultra sonic -
but what cleaning agent? The problem is that many of them have
collected a almost black dirt from dust and cylinder lock lubricant
that makes the keys dirty. The keys then tend to cause dirty hands and
clothes :-)

-ras

--

Ralph A. Schmid

http://www.dk5ras.de/ http://www.db0fue.de/
http://www.bclog.de/

Skipfromla

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Aug 27, 2009, 12:49:37 AM8/27/09
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On Wed, 26 Aug 2009 20:48:11 +0200, "Ralph A. Schmid, dk5ras"
<ra...@radio-link.net> wrote:

>Hi,
>
>I have got a complete GMK system of euro profile locks, more than 70
>locks, single keys and MKs/GMKs.
>
>Now I wonder if there is some way to clean them, maybe ultra sonic -
>but what cleaning agent? The problem is that many of them have
>collected a almost black dirt from dust and cylinder lock lubricant
>that makes the keys dirty. The keys then tend to cause dirty hands and
>clothes :-)
>
>
>
>-ras

Sounds like a little too much graphite in there. I use brake or
carburetor cleaner that's basically diesel oil under pressure. It
works quick and dries quick. If that won't get them clean I use WD
40, let it sit for about 5 minutes, dry the cylinder and then use
brake or carburetor cleaner again.

Word of caution, don't use the carburetor or brake cleaner in enclosed
spaces or by an open flame. Diesel oil has a higher flash point than
gasoline but why take a chance?

Ralph A. Schmid, dk5ras

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Aug 27, 2009, 2:09:42 AM8/27/09
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Skipfromla <skipf...@yahoo.com> wrote:

>Sounds like a little too much graphite in there. I use brake or

In some of the locks, yes, it looks like graphite, in others just the
dirt of three decades.

>carburetor cleaner that's basically diesel oil under pressure. It
>works quick and dries quick. If that won't get them clean I use WD
>40, let it sit for about 5 minutes, dry the cylinder and then use
>brake or carburetor cleaner again.

The carb cleaner is a good idea, this stuff is tough :) At the moment
I am doing some tests (two cylinders) with alcohol in the ultrasonic
device. I really want to avoid cleaning 70+ locks by hand :-)

>Word of caution, don't use the carburetor or brake cleaner in enclosed
>spaces or by an open flame. Diesel oil has a higher flash point than
>gasoline but why take a chance?

Of course. We handle such stuff regularly, and the necessary
prevautions are taken.

harkawy

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Aug 27, 2009, 5:41:00 PM8/27/09
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I used an ultra-sonic cleaner filled with LPS-1. Set the timer for
about an hour and walk away.
The ultra-sonic cleaner with LPS worked great on older removable safe
heads to clean out the rust. I made a "butterfly" out of a 6" length
of 1/4" aluminum rod. I cut a slot about 1" down one end. I then
folded a piece of sandpaper and placed it into the slot, grit side
out. The normal speed of a drill motor and the butterfly does wonders
to the bolt holes. Works like the tool mechanics used to clean out
the inside of wheel brake cylinders.

On Aug 26, 11:09 pm, "Ralph A. Schmid, dk5ras" <ra...@radio-link.net>
wrote:

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