Date: Mon, 4 Jul 2011 11:17:29 -0500
Reply-To: Peter Lapp <carrothospital@GOOGLEMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Peter Lapp <carrothospital@GOOGLEMAIL.COM>
Subject: Re: Flush the A/C system - How do I do it?
In-Reply-To: <4E110C4A.8080305@charter.net>
Content-Type: text/plain; charset=ISO-8859-1
There may be more than one way to do it, but I did mine not too long ago
with some help from the Samba. All you need to flush them out is an air
compressor and some flushing liquid. There's apparently some sort of air
brake dryer fluid for big rigs that's supposed to work well, but I couldn't
find it and just bought some generic flush liquid from NAPA. You can do it
in sections, if you're replacing the o-rings and all, or just with the high
and low hoses in the engine bay. Although, I don't think you're supposed to
flush through the expansion valve or receiver/dryer.
Just put some of the liquid into one hose, stick the compressor end up to it
and blow until it comes out of the other side. Repeat until in comes out
clean and then push some more air through there to make sure it all dries
out.
Also make sure you drain the oil out of the compressor and refill it.
After that you're ready to put things back together, pull a vacuum on it,
and charger 'er up.
-p
On Sun, Jul 3, 2011 at 7:41 PM, John Rodgers <inua@charter.net> wrote:
> All the parts should be here next week for my restoration of my A/C
> system. The compressor has been out of the van a long time. The plugs
> that were in the ends of the high and low pressure lines where they
> connect to the compressor are gone - for how long is anybody's guess.
> The lines are open. It's anybody's guess as to what's in there. Mud
> Daubers nests, dead lizard, dirt, or whatever. I'm sure I need to flush
> those pipes with something, but the questions are - 1) with what, and 2)
> how? I question the need to hire a garage to do this. And after
> re-reading Jim Felders small treatise on how to convert to R134a I'm
> sure I can do this conversion myself - but I am unsure about
> cleaning/flushing those pipes. I seem to remember somewhere back in
> time someone said to use something from the trucking industry that is
> used in brake maintenance, rather than the really expensive stuff the
> A/C shops want to throw at you as a system flush. But for the life of
> me I can't remember enough of it to hunt it down.
>
> Any suggestions?
>
> Thanks,
>
> John
>
> --
> John Rodgers
> Clayartist and Moldmaker
> 88'GL VW Bus Driver
> Chelsea, AL
> Http://www.moldhaus.com
>
| 
