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Date:         Thu, 3 Jul 2003 17:11:52 -0400
Reply-To:     Jim Henry <jch@JCHGIS.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Jim Henry <jch@JCHGIS.COM>
Subject:      Re: R134a in 88 Weekender.
Comments: To: John Connolly <john@AIRCOOLED.NET>
In-Reply-To:  <003301c34176$bd35ec80$c808010a@officemainhub>
Content-Type: text/plain; charset="iso-8859-1"

Good deal, John

This sounds like a very fair trade to me. wish I was on my way to SLC, I like pizza too. The described effort cost me $300 (with some new hoses)to switch to 134, but it is still cool 3 years later. Refill with R12 would also have been $300.

Happy 4th to all,

Jim Henry Durham, NC 84 westy

-----Original Message----- From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM]On Behalf Of John Connolly Sent: Thursday, July 03, 2003 11:21 AM To: vanagon@GERRY.VANAGON.COM Subject: Re: R134a in 88 Weekender.

Ratz!

You also do not flush out the expansion valve.

Remove the dryer, disconnect the compressor, and remove the expansion valve. Blow out the hoses with WD40 or mineral spirits; I used a compressor. LOTS of crap and old oil will come out, so dont' wear any good clothes. If at all possible, blow out in the reverse direction of "flow" when the system is operational.

I blew out the high pressure line from the compressor, which went to the condensor (radiator), then back to the dryer (left rear wheel). I caught the debris in a cut out 1 gal milk jug.

Then blow out the Low pressure line from the expansion valve (disconnected) to the compressor. Last one is the evaporator (this one is a pain, you have to drop it down, but you had to do that anyways to replace the expansion valve). When you assemble, go to Pep Boys or your local FLAPS, and bring the O-rings there (there's 2 on the dryer, 4 on the expansion valve, and 2 on the compressor) and match them up. This results in a LOT lower likelyhood of leaks.

Then evacuate and see that it maintains it's vacuum, so you don't find out after charging with some expensive refrigerant (wasting $). The compressors hold oil in them, the 508s hold about 5-7oz, the 709s hold a little more. Use the oil that's compatible with the refrigerant you will be using, the rest is cake.

Anyone in Salt Lake can come over for an evac and charge if you do the above to your system, but you have to buy my little girl a pizza (I'll likely have some too). :-)

John Aircooled.Net Inc.

John Aircooled.Net Inc. .


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