Date: Thu, 4 Aug 2016 22:30:21 -0500
Reply-To: John Rodgers <jrodgers113@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: John Rodgers <jrodgers113@GMAIL.COM>
Subject: Re: Whining AC compressor
In-Reply-To: <CA+r=JhoSEOGN2Mfxw1c2Ohhr5EwS4-Q-RAKk5Ze53vCciGY_Vw@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
Larry, four years ago the system was flushed by a shop, PAG OIL added ( I
don't know how much) using some reference they had, then serviced with
R134a. It ran fine but over time slowly lost pressure until the pressure
switch turn the system off. The system has never been opened since, and
when I went to recharge it recently, it still has pressure, which meant the
seals and oil should still be there, and oil should still be good, so no
oil was added, the system was evacuated, and HFC152a added. The system
worked super well, until last weeked, and the whine began to develop. Over
several days it has gotten louder and louder. It sounds like a PS pump when
it begins to run low on power steering fluid. Only its the compressor. I've
decided to add 2 ounces of pag oil, maybe that will do the trick. If not,
then it gets a new compressor, and the system drained, and flushed before
the new compressor gets installed.
John
John
On Aug 4, 2016 17:40, "Larry Alofs" <lalofs@gmail.com> wrote:
> Was all the old mineral oil cleaned out of the compressor before the
> conversion? Any idea why PAG was used instead of ester oil?
> Were the amounts of oil added according to the Bentley recommendations?
>
> Larry A.
>
>
> On Thu, Aug 4, 2016 at 10:52 AM, John Rodgers <jrodgers113@gmail.com>
> wrote:
>
>> Is there a way to add more PAG oil to the system without venting and
>> draining the whole thing? I'd like to get through this summer heat if
>> possible and put a new compressor on for next year. Got about a month to
>> six weeks to go.
>>
>> John
>>
>> On Aug 4, 2016 01:52, "Dennis Haynes" <d23haynes57@hotmail.com> wrote:
>>
>> > It is possible your recent recharge did not include the correct type or
>> > among of oil to go with the refrigerant charge. Sometimes these
>> compressors
>> > do get noisy and they sometimes run this way for years. Sometimes they
>> > also self destruct and fill the system with pieces.
>> >
>> > Dennis,
>> > From my phone.
>> > ------------------------------
>> > From: John Rodgers <jrodgers113@GMAIL.COM>
>> > Sent: 8/3/2016 9:13 PM
>> > To: vanagon@GERRY.VANAGON.COM
>> > Subject: Whining AC compressor
>> >
>> > This on my '88 GL. Bloody ho in Alabama just now and badly needed. I
>> > recently serviced the system and it's been fine for about two weeks.
>> Then
>> > started with the whine that has gotten progressively louder. I hate it
>> but
>> > will have to run with it turned of. No experience with this. Anyone have
>> > any ideas. Really hate the idea of having to get a new compressor just
>> now.
>> > Pricey!
>> >
>> > Thanks.
>> >
>> > John
>> >
>>
>
>
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