Karen
Keep us informed ...
Mike in NS

On Sat, Mar 28, 2015 at 11:39 PM, KB wrote:

> well, I guess we don't get any AC this trip (as usual).
> I pulled the compressor, dumped out the oil (a little under 4 oz) and per
> the manual refilled with 6 oz fresh oil.
> The old oil was green, which I hope is from the refrigerant dye.
> Otherwise...hmmm...
> Installed the pricey new expansion valve, pulled a vacuum, let it sit to
> check for leaks, charged with three 6oz cans.
>
> If anything, it's worse than before. At idle, the low side is about 18,
> and the high about 120. My better
> half wasn't here to hold it at 1500rpm, but clearly it would have been
> even lower. Cooling is virtually nonexistent,
> though the lines were sweating on one side and mildy warm on the other
> after a few minutes.
>
> Must be the compressor I guess, as unlikely as that seems. I don't know
> what else it could be.
>
> thanks for all the help.
>
> Karen
> 1975 26'
>
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--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS

Life is too short to hold a grudge; slash some tires and call it even !
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But, what was the problem, Karen?

Has Jim proven that the compressor was actually bad to begin with? Could
the same problem be what is plaguing Richard?

How does one prove a compressor good anyhow?

bdub
www.bdub.net/GMCLinks.html

On Aug 13, 2015 2:45 PM, "KB" wrote:
>
> Just an update on the AC system problem I was having a while back...
>
> To summarize, I had installed a brand new aluminum compressor from
Applied, but no matter what I did could never get good pressure or cooling
out of it, despite changing every single part of the system (in some cases,
twice), and trying all different levels of charge with a duracool
equivalent. And yes, I did all the required flushing, vacuuming, oil, etc.
>
> In the end, I gave up, pulled the new compressor, slapped a new rear seal
on the leaky old compressor, and reinstalled.
> We now have decent cooling again (well, decent for a GMC anyway).
> Thankfully, JimK was gracious enough to take back the new compressor, so
all I'm out is the expensive hoses the new compressor ate, a case of
refrigerant, and the numerous parts I replaced while trying to solve the
problem (plus a lot of time, frustration, and several hot road trips).
>
> Hopefully we'll get a few trips with working AC for a change.
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