BADASS of New England

An automobile club for the enthusiast who enjoys the last of the big GM cars. The rear wheel drive B and D bodys. Chevrolet Impala SS, Caprice, 9C1, Buick Roadmaster, Oldsmobile Custom Cruiser, Cadillac Fleetwood
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 AC Tools ...

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Posts : 2167
Join date : 2009-01-21
Age : 30
Location : NH

PostSubject: AC Tools ...   Sat May 08, 2010 10:41 pm

The AC in almost all of the cars I have owned hasn't worked. It's time for a change.

I am thinking of getting a cheap gage and vacuum pump from Harbour Freight.

They have a single stage 2.5 CMF 75 micron vacuum pump or
a two stage 3 CFM 3 CMF 25 micron pump.

Would the smaller pump be good enough?
Anyone know any place else for cheap AC service tools?

I think I also need a can tap and a thermometer would be nice.
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Posts : 2167
Join date : 2009-01-21
Age : 30
Location : NH

PostSubject: Ice Cold!!!!   Fri May 21, 2010 12:52 am

I'll answer my own question.

The cheaper pump sems to work fine.

50° drop! And that's with slightly less than 24 oz. of freon (should be 28 oz.) and an accumulator recyled from another car.

I might still have a leak or maybe I just didn't tighten a hose enough. I got impatient and wanted to know if the compressor was good since I never had it running in this car.

I suspect that HF gauges aren't very accurate. My low and hi pressure readings were a little higher than they should have been.

If it's hot I may just pop a stereo in, skip NED, and drive around all day Saturday. Smile

Anyone know of a local source for pump oil?
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Posts : 1691
Join date : 2009-03-12
Age : 46
Location : Southern, NH

PostSubject: Re: AC Tools ...   Fri May 21, 2010 5:08 pm

Swing over to the shop in Nashua and we can hook up good gauges.
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Posts : 2167
Join date : 2009-01-21
Age : 30
Location : NH

PostSubject: Re: AC Tools ...   Fri May 21, 2010 7:38 pm

I was reading the temperature gauge wrong it seems IR thermometers are subject to temperature changes. It looks like I do have a leak but there is light ahead. Smile

Thanks maybe I could get idea of how far my gauges are off. The compressor was cycling when the low pressure read above 25.
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Posts : 2167
Join date : 2009-01-21
Age : 30
Location : NH

PostSubject: Re: AC Tools ...   Mon May 31, 2010 12:02 pm

After spending about $500 it looks like the AC is now working. Good thing the compressor was OK. Smile

Need more pump oil now, maybe Total Air in Nashua.
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