Thread: R12 Vacuum
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Old 09-06-2021, 01:04 PM   #5
Katrina/10
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Join Date: Oct 2010
Location: Ocean Springs, MS
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Re: R12 Vacuum

The high side adapter looks like this: https://www.ebay.com/itm/153812368295

You attach it to the evaporator inlet then screw on your yellow jacket hose.

If you get no pressure reading on the gauge, there is something wrong with the valve or hose. Or, no refrigerant.
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1971 Chevrolet C/10
1951 GMC 100
1977 GMC C15
1955 Chevrolet 3100
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