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Finding Leak in 240 a/c 200 1990

posted by  Marlin Mangels on  Mon Mar 19 11:21 CST 2012
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last visit: Tue Oct 21 15:41 CST 2014
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Here's what I did today: Remove and drain compressor. Flush lines. Replace all o-rings, dryer, expansion valve. Re-assemble. Draw vacuum for 30 minutes. System didn't hold vacuum for 30 minutes, so I re-tightened all connections and repeated.Questions: Does the compressor oil go in the opening on the top of the compressor or in the high/low hose fittings? Where do I get the black stuff to go around the expansion valve? If it doesn't hold vacuum the second time, can I put the 134a + dye in to look for the leaks? Thanks.
Marlin

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