How to clean ac compressor and lines before sealing system?

2005 FORD FIVE HUNDRED
120,000 MILES • 3.0L • V6 • 2WD • AUTOMATIC
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DAVENOOB
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Im replacing my ac compressor, dryer, and expansion valve. I have new rings to seal but I'm not replacing the lines. How should I clean the connecting parts by the rings before reinstalling? Wipe with alcohol then apply thin layer of pag oil? Thanks
Jun 9, 2025 at 1:35 PM
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STEVE W.
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Wipe them down with alcohol or similar, inspect for any damage or corrosion and install the new o-rings. Then apply just a quick wipe of the proper oil and tighten them down.
Jun 10, 2025 at 9:28 AM
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DAVENOOB
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Cool that is what I thought!
Jun 10, 2025 at 9:45 AM
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DAVENOOB
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Clorinated brake cleaner is what was suggested by someone but thought alcohol would work. I don't need to scrub just make sure is clean surface. Thanks again.
Jun 10, 2025 at 9:48 AM
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STEVE W.
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Don't use brake cleaner, the fittings can corrode from the contents. Alcohol will remove any crud without damaging anything. No scrub needed.
Jun 10, 2025 at 11:42 AM