Mercedes-Benz Forum - View Single Post - Second set of eyes on AC project
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post #3 of (permalink) Old 04-14-2019, 05:41 PM Thread Starter
papaghiro
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Date registered: Apr 2019
Vehicle: 2005 ML-500 SE
Location: Arizona
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I don't think I can call it a full charge, but a treatment of the off the shelf AC Pro quick fix does take 2 to 3 weeks before the AC runs hot again. Another treatment will get me 2 to 3 weeks again. I did check over the rest of the system with the UV light. no other leaks show up. Compressor is clean and both lines for low and high pressure look clean under the UV light. Condenser was replaced about 2 years ago at the dealer , and it shows no leaks. even the schrader valves were showing no leaks. The pictures are the only place I see a leak with the UV.

I think my main concern is that i am not sure what I would see if the evaporator had a leak. From what I have read that is a full removal of the dashboard and would go well beyond my time to work on the vehicle. I was hoping someone may have had to change their expansion valve and saw the same leak pattern as in the pictures.

Thank you
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