What Does This Part Do? - Mercedes-Benz Forum

 
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post #1 of 2 (permalink) Old 06-10-2013, 03:05 PM Thread Starter
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What Does This Part Do?

What Does This Part Do?
I'm in the process of flushing my AC system, because I sucked about 100cc of vacuum pump oil into it when I evacuated it. So, I had a local Indy, who admits he doesn't know too much about this particular system, blow compressed air through the suction lines in the attached photo.

The result was that no oil came out, but he thought that the canister on the high pressure line may be stopped up, because the pressure of the air coming out of the hose didn't seem to match the pressure of the air going into the hose.

So, now I'm wondering what that canister has in it, what it does, and whether I really need to replace these hoses, as they're around $500?

Thanks in advance for the info.

Bill
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post #2 of 2 (permalink) Old 06-10-2013, 10:50 PM
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That may be the older style expansion valve.

Blasting it with air is not the way to flush it. Most AC shops have a flush machine that uses some sort of solvent cleaner like the one in the link.
Johnsen's 6544 - A/C Flush | O'Reilly Auto Parts
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