AC Compressor Change - MBWorld.org Forums

Jul 3, 2020 | 11:57 AM

greekstylist

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W212 E550 4Matic, W211 E55 AMG

AC Compressor Change

Hi guys. A couple of days ago, my ac stopped working. The next day I started the car and the ac compressor was making a loud noise and then started smoking. I turned it off right away. My mechanic is away so I had to put a smaller serpentine belt to bypass the ac compressor. When I was putting the belt on, the pulley from the ac compressor fell off. My question is should I change the condenser and dryer with the ac compressor??

Thanks

Jul 4, 2020 | 08:32 AM

machild

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2006 CLS55 AMG, 2005 SLK 350 AMG

Quote:

Originally Posted by greekstylist

It is standard procedure to replace the condensor and expansion valve if the compressor has failed internally as the debris can clog those components. The dryer should be replaced any time the system is opened. In your case, it is not completely clear what actually failed - the external drive pulley or internally. If that can be determined then you would know your direction. If it can't be conclusively determined then take the safe route and do it all.

Jul 4, 2020 | 01:07 PM

Fountain35

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From: Virginia

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Where is the expansion valve located? I assume the dryer is easily accessible as well?

Jul 5, 2020 | 08:05 AM

machild

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2006 CLS55 AMG, 2005 SLK 350 AMG

Follow the refrigernat lines to where they go through the firewall to the interior (actually inside the heater box). The expansion valve is locate at that point - the lines will be connected to it. Dryer is near or included within the condenser.

Jul 5, 2020 | 09:24 AM

greekstylist

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Joined: Apr 2013

Posts: 106

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W212 E550 4Matic, W211 E55 AMG

Quote:

Originally Posted by machild

Thanks for the help!

Jul 5, 2020 | 11:32 AM

machild

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Joined: Jun 2020

Posts: 1,179

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2006 CLS55 AMG, 2005 SLK 350 AMG

Quote:

Originally Posted by greekstylist

Thanks for the help!

So do you have a vacuum pump to pull the system down into a deep vacuum, refrigerant guages, a way to weigh the refrigerant, a scan tool that will get into and clear the faults in the HVAC controller?