Anyone know what a "dehydrator" from our AC/Heat systems does?
Thread Starter
Senior Member
Joined: May 2010
Posts: 293
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From: Collierville, TN
E55
Anyone know what a "dehydrator" from our AC/Heat systems does?
This is the 16" long cylinder mounted under the E55 heat exchanger. Mine appears to be leaking a neon green fluid/mist from the connections. There appears to be 2 hard lines that connect to the dehydrator and the hardlines connect at a connection block and additional hardlines look like they run to the compressor. I have this green dried mist around both sets of connector areas and there was some runoff sitting on the splash shield.
My question is what is the neon green fluid? I located a new dehydrator on parts.com but, can I remove it or will I allow all the freon/coolant to escape the system? Anyone ever had this issue?
Thanks,
Todd
My question is what is the neon green fluid? I located a new dehydrator on parts.com but, can I remove it or will I allow all the freon/coolant to escape the system? Anyone ever had this issue?
Thanks,
Todd
Senior Member
Joined: Jan 2006
Posts: 291
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06 E55, 03FORD P/S,01 E320-4M,99 ML320,O4 E55,05 RUBICON UNLIMITED,
THAT IS YOUR DRIER AKA NEW VERSION OF THE RECEIVER/DRIER,THE GREEN YOU SEE IS DYE.YES,IF YOU OPEN IT UP W/O REMOVING THE R134A(RECOVER IT W/ A MACHINE) YOU'LL GET A NICE PRESSURE BATH OF GREEN ALL OVER THE PLACE.
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Joined: Jan 2008
Posts: 83
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2018 E63s, 2004 E55 AMG
Ya MBTEK is right, that green stuff is die/oil that is put into refrigerant. I don't know what the connectors look like under there but is there anyway you can tighten them up? You're probably going to have to take the car to a mechanic that can evacuate the system with a special recovery machine so the drier can be removed. Releasing the refrigerant youself is not the smartest thing as R-134a isn't great for the environment and you won't be able to recharge the system correctly without the right tools. If you're leaking a good amount of the green stuff you may want to get it fixed before any damage takes place. Anything leaking out is really oil and that's needed for the compressor.
Thread Starter
Senior Member
Joined: May 2010
Posts: 293
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From: Collierville, TN
E55
Since I'm not using the AC for a few months, I assume I can let this sit idle until it gets warmer or is this something that I need to get fixed now to not damage anything?
Thanks,
Todd
Thanks,
Todd
Thread Starter
Senior Member
Joined: May 2010
Posts: 293
Likes: 0
From: Collierville, TN
E55
Thanks for the details guys. I've tightened up all the connections and cleaned the area. I'll watch it for a few weeks to see if it is stil leaking. If so, I'll go ahead and get it fixed before I forget about it until the 100 degree Memphis summers...
Thanks,
Todd
Thanks,
Todd
2004, ac, air, aircondtioning, auto, conditioner, conditioning, dehydrator, due, faulty, function, jetta, purpose, removing, unit
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