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Anything to caulk a leak between compressor and manifold?

philoprof on Thu May 15, 2014 12:23 PM User is offline

Year: 1981
Make: Mercedes
Model: 380sl
Engine Size: 380
Refrigerant Type: 134
Pressure Low: 30
Country of Origin: United States

I just replaced my compressor for the second time, and everything seems to be working fine. However, after running the system for about an hour, I noticed some dye between the the manifold connector and the compressor. I tried tightening the bolt that holds the manifold on as much as I could, and that reduced the leak considerably.

I would unbolt the manifold and change the O- rings if I could. But the problem is that there isn't enough room between the connector and the bracket that secures the compressor to the engine to pull the connector back enough to get it off -- especially since one of the hoses has a little nipple that goes into the compressor.

My question is: Is there anything I can use to caulk the connection between the compressor and the manifold connector?

Thanks very much for any advice anybody can give me on this, as I'd hate to have to remove the compressor again just to change the O-rings.

Dougflas on Thu May 15, 2014 2:20 PM User is offline

no, do it correctly and install new seals/o rings....the proper ones

philoprof on Thu May 15, 2014 9:04 PM User is offline

Thanks for the advice Doug. I was afraid you were going to say that.

But let me ask you a follow-up: if I was willing to sacrifice the manifold the next time I had to replace the compressor, could I use JB Weld to seal the leak? I should mention that I don't seem to be losing freon, and the pressure in the system is as high as it was when I charged it. Is it possible for a little bit of oil to seep out of the manifold seam without losing freon?

Edited: Thu May 15, 2014 at 9:34 PM by philoprof

Dougflas on Thu May 15, 2014 10:33 PM User is offline

just put some nylog on the seals and gaskets.

WyrTwister on Fri May 16, 2014 1:25 PM User is offlineView users profile

My guess is if you are loosing oil , you are also loosing gas ?

I agree , replace the o-rings / seals & use Nylog .

God bless

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