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  #1  
Old 06-19-2001, 08:20 AM
LarryBible
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I used flourescent dye on my daughters '81 300D AC system to find a leak. The leak is at the "manifold" that connects both lines into the back of the compressor. I have had one of these apart before, but it's been about ten years ago. Are there O-rings in there or what? Is this a common area to leak?

Putting in O-rings, or whatever it takes to seal it is no big deal, but given the R12 situation, I want to have as much information as possible to ensure that I fix the leak before putting the big buck "gaseous gold" back in there. I want the best chance possible of having the leak fixed before charging.

Thanks for your comments and experience regarding this,
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  #2  
Old 06-19-2001, 09:10 AM
engatwork's Avatar
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Join Date: May 2000
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Larry,
There are "O" rings in there. When I recently replaced the comp on my 300D the compressor came with the new rings.
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  #3  
Old 06-19-2001, 09:12 AM
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For years all that was necessary was a pair of new o-rings. In the last five or so years the replacement R4 has used a seal with a steel washer and rubber bonded to it. Since this washer arangement came out I have seen 2-3 manifolds that have been overtightened to the point where they are no longer staight across.

There are now at least three different seals for R4 compressors: o-ring, thin metal washer/rubber, and thick metal washer/rubber.

I have not decided when the two different washer seals are used, but the compressor seal area is different for the o-rings.
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Continental Imports
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  #4  
Old 06-19-2001, 09:20 AM
LarryBible
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Steve,

Thanks for the reply. If this is indeed a replacement compressor with the steel/rubber arrangement, can I purchase these seals somewhere, or is this part of the replacement compressor?

Thanks again,
Larry
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  #5  
Old 06-19-2001, 09:48 AM
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Join Date: Mar 2000
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Yes, the seals are available separately. BUT, you must get the right ones and what is in there might not be right. I would assume them to be right if they have been there for years working. In other words; if you have owned the car for a long period and they were working, I would assume what is in there is right.

The ACDelco number we stock is 15-2723 for the thin washer (my Delco book says it is 1.2mm thick. We also stock a 3mm one that is 15-2721).
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