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  #1  
Old 04-06-2008, 10:31 AM
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Join Date: Jun 2001
Posts: 17
104 Help on Coolant return Housing!

I have a 104 engine and am replacing the the infamous u shaped gasket on the upper cover. I have a coolant return housing that goes through the front cover into the cylinder head. I took off the two long bolts and sprayed the housing overnight and I tried pulling it but it won't budge. What am I doing wrong?
Thanks Tom W

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Old 04-08-2008, 08:16 PM
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Join Date: Aug 2006
Posts: 725
It's probably being held in by corrosion or the o-ring is binding. Work away at it slowly and it should come out. I replaced the housing on mine because it was badly corroded. No corrosion found anywhere else in the engine so I think it is a poor quality casting. Replacement from MB didn't look too great either.
You will need to replace the o-ring, part number 017 997 23 48
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  #3  
Old 04-08-2008, 09:22 PM
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Join Date: Jun 2001
Posts: 17
Thanks Rick

It was frozen solid. I put some pb blaster in and tapped slighty with a leather hammer and it moved a 1mm and took a good half an hour and it came out. It was corroded and will be replaced. Thanks for the tip.
Tom W

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