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Old 02-22-2013, 04:16 PM
avoisin avoisin is offline
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Location: Oregon
 
Join Date: Feb 2013
Posts: 11
Mein Auto: 2004 X3 2.5i
Update - I ended up using some metal tape to add a bit of width to that pipe. That was enough to get the friction fit to work again. It took some effort to get things back together, but a hammer made things work ok. I did it by wrapping the slide-out part with 2 layers of high temp metal tape, putting the tank back on, then hitting the top of the tank with a rubber mallet (and the bottom, somewhat) until things came together. Best I can tell, the slow drip has stopped.

I could probably have also gotten a new expansion tank and the lower slide-out piece, but this solution wasn't half bad. And now I have extra metal tape!

The o-ring is kind of embedded into the tank, and I figured I'd just leave it alone and try the metal tank. I didn't really see an easy way to wedge it out like you were suggesting. I think the problem came from me just mucking around down there and damaging the o-rings in the first place, since I am pretty new to all this.
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