505 water pump
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Thread: 505 water pump

  1. #1
    Fellow Frogger!
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    Default 505 water pump

    hello

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    after removing the water pump i discovered all sorts of sealants, gaskets, sediments etc. stuck to surface- how can i clean them? with a fine sanding paper?

    in addition, the center area is eaten by corrosion so there are couple of recessed spots. what's the best way to fill them without taking the head to a specialist? i was thinking of either a gasket maker or this propoxy sausage that fixes iron.


    thx

  2. #2
    1000+ Posts Peter Chisholm's Avatar
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    Unless you're very skilled at sanding I'd scrape all the gunk off with something like a large flat bladed screwdriver, a paint scraper etc. It needs to be something that won't easily gouge and taking out the studs will make it easier. If you sand it you can end up taking off metal as well as the gunk.

    When you say the centre is is eaten by corrosion I presume you mean the welsh plug behind the water pump. It's a bit hard to advise what to do without seeing a photo.

  3. #3
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    not the welsh plug, but the surface of the head at the center of the mating area, in the location marked in the photo.

    505 water pump-joint-moteur.jpg

  4. #4
    1000+ Posts Peter Chisholm's Avatar
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    If there is still plenty of "meat" left - there aren't very deep holes or holes all the way through to the other side, I wouldn't worry.

    Clean up the mating surface properly, get some Hylomar (if they have it in Israel) and reinstall the pump with a VERY LIGHT smear coating of Hylomar on both sides of the gasket.

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