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  1. #46
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    Quote Originally Posted by Bumblebeeman View Post
    Yes it was working fine before the water pump change. I pulled up the water pump base to change the o-ring and gasket underneath, so that's additional opportunity to do something wrong. First one I've done, but I am mechanically inclined. Bought the boat July 2018 and had no idea of the water pump age then so I figured I had better change it. So yes it must be something I did but I can't see what.

    Looking at pictures of the water pump base and housing with impeller in it (enclosed), I'm trying to imagine exactly how the pump transmits water. Obviously the vanes and voids sweeping past from where the water comes to where it goes pumps water. But I don't see exactly how. Does anyone know?
    Attachment 449024Attachment 449025
    Driveshaft is offset in pump housing, making water travel from an area of greater capacity to an area of lesser capacity within the impeller cup. Water is pressurised from this action and travels into the slit you see at about the 6:00 position in your picture.
    See how the impeller vanes are extended further on the left side of your impeller compared to the right side? Extended side = greater volume, Less extended side= lesser volume, and higher pressure. Water wants to escape to area of lower pressure, which is into slit and up pump housing and finally into water tube.

  2. #47
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    Maybe you got a chitty impeller?
    Keyed drive ring spinning inside rubber base circle?
    I always lube impeller cup before installing impeller so these things get a good start on life.

  3. #48
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    Yea I always out a little dish soap etc on it slides on easier

    Did you try turning the driveshaft by hand? It's not easy to turn right?
    If it's posted didn't see.

    Also Just one little leak in a gasket, housing etc will do it, will work water submerged but not on the muffs ..
    Had one that the housing had a tiny crack on top and would not work on muffs..
    Last edited by mrichartz; 09-18-2019 at 11:05 AM.
    LETS GO BRANDON.... LETS GO BRANDON

    Sometimes I talk to myself...then we both just laugh and laugh

    '84 Checkmate Convincor

  4. #49
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    I took the boat into the shop and the problem was I failed to reinstall the 2 gaskets and stainless steel plate just under the impeller. I had initially installed them correctly but then remembered I wanted to lift the water pump housing base to change the gasket and o-ring underneath. When I reinstalled everything I forgot the 2 gaskets and plate. When I was assuring everyone here I had installed the gaskets and plate I was remembering installing them the first time before I took them out to lift the pump base.

    I can't believe I could have made such a basic mistake. Sort of like looking at an incredibly important letter you are going to mail ensuring the address is correct and failing to notice there is no stamp.

    Thanks to everyone for their help. Took the boat to a lake and it runs great.

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  6. #50
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    Great ! I knew it had to be something simple. Mike
    Cheaters never Win !!!

  7. #51
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    Pee hole is plugged.
    Azure AZ259, 8.1

  8. #52
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    Thanks for update.. hate when people figure it out and don't update..
    Had to be something simple or this case missing.
    But glad it's fixed and running good!!
    At least it was a Good lesson for next time..
    LETS GO BRANDON.... LETS GO BRANDON

    Sometimes I talk to myself...then we both just laugh and laugh

    '84 Checkmate Convincor

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  10. #53
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    Lesson learned. Put it n the books. Sucks u had to take it in.

  11. #54
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    Oops! As posted above, thanks for not leaving everybody hanging.

  12. #55
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