Wr3 pump
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Thread: Wr3 pump

  1. #1
    I dream skis
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    Wr3 pump

    Hi all, I'm trying to swap impeller on my wr3, I've got it this far apart, if I hold the shaft in a vice, and put a wrench on the impeller will it come apart or will the driveshaft unscrew from the impeller and the impeller stays with the housing? If so how do I get it,off? The other end is threaded....so can't really grab it..
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  2. #2
    PWCToday Newbie augustaf's Avatar
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    Re: Wr3 pump

    Don't even try to pinch the shaft in a vise! You need a spline tool like this:http://www.ebay.com/itm/Yamaha-20mm-...GDqTfg&vxp=mtr . The impeller has left hand threads, it's usually installed with about 50 ft/lbs torque, however due to corrosion it may be difficult to remove.

  3. #3
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    Re: Wr3 pump

    Where does the spline tool fit? There are threads under the cone....

  4. #4
    Frequent Poster Firebird!'s Avatar
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    Re: Wr3 pump

    Quote Originally Posted by Jayinnh View Post
    Where does the spline tool fit? There are threads under the cone....


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  5. #5
    PWCToday Newbie augustaf's Avatar
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    Re: Wr3 pump

    P1030041.JPG

    You'll need a large/strong vise to hold the spline tool.

  6. #6
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    Re: Wr3 pump

    So does the short shaft press out of the pump rear towards the front?

  7. #7
    Frequent Poster Firebird!'s Avatar
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    Re: Wr3 pump

    Quote Originally Posted by Jayinnh View Post
    So does the short shaft press out of the pump rear towards the front?
    Yes, but that is after impeller removal. You may not need that unless you plan on changing bearings too.

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  8. #8
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    Re: Wr3 pump

    So if I take the long driveshaft out of the impeller the impeller will come off?

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