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  1. #1

    Smile Polaris pump alignment

    Any hints or tricks to getting the engine pump alignment as my bearings between the engine output shaft and the hull are running hot while running in my driveway . Haven't had in the water since the engine rebuild .


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    How long are you running it out of the water?

    MAX run time is two minutes out of the water (one minute is better), to prevent over heating the sealing lips on the seals, in both through-hull and impeller bearings. Through hull bearing must be greased fully before running out of the water.

    Then let it cool down before running it again.

    If you run it too long without in-water cooling, the seal lips overheat and start to fail.

  3. #3

    Polaris alignment

    Thanks for the tip you probably just saved me some cash ,I hadn't let it run that long -YET. If they are water cooled are they designed to allow some water to pass through into the hull ?

  4. #4
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by jmw73 View Post
    Thanks for the tip you probably just saved me some cash,
    I hadn't let it run that long -YET.

    If they are water cooled are they designed to allow some water to pass through into the hull ?
    No water leakage needed, or wanted.

    The pump tunnel water water cools the outer seal directly, and cools the drive shaft itself, which cools the rest of the through-hull bearing. It does get 'warm' to the touch, but not 'hot'.

    The bearing inside there is regular steel, so it doesn't want to be wet, ever. Between the water-proof grease and the seal lips, it should stay un-wet, and lasts for years. Eventually you may need to replace the bearing+seals, or rebuild it.

    I would say most of the water that does get inside these things gets in around the seat seal, or the front storage bucket seal.

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