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  1. #1

    Join Date
    Feb 2008
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    Auckland, NZ
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    Ultra 150 pump removal

    I am having problems removing the pump on my Ultra 150.
    It has had a bit of use in salt water and there is some corrosion around where the bolts come out of the pump housing, but even with a gear puller on it I can't budge it. Is there a trick to this?


  2. #2
    axgrider73's Avatar
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    Feb 2007
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    Southeast Ohio
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    Do you have the manual?

  3. #3
    Whats that whistling noise? jtskier11's Avatar
    Join Date
    Sep 2007
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    Right side of Kansas
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    Get the rideplate off first... Find a prybar and have fun. Its a chore to get the pump off even in fresh water use. Just be easy and shift back and forth as you pry. Pry a bit on one side, then the other. Make sure you lube up the pump seal a bit before you reinstall it.

  4. #4

    Join Date
    Feb 2008
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    Auckland, NZ
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    Yes I have the manual thanks, I think the person who wrote it had a sense of humour when they said "remove these 4 nuts then SLIDE the pump off"!!

  5. #5
    btldigger's Avatar
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    Feb 2007
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    lebanon tn.
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    Yep they forget to mention the part about grabbing the pump and jerking on it wile looking like you are doing something unatural to your ski. A lite film of grease on the seal helps it come off easier next time.

  6. #6

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    Feb 2008
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    Auckland, NZ
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    Well I finally got it off, all fixed up and back together now - inlcuding a layer of grease on the housing seal, thanks guys!

    I removed one of the shims and have a clearance of approximately 8 - 10 thou on the impeller.... and after reading a few posts here I have a question - is there any advantage in running less than 8 thou clearance?

  7. #7
    btldigger's Avatar
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    Generaly the tighter clearance will give you less cavitation out of the hole and a little more top speed. 8 thou is ok pulling another shim would probably have it hitting. When pulling shims you want to take one out then reinstall the wear ring and tighten it up, then check clearance.

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