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  1. #1

    Exclamation 2007 Ultra 250 Pump Bearing Problem

    A couple weeks ago I had some noise coming from the pump area in my ski.. My buddy (mechanic) and I took out the pump, to find that the bearings were shot, which caused prop damage and pump housing damage.

    I ordered a new prop, complete new pump, new seals, and new TBM Racing bearings, new pump shaft, (basically a complete new pump assembly). We installed all new items and took the ski out today.

    It ran fine for 2 hours, with great pick up and no noise. While riding after about 2 hours I started to hear a loud noise coming again from the pump. We came back to shore and pulled the pump out to find that the front bearing closest to the prop was shot. Also one side of the pump housing showed scraping marks from the prop, and the prop was worn down slightly on one side.

    Does anyone know what would cause this?? or have any experience with this problem. We were thinking that maybe it could be something to do with a faulty bearing from the factory. Or maybe something to do with the driveline...

    Any suggestions would be great! I want to get back on the water.


  2. #2
    Fat Man, Little Boat Region8Ultra250X's Avatar
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    search the forum for ppump bearing issues.... you will find your answer.... my next guess is gonna be your crank bearing is gonna walk and take out the bottom end of the motor

  3. #3
    Daveski's Avatar
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    Engine alignment

  4. #4
    Take the time to smile sirbreaksalot's Avatar
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    Quote Originally Posted by goldnole View Post
    A couple weeks ago I had some noise coming from the pump area in my ski.. My buddy (mechanic) and I took out the pump, to find that the bearings were shot, which caused prop damage and pump housing damage.

    I ordered a new prop, complete new pump, new seals, and new TBM Racing bearings, new pump shaft, (basically a complete new pump assembly). We installed all new items and took the ski out today.

    It ran fine for 2 hours, with great pick up and no noise. While riding after about 2 hours I started to hear a loud noise coming again from the pump. We came back to shore and pulled the pump out to find that the front bearing closest to the prop was shot. Also one side of the pump housing showed scraping marks from the prop, and the prop was worn down slightly on one side.

    Does anyone know what would cause this?? or have any experience with this problem. We were thinking that maybe it could be something to do with a faulty bearing from the factory. Or maybe something to do with the driveline...

    Any suggestions would be great! I want to get back on the water.

    Need more info

    How long did the previous set last
    how long have u owned it, did u just buy it 2 weeks before ?
    how many hrs on the ski

    possible causes.

    U put the pump together wrong
    engine alignment
    threw hull bearing is stuffed
    engine mount is stuffed
    bent prop shaft ( SHOULD HAVE FELT THE VIBS ANYWAY )
    YOU PUT IT TOGETHER WRONG

    did u check if you had any shaft float between couplers when u finished putting it back together
    have u since checked to see if you have crank float now ?????



    Oh yer !!!!!!!!!

    "USE THE SEARCH LUKE"

    how cool a new Topic

    Waz

  5. #5
    nicjak's Avatar
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    did you seat the front bearing correctly, why the F*&$k didnt you mod it the first time surely you read about it all on here.

  6. #6
    Offshore Aussie's Avatar
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    No not another pump! I can't take it anymore!

  7. #7
    Offshore Aussie's Avatar
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    Ground hog day!

  8. #8
    nicjak's Avatar
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    you did press the bearing in didnt you? and if so by the outer race not the inner? cause if you used a hammer and a drift on the centre race that could be what caused it to fail.
    actually seem to remember suggesting to you to check the pump in your 100hr service thread could have saved your dollars had you done it.
    http://www.greenhulk.net/forums/show...=1#post1549406

  9. #9
    the wotman likes boobs wotman's Avatar
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    busted!

  10. #10
    Offshore Aussie's Avatar
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    Race bearings ? Did you spin them before you installed them? Did you do the double bearing mod, I see you purchased a new shaft, why? If it it wasn't for the double bearing mod? It seems there is missing information, however, you have been given some very sound advice and unfortunately for you not to listen has cost you. Let it be lessons for all. Life goes on my friend.

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