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  1. #1
    05RXPX JQuattro's Avatar
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    Bad Carbon Seal???? Couple Other Questions - Any help appreciated

    Hello Everybody Again.... You guys have been great and I love this forum. I have taken apart the back of the ski to try and figure out why it nearly sank on me - Easily 1/3 probably more of the hull full of water in less than 5 minutes. I have a couple of questions that I hope my fellow Greenhulk commmunity might be able to help me with:

    First: When I removed the jet pump there was a small plastic ring hanging on the end of the driveshaft - Is this supposed to be there?
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    Second: I noticed the wear ring had some pretty good grooves in it - Is this normal? Ski has approximately 150 hours on it. I'm gonna replace it but I just wanna know if I should be worried about anything?
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    Third: How can you tell if the carbon seal is bad or not? I inspected it and it has no grooves or any noticeable damage. The hat does have some heat marks on it but nothing major. I did find the C-Clip in the bottom of the hull - Is it possible the carbon seal is good and the clip just came out from revving it on the trailer too much while trying to clear debris from the intake grate / prop area????
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    Fourth: I noticed the tunnel area had some damage to it probably from sticks and other debris being caught in there over the years - Should I be worried that most of the plastic fins have broken off in there???
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    Thank you guys in advance for any help you can provide - I have learned so much from the greenhulk.net community and I continue to learn more everyday.


  2. #2
    Moderator Snoman's Avatar
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    1st-The plastic ring is from the OEM nose cone...Were is that nose cone now???

    2nd-nothing to worry about if your gonna replace it,yours is beat up some,but nothing to make it sink..

    3rd-the carbon itself looks ok,the hat,as you posted has some unwanted markings in ti but still looks ok..Your C-clip,that you found in the bottom of your ski,should be on the drive shaft holding the hat in place...seeing you fond it in the bottom of your ski,and you damn near sank it,it tells me the c-clip came off....

    4th-Those are called sharks teeth,seeing you now have some broken off,grind them all down smooth with the shoe,otherwise you will have cavatation with them left as is...you will not hurt anything by grinding them down....Many many members including myself have had that issue and have had to grind them down...

    Also IMO ,if this were me,with 150 some hours on your ski,i would go ahead and replace the seal assembly since you have it apart(Carbon seal,hat,c-clip and accordian boot) it will save you the hassle and trouble in the near future....One more thing,what concerns me is the C-clip popped off...look at the groove in the driveshaft to see if indeed it is still ok...they are known to wear causing the clip to pop..if the groove is shallow then you may be in need of a replacement driveshaft.....

  3. #3
    Eastside Powersports Slow 91's Avatar
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    is the impeller tight? a loose impeller will lead to a sinking ski

  4. #4
    C-clip on bottom of hull = ski under water

    Respect the c-clip!

  5. #5
    AReiter's Avatar
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    +1 on Sno's advice. Had many of the same issues when I bought my ski a few years back. Getting a new wear ring, grinding those shark teeth down, and a new carbon seal assembly will make it feel like a whole different ski in terms of cavitation..

  6. #6
    05RXPX JQuattro's Avatar
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    Attachment 312529
    Per the Snoman - Thanks for the advice
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  7. #7
    05RXPX JQuattro's Avatar
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    Gonna order all the parts this weekend via greenhulk.net - here is a pic of the driveshaft with the c-clip on it. I think the groove is fine - What do you guys think? Click image for larger version. 

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  8. #8
    05RXPX JQuattro's Avatar
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    Thank all of you for your advice

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