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  1. #1
    wowchad's Avatar
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    Fix for cracked drive shaft seal - silicone - flex seal lol

    Bought our first ski a couple months ago & quickly realized the pump was shot. Replaced shaft, bearings, impeller, seals but limped along with the housing.
    Yesterday we launched her for maiden voyage take 2 and it leaked so bad I thought we forgot drain plugs...nope drive shaft seal is shot too
    The seal around the shaft is actually good, but the outer surrounding area is toast. What are the chances it can be run temporary with some RTV silicone sealant smeared on it?
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  2. #2
    steve45's Avatar
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    Nope, it won't work.

    You might look at the aftermarket driveshaft holders from Rhaas.

  3. #3
    This is how I run a jetski shop in the desert nmpeter's Avatar
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    you could always get a really big bilge pump

    in all serious bit the bullet and replace the seal

  4. #4
    wowchad's Avatar
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    Well I had already made up my mind to try before seeing your replies guys. I kept it on the trailer & surprisingly the RTV slowed it down to a trickle, but when I tried to go back & 'resmear' the 2 little spots I missed all the RTV pretty much peeled right off
    It's our first ski, bought it for my daughter and quickly realizing I got ripped off. It doesn't happen often, but not knowing what to look for...yeahhhh this sucks.
    So what's entailed replacing the thing? I heard pulling the engine which I'd sure like to avoid right now.
    I will go check out Rhaas to see what they offer, thanks for that tip.
    Ugggg this is sure frustrating, first the whole pump & now this��
    At least it's still running good

  5. #5
    This is how I run a jetski shop in the desert nmpeter's Avatar
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    Quote Originally Posted by wowchad View Post
    Well I had already made up my mind to try before seeing your replies guys. I kept it on the trailer & surprisingly the RTV slowed it down to a trickle, but when I tried to go back & 'resmear' the 2 little spots I missed all the RTV pretty much peeled right off
    It's our first ski, bought it for my daughter and quickly realizing I got ripped off. It doesn't happen often, but not knowing what to look for...yeahhhh this sucks.
    So what's entailed replacing the thing? I heard pulling the engine which I'd sure like to avoid right now.
    I will go check out Rhaas to see what they offer, thanks for that tip.
    Ugggg this is sure frustrating, first the whole pump & now this��
    At least it's still running good
    Youíll find a few threads on the forum about replacing it

    The engine has to be lifted out of the way you do not have to remove it from the hull completely

    However you can take that opportunity to do some general clean ups and inspections if your inclined to

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  7. #6
    steve45's Avatar
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    What model of 'Ski is it?

  8. #7
    Spooling's Avatar
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    Quote Originally Posted by wowchad View Post
    realizing I got ripped off. It doesn't happen often, but not knowing what to look for... At least it's still running good ....
    -----------------------------------
    If your second hand purchase is "still running good" - I am not so certain I would jump to that conclusion. Don't be so down on yourself about your second hand purchase. Heck, pump rebuilds, and even driveshaft seals are items that wear out and if I bought a used Jet-Ski that I found these 2 items needed replacing I most certainly would not immediately make that assumption. Curious what model/year Jet-Ski you bought, condition, hours,...

    If you wanted reliability including warranty and all - there's always:

    https://www.kawasaki.com/en-us/water...LIST-_-VEHICLE
    -----------------------------------

    Quote Originally Posted by wowchad View Post
    I will go check out Rhaas to see what they offer
    -----------------------------------
    There are other suppliers out there for the item you are needing to replace. Even the Original Manufacturer's replacement seal/housing part is indeed a very good item to install. Heck, how many years/hours are on your existing drive shaft seal - assuming it is OEM?

    https://parts.promarineusa.com/produ.../1/1/1328030-1



    Good Luck !!!
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  9. #8
    wowchad's Avatar
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    Thanks guys, honestly appreciated����
    Manual is at the shop so I haven't looked at it yet, but browsing back, I couldn't find much on it, but found this from nmpeter: Once you get the bearing carrier in place on the shaft, don't apply sealant and bolt it up. The engine has to go back in. The slide the engine back to engage the shaft coupler, bolt the engine mounts into place, then crank the engine once or twice to align the shaft coupler and pump..then apply a bead of sealant around the perimeter of the bearing carrier, bolt the bearing carrier/seal in place, (lightly) spin the engine once more and then tighten the carrier bolts to snug in a criss cross pattern.

    The manual doesn't outline these steps. Don't get this right and the bearing will fail quickly, and when it does the ski will sink.

  10. #9
    wowchad's Avatar
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    Oh & it's a 2002 Ultra 130 with 80'ish hours on it.
    Looked, well still looks really clean for such an old ski, but apparently zero drive maintenance. Guy probably got a quote for all the work & decided to sell it off. I just wish I had known or wouldn't have paid so much for it, but that's why he didn't disclose it I'm sure.
    Anyways here's a perfect picture & also a "my reality" picture hahaha
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    Last edited by wowchad; 08-15-2021 at 12:29 PM. Reason: Add pics

  11. #10
    steve45's Avatar
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    Several things you MUST do:

    Remove the display and seal the rubber plug on the back with 3M 5200 Fast Cure. Otherwise, when you flip the 'Ski, you'll get water in the display and ruin it.

    Upgrade the oil lines with 1/8" ID polyurethane hose and secure them with Oetiker clamps or .025" stainless steel safety wire. Prime the lines with an infant oral syringe prior to installation.

    You really need to replace the bearings on the oil pump drive coupling. When you have that apart, you'll likely find the front cover of the engine clogged with debris, preventing proper cooling of the ECM. Be sure to flush it out to get proper cooling.

    Sorry to give you a list of projects, but the 'Ski is nearly 20 years old. Taking care of these items now will save you a lot of headaches in the future.

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