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  1. #1
    mittens's Avatar
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    Leaking intermediate housing...questions.

    Did the transom job, everything is dry, launched boat...15 min later 2-3 inches of water. Transom, drain plugs, ride plate mounts, tie down hooks. All dry.. but I have water flowing in from the intermediate housing. Can see it hitting the water basicly under the firewall/ecu. And can hear the drips/flow. Vs it filling below the water level and just rising so has to be coming from mid level inside ski. And this is the only place to get water from. I also had both tow valves shut. So no water was getting to motor or lines... was doing just a leak test in hull.

    so how hard is it to replace? Looks like a paint in the ass...

    and can you buy the whole bearing seal all together and just slap it in there?

  2. #2
    mittens's Avatar
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    After more reading could this beenfrom lack of grease?

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    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by mittens View Post
    After more reading could this been from lack of grease?
    My understanding, the grease fitting on the intermediate housing is there to allow added grease to lubricate the shaft seal, not the shaft bearing.

    Lack of grease would allow the seal lip(s) to slowly wear. Once worn, the seal would need replacing. Adding grease is not going to ‘fix’ a worn seal.

    On the flip side, forcing too much grease into the housing can displace the seal, forcing it out of position and possibly allowing a water leak


  4. #4

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    You can grease it a bit and also start it to rotate shaft around seal. Which side of bulkhead to you see water dripping? Be sure to check tightness of clamp on hose on back side, the one the impeller shaft goes thru. Water could spray from that hose and look like it was coming from the bearing itself. There is an O-ring inside the intermediate housing that seals the impeller shaft to the housing, maybe you tore it putting the pump back in. You did grease the pump splines good?

  5. #5
    mittens's Avatar
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    I was SUPER careful sliding shaft out and back in.

    i did great the splines. And it all went to gether smooth as butter.

    i have not added grease to that fitting before.. and it leaks with ski just floating the shaft hose was dry 100% on both the front and backcconnection.

    Drips seems to be coming on thr front side of the Wall the ECU is mounted on.

  6. #6
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    When you replace that, drill out inserts on midwall and bolt that thing in......they tend to pull those inserts out as well

  7. #7
    Make sure your siphon bilge hose is connected or it will back flow

  8. #8
    mittens's Avatar
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    So how much of a pain is it to replace that. Can you buy the whole part or just have to rebuild it all bearings and seals?

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    mittens's Avatar
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    Quote Originally Posted by ctct2118 View Post
    Make sure your siphon bilge hose is connected or it will back flow

    Hmm that’s a super good point that hose is right there too... but the check valve should stop that .. granted they go bad. But also the check is higher then the water line. So it should not flow up hill? Then again the check valve (highest point of syphin) is only at the top of the mid wall... and that’s really only a few inches above the water line. Hmm

  10. #10
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    Quote Originally Posted by JoeyDFZS View Post
    When you replace that, drill out inserts on midwall and bolt that thing in......they tend to pull those inserts out as well
    This is good advice. If these inserts have pulled out or the bolts that hold the midshaft housing to the midwall are loose, that could definitely cause a leak. If I remember correctly, there is just kind of an o-ring type seal on the back of the midshaft housing that seals it to the midwall and keeps water from coming in. Pulling the midshaft housing is a pain in the ass. You'll need to move the motor forward a few inches to get it out.

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