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  1. #1
    RHeller1's Avatar
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    Drive shaft Seal?

    Is there suppose to be a seal where the driveshaft goes into the hull?

    Last edited by RHeller1; 08-16-2008 at 11:14 AM.


  2. #2
    Moderator OsideBill's Avatar
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    The seal is inside at the intermediate shaft housing. there is a hose inside that goes between the intermediate shaft and the tunnel housing. There are a couple o-rings inside the intermediate shaft where the drive shaft fit's in put plenty of grease on the splines when you install to prevent rust and damage to the intermediate shaft splines.

  3. #3
    RHeller1's Avatar
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    cool...wasnt sure if I pushed in a seal when putting the driveshaft back in... but I must be good then...

  4. #4
    Moderator OsideBill's Avatar
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    Here is the pic from a 07 GPR of the hose, I change mine to a heavier duty Gates hose. I get them from WFO you can buy it at NAPA also.
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  5. #5
    Moderator OsideBill's Avatar
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    Quote Originally Posted by RHeller1 View Post
    cool...wasnt sure if I pushed in a seal when putting the driveshaft back in... but I must be good then...
    Yep you are fine did you grease it? very important to grease the splines, use any HD waterproof grease.

  6. #6
    RHeller1's Avatar
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    yep, used marine grease on it

  7. #7
    I think the "double O ring" set up inside the intermediate shaft is dumb! This is really supposed to seal? Last year, I took out my pump assembly. When I put it back in I too "greased" it heavily with marine grease.

    This year, when I did my complete engine/jet pump rebuild I discovered it did not seal very well. I had severe corrosion inside the intermediate shaft and could clearly see the signs of water infiltration.

    Any one have suggestions on making a better seal?

  8. #8

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    Quote Originally Posted by bbealing View Post
    I think the "double O ring" set up inside the intermediate shaft is dumb! This is really supposed to seal? Last year, I took out my pump assembly. When I put it back in I too "greased" it heavily with marine grease.

    This year, when I did my complete engine/jet pump rebuild I discovered it did not seal very well. I had severe corrosion inside the intermediate shaft and could clearly see the signs of water infiltration.

    Any one have suggestions on making a better seal?
    If you have a used pump shaft, the splines often have worn a sharp little edge on the top of each spline, making an effective seal cutter when you slide the splines past the o-ring seals, the damaged seal then leaks water thru. You should always inspect the splines, and file/dress down any of the sharp wear edges.

  9. #9
    Moderator OsideBill's Avatar
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    Quote Originally Posted by bbealing View Post
    I think the "double O ring" set up inside the intermediate shaft is dumb! This is really supposed to seal? Last year, I took out my pump assembly. When I put it back in I too "greased" it heavily with marine grease.

    This year, when I did my complete engine/jet pump rebuild I discovered it did not seal very well. I had severe corrosion inside the intermediate shaft and could clearly see the signs of water infiltration.

    Any one have suggestions on making a better seal?
    They only protect the inside of the coupler shaft and end of the driveshaft spline nothing else. If you had water at the housing you have a different issue.

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