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  1. #1

    Hatteras 70 cockpit shaft

    Hello to everyone.
    I’m from Italy. I bought a wonderfull Hatteras 70 cockpit two years ago.
    I would like to change the bearings shaft and the two headsets.
    My problem is to divide the shaft from the gear. The shaft seems glued.
    Any suggestion please?
    federico

  2. #2

    Re: Hatteras 70 cockpit shaft

    I'm guessing you are asking about the propeller shaft installed in the gear coupling;
    There is a nut on the shaft end like a prop nut, inside of the coupling facing the gear.
    Usually a Ny/Lock nut with still a cotter pin.

    Then you have to press the shaft out of the coupler.
    There is two ways to do this; The right way and the wrong way.
    I do recommend you hire a proper tech to pop this.

  3. #3

    Re: Hatteras 70 cockpit shaft

    Are you asking how to remove the shaft coupling or separate the shaft coupling from the reduction gear? Is there a 2 piece shaft? If so you may not have to pull the shaft.
    Last edited by dsharp; 04-01-2022 at 06:33 PM.

  4. #4

    Re: Hatteras 70 cockpit shaft

    I would like to separate the shaft coupling from the reduction gear.

  5. #5

    Re: Hatteras 70 cockpit shaft

    Here you have a picture
    Attached Images

  6. #6

    Re: Hatteras 70 cockpit shaft

    Looks like the two couplings have rusted together. You may be able to drive a stiff blade putty knife between the couplings. You may have to loosen the stuffing box to let the shaft move back. If you can get on the shaft coupling with a pipe wrench sometimes just turning the shaft will cause it to break the couplings loose.

  7. #7

    Re: Hatteras 70 cockpit shaft

    What ever tool you use to get the coupler off of the flange, ensure the gouges are cleaned up properly with a file.

    With out the rite tools and experience, you may end up doing more damage than good.
    I do advise you find a proper tech.

  8. #8

    Re: Hatteras 70 cockpit shaft

    Quote Originally Posted by Captain Ralph View Post
    What ever tool you use to get the coupler off of the flange, ensure the gouges are cleaned up properly with a file.

    With out the rite tools and experience, you may end up doing more damage than good.
    I do advise you find a proper tech.
    what Kind of tool do you suggest?

  9. #9

    Re: Hatteras 70 cockpit shaft

    What Is this hole that I see in the picture? Is there something inside?
    what is it meaning?

  10. #10

    Re: Hatteras 70 cockpit shaft

    It may be a pin that goes through the shaft. It won’t hold the two couplings together. Take a 1” stiff putty knife and sharpen a knife edge on it with a whetstone. Go around the coupling in 4 or 5 places and drive it between the couplings. Don’t try to drive anything like a screwdriver in. All you’ll do is gouge up the coupling. You could always start the engine and bump it in gear as a last resort.

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