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Thread: check nuts

  1. #1
    Senior Member Flybyjim's Avatar
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    Default check nuts

    When tightening the check nuts on the push-pull tubes do you use any lock tight for finial assembly

  2. #2
    Senior Member jiott's Avatar
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    Default Re: check nuts

    I did not. I dont believe any Loctite was called for in the build manual.

    In order for the push-pull tubes to get out of adjustment, BOTH rod end check nuts would need to come loose. Not very likely.
    Jim Ott
    Portland, OR
    Kitfox SS7 flying
    Rotax 912ULS

  3. #3
    Senior Member PapuaPilot's Avatar
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    Default Re: check nuts

    No, you don't need it. Just tighten or torque them the nuts. I put a colored "torque seal", which allows you to see if the nut has loosened.
    Phil Nelson
    A&P-IA, Maintenance Instructor
    KF 5 Outback, Cont. IO-240
    Flying since 2016

  4. #4
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    Default Re: check nuts

    If both lock nuts came loose, there's no change in adjustment because each rod has right hand threads.

  5. #5
    Senior Member jiott's Avatar
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    Default Re: check nuts

    Right you are Floog. But, if both came loose one end could completely unscrew itself. Its interesting, as you say, there would be no change in adjustment at all, until sudden failure when one end lets go.
    Jim Ott
    Portland, OR
    Kitfox SS7 flying
    Rotax 912ULS

  6. #6
    Senior Member
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    Default Re: check nuts

    I hate it when that happens

    If each Heim is screwed in more than half way then it couldn't happen.
    It can't happen with the rudder.

  7. #7
    Senior Member jiott's Avatar
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    Default Re: check nuts

    That's cool! Just screw them in more than halfway (assuming you can and still get proper adjustment) and its failsafe, checknuts or not. Strength of threaded joint might be questionable on the end that is almost unscrewed.
    Jim Ott
    Portland, OR
    Kitfox SS7 flying
    Rotax 912ULS

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