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912uls Oil pressure vale change

in General Tech Discussion 8 years ago

  • Re: 912uls Oil pressure vale change

    by » 8 years ago

    Hi Roger,

    Was there an engine serial number break point for the change to the mushroom type?
    For example, something like 6770500.
      
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  • Re: 912uls Oil pressure vale change

    by » 8 years ago

    Hi Ian,

    This is one thing I didn't understand about Rotax thought process. That thought it was important enough to come out with the mushroom style oil pressure regulator, but they still install the ball bearing at the factory. It calms down pressure fluctuations and usually raises the pressure around 5 psi. For people that had fluctuating oil pressure and or low oil pressure the mushroom and associated parts did help. Why not just install it at the factory?


    To answer your question directly, unless you replaced the ball bearing after it came from the factory it's still there.

    If you have a newer engine and everything on the pressure side is good then no need to rush out and install the mushroom.

    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell

      
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  • Re: 912uls Oil pressure vale change

    by » 8 years ago

    Roger: When you replace the spring and ball should you use Loctite 243 when installing the oil plug?
      
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  • Re: 912uls Oil pressure vale change

    by » 8 years ago

    I never have and they haven't leaked. I do safety wire all of them.

    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell

      
    Report

  • Re: 912uls Oil pressure vale change

    by » 8 years ago

    The rotax heavy maintenance manual says oil only on the diagram on page 436
    Doug
      
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