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Hi, Yesterday I noticed oil leak on the Oil Seal on the back part of the engine (crankshaft). My 912iS engine only has 110 hours. Is this normal ?

Attach photos. Thanks.

 

10092_1_WhatsApp Image 2023-10-02 at 22.15.55.jpeg (You do not have access to download this file.)
  • Re: Crankshaft Oil Seal Leaks

    by » 5 months ago


    If you're talking about the Torx head plug on the back I have seen a few plugs that have come lose and leaked oil. Another mechanic I know has seen a few too. Just a add a drop or two of Loctite 243 (med blue) on the threads.and torque it back down.


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


  • Re: Crankshaft Oil Seal Leaks

    by » 5 months ago


    Thanks. I did not know that this plug can be adjusted. Do you know which size of Torx should I get. (I have to buy one ...) Thanks !!!


  • Re: Crankshaft Oil Seal Leaks

    by » 5 months ago


    I had the same, from new, finally i had to change the seal?


    Karl (Charly) Kistler
    HB-YPL(RV12iS) / HB-YNB (Helicopter CH7)
    karl@kistleronline.ch
    www.kistleronline.ch
    www.chaletferienfurna.ch


  • Re: Crankshaft Oil Seal Leaks

    by » 5 months ago


    Maximo

    The oil leak is most likely originating from the seal, not the bolt at the end of the crankshaft. It's essential to note that Rotax does not provide the torque value for that bolt in any manuals other than the Overhaul manual. If you remove this bolt, it cannot be properly re-torqued without contacting your local distributor. They can supply you with the torque value, as we are prohibited from disclosing this information due to Rotax's stringent rules concerning the release of information from the overhaul manual.

    Considering the likelihood of the issue being related to the seal on the ignition housing, it would be prudent to reach out to your local Rotax distributor or service center/repair station. You can inquire about the possibility of warranty coverage, depending on your engine's age, or request them to replace the seal for you. Please be aware that replacing this seal can be a challenging task, involving the removal of the ignition housing. In many installations, it may even require the engine to be removed from the aircraft, depending on the available workspace behind the engine.

    You can find your local Rotax distributor, service, or repair center by clicking on the following link: https://dealerlocator.flyrotax.com/

     


    Thank you said by: Maximo Lema

  • Re: Crankshaft Oil Seal Leaks

    by » one month ago


    During Flight of 31/12/2023 we had a slightly strange serious breakdown, the rear screw of the engine crankshaft has loosened with a significant oil loss.  I attach photos.  What is the cause??  What procedure must be applied for its correct repair???  Happy new year and thank you very much

    38374_2_Imagen de WhatsApp 2023-12-31 a las 16.30.02_a75fd002.jpg (You do not have access to download this file.)
    38374_2_Imagen de WhatsApp 2023-12-31 a las 16.30.03_9b7bc8e6.jpg (You do not have access to download this file.)

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