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Oil Thermostat on 912 ULS

in 912 / 914 Technical Questions 7 years ago

  • Re: Oil Thermostat on 912 ULS

    by » 7 years ago

    Hi Roger,

    I am close to finish the whole re-installation of my motor and then purge the oil circuit.
    As I have installed a thermostat in the oil circuit:



    On the training video, ROTAX says to be carefull when installing a thermostat, but without saying exactly to what.
    -According your experience, what should I do or be particullary attention?
    Thanks by advance.

    Eric
    P1190862.JPG (You do not have access to download this file.)
      
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  • Re: Oil Thermostat on 912 ULS

    by » 7 years ago

    Before you do your purge you can always prefill the oil cooler and the two oil hoses.

    p.s.
    Your oil hoses should be in fire sleeve.

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

      
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  • Re: Oil Thermostat on 912 ULS

    by » 7 years ago

    The room around is missing! If I do so, I worring about oil around de pipe connection when I will reconnect the hose on the thermostat; Is it an issue?
    Many thanks Roger.
      
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  • Re: Oil Thermostat on 912 ULS

    by » 7 years ago

    Not an issue. Just wipe off any spilled oil. If there is just some wiped up residue on a pipe or muffler it will burn off. You don't have to fill every tiny space just fill the majority if that helps you any for those tight spaces. When I purge a new engine or one that I have removed all the oil hoses I tend to always want to error on the safe side so I usually purge the engine once. Take a minute or two breather and then do it again. It may not always be needed I'm just paranoid. It can't hurt, but gives me peace of mind. Usually when I do an oil purge I can see 50-55 psi on the instrument gauge.

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

      
    Report

  • Re: Oil Thermostat on 912 ULS

    by » 7 years ago

    -The 50-55 psi you mentioned is during purging (turn the propeller by hand) or after, when you run a test of the engine to reach the 50°C?
    -According your experience, when you inspect for correct purging of hydraulic valve tappets (check the distance between rocker arm and valve contact surface <0.5 mm) is it often you need to go for another 5 min run?
    Thanks
      
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