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Thread: 912 oil tank line fittings

  1. #1

    Join Date
    Apr 2013
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    Idaho Falls, ID
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    95

    Default 912 oil tank line fittings

    has anyone had to deal with changing out the fitting on the oil tank to a AN fitting? I know that the thread pitch is 18x1.5mm as assembled, problem is that the 90 degree fitting sits to high and my cowling doesn't fit. So I need a low profile fitting. Cant find a metric fitting so I need to change to a AN fitting. Any suggestions

  2. #2

    Join Date
    Dec 2009
    Location
    Netherlands
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    197

    Default Re: 912 oil tank line fittings

    I had the same problem, made a hole in the top cowling for it.
    Closed the hole by laying up some epoxy onto a glassmat into one of my wife's breakfast-bowls: voila!
    Once painted you'll never know it wasn't there.
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  3. #3
    tommg13780's Avatar
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    Nov 2008
    Location
    Guilford, NY
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    156

    Default Re: 912 oil tank line fittings

    Doug,
    I had the same problem and dropped the tank with a welder. He reworked the filler neck and one hose attach fitting to get the necessary clearance. If I had to do it again it seems like the bump in the cowl would be a better and more DIY solution. Mr Bill had his done at Dawley Aviation (I think) and reduced the height of the oil tank by cutting 1/2" or so from the tank then re-welding a seam near the bottom. Maybe Mr Bill would offer a photo?????????

  4. #4
    Senior Member
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    Jul 2011
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    milwaukee wi
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    490

    Default Re: 912 oil tank line fittings

    This is how my tank turned out.
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  5. #5
    Senior Member GWright6970's Avatar
    Join Date
    Jan 2011
    Location
    Vacaville, CA
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    359

    Default Re: 912 oil tank line fittings

    I went with Bill's suggestion and went to Dawley Aviation also... Love their work, and fast turn around time! Very reasonable cost.

    This should work for you also. We have the smooth cowl on the Model IV's so we have even less room to deal with; sticking the oil tank into a small space in between cross members on the firewall bulkhead. .
    Attached Images Attached Images
    Grover Wright
    Flying a KF IV-1200
    ROTAX 912UL

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