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Thread: Manual Precedencd

  1. #1
    CarlOrton's Avatar
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    Manual Precedencd

    Iím building an experimental O-200. Iím probably reading it wrong, but what takes precedence - the 2011 overhaul manual or the 2019 M-O manual?

    Specifically in the area of threading the case.

    OH says permatex and string on the 2-4 case half. Nothing on the bearing bosses except for the #7 stud below the rear cam bearing.

    M-O says permatex and thread around all main bearing bolt holes as well PLUS Loctite 515 on the 1-3 case halves opposite the permatex coated areas. HOWEVER the M-O diagram is for ALL 4 cylinder engines without breakouts for each model.

    In the sealants table (3-4) it says use the 515 on all SI models. The SIL 99C-2 has same table, but instead of ďall SI modelsĒ says ďas appropriate.Ē

    Iím leaning to follow the OH since it is specific to the O-200.

    Am I correct? Thank You for sharing your wisdom.

    Carl Orton
    Sonex #1170 / Zenith 750 Cruzer
    http://mykitlog.com/corton

  2. #2
    bigdog's Avatar
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    Aug 2011
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    I used the Permatex plus Loctite 515 on my Cont. IO-550B and my engine guy says he uses it on all his engines, including Lycoming even though they spec something different. BTW I got the Loctite at my local Fastenal store.
    Regards,
    Greg Young
    1950 Navion N5221K
    RV-6 N6GY - waiting for AWC inspection
    1940 Rearwin Cloudster is next
    4 L-2 projects on deck

  3. #3
    CarlOrton's Avatar
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    Well, after I posted the topic and got no response, I called Contintal tech support. They said the M-O manual is newer so supersedes the OH manual. I used the Permatex and 515 with thread.

    Carl Orton
    Sonex #1170 / Zenith 750 Cruzer
    http://mykitlog.com/corton

  4. #4
    planecrazzzy's Avatar
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    Brrrmidji , Minne-SNOW-ta
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    Have you seen any of the utube videos by Savvy Aviation ???
    .
    The guy has a lot of good info....several videos...

    Gotta Fly...
    .

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