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    Refill the bubble reservoir: periscopic MS28011-1-5 sextant
    From: Paul Loubris
    Date: 2022 Jun 26, 17:09 -0700

    I was a B52 navigator and have several MS28011- series 1-3 sextants.  All need bubble fluids replaced.  

    I have the USAF manual on how to do so but I'd like some personal advice as I worry that I'll mess it up.  

    I have the bubble chamber removed but am afraid to go further.  Any advice will be graetly appreciated.

    Paul Loubris USAF Nav. ret.

       
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