Welcome to the NavList Message Boards.


A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Add Images & Files
    Re: Sextant AN 5851-1
    From: Ken Gebhart
    Date: 2004 Jun 3, 09:55 -0500

    on 6/2/04 11:22 PM, Peter Henry at peterghenry@EARTHLINK.NET wrote:
    > I have a Navy Mark V (AN 5851-1) sextant which I purchased last winter and
    > have been using occasional.  When I purchased the sextant it had not been
    > used for a very long time I removed all of the housing and cleaned it in
    > it's entirety.  The bubble on recite was very large and unadjustable but
    > with the replacement of the o ring at the thimble pressure pump and
    > persistent attempts at using it I was able to get the bubble to adjust from
    > large to small and back.  I would also like to note that since I a have
    > received the instrument I has had a distinct sent which could be the bubble
    > fluid and that the I have stored it with this loose per a note typed on a
    > piece of paper in the box which reads as follows. " Important, Always return
    > bubble control nut to neutral when not using the instrument. (nut should
    > spin freely) Leaving pressure on diaphragm damages bubble unit beyond
    > repair."
    > Recently I took the unit out of it's case for the first time in a month and
    > the bubble is back to it's large size and I am not able to reduce it.  I am
    > wondering of the fluid needs to be refilled. If so what is the fluid and
    > where does one get the fluid and how is refilling it accomplished?  Is the
    > diaphragm damaged? If it is how can I repair or replace it?  I would greatly
    > appreciate any questions and assistance that one might give me.
    > Sincerely,
    > Peter Henry
    Dear Peter,
    Yes, I can tell you everything, but don't have the time to write a 2 page
    letter now. Please phone me at 316-686-9785 (W) or 316-686-4857 (H).
    Ken Gebhart

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.

    Email Settings

    Posting Code:

    Custom Index

    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site