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4788 upper helm steering seal leak-gctid806664

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    4788 upper helm steering seal leak-gctid806664

    Has anyone replaced the seal kit on the upper helm. The unit is a hynautic H-50

    Not much information on YouTube.

    Thanks Dave

    #2
    Lots of info on here though. Do a search and will give a step by step rebuild with diagrams. I might be able to pull up a old post for you.
    Dan
    Frostbite Falls, Minnesota
    Claudia V. III
    1988 - 3218
    Gas Drives

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      #3
      Just google "4788 steering gear leak BOC smitty477" - you will get a few threads like this one....

      http://www.baylinerownersclub.org/in...ing-fluid-leak

      Here is a direct link to the rebuild and within that link another link to the bleeding instructions....

      http://www.local1259iaff.org/hydraulichelmrebuild.html
      Northport NY

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        #4
        Thanks
        ..........

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          #5
          I rebuilt my upper helm on my 4588 same thing H50 got parts from Amazon about $35 for "O" rings. It came with instructions, still kind of a messy proposition but not complicated. If the helm pump has other issues Teleflex is the parent company of Hynautic.

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            #6
            Rebuilt upper and lower on my 4588. Initial noted red fluid stain all over my new pilot house carpeting! Fortunately it was a special "pet friendly" product and the stains came up with no problem. I figured if the lower is crapped out, might as well do both.

            Used the kits from Amazon as referred to in previous post. Had a local general tech do the job. I have now rebuilt the piston/actuator and the helm seals. No issues as of yet.

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