Restoration of 1964 3hp Johnson JH 19A

Home › Forum › Ask A Member › Restoration of 1964 3hp Johnson JH 19A

Viewing 6 posts - 1 through 6 (of 6 total)
  • Author
    Posts
  • November 7, 2021 at 5:24 am #249273
    Monte NZ
    Participant

      International Member

      Hi All
      I’m currently repairing the fuel tap for the above motor and was wondering if someone could please tell me the length of the shaft from the packing nut ( when the tap is shut) to where tee is mounted out side the cowling.
      As you can see from the photos I have provided, the shaft was broken off by the previous owner.
      I have made the new extension on my lathe, bored the original part and soldered them together, leaving extra length that I can cut back once I know the length.

      https://photos.app.goo.gl/SyHEjLuonciK6b2ZA

      Thanks again for any help.
      Monte NZ

      November 7, 2021 at 7:41 am #249275
      crosbyman
      Participant

        Canada Member - 2 Years

        when closed it probably should be as short as possible to prevent snags and breaks

        estimate with this picture

        Joining AOMCI has priviledges 🙂

        • This reply was modified 3 years, 1 month ago by crosbyman.
        November 7, 2021 at 8:27 am #249279
        The Boat House
        Participant

          .

          November 7, 2021 at 11:10 am #249290
          Mumbles
          Participant

            I don’t have any measurements handy but when I’ve played with these valves, I finish them so the tap handle just clears the side cover and is in line with the opening when closed. This way the tap doesn’t have to be opened when removing the cover.

            At first glance, I thought you had cut double threads but then realised it was the original part in your photo. When making a shutoff tap once, I had to cut single threads as I had no way to cut doubles.

            IMGP2201

            IMGP2202

            Lightwin-3

            DSC00619

            November 8, 2021 at 9:13 am #249343
            The Boat House
            Participant



              Alignment isn’t a critical as the Evinrude’s
              This may give you some idea as the original length.
              Tubs

              November 9, 2021 at 3:21 am #249395
              Monte NZ
              Participant

                International Member

                Thanks very much Crosbyman,Tubs and Mumbles for your replies and the photos are a big help……much appreciated!
                As the old saying goes…….a good picture is worth a thousand words!
                Good point crosbyman, in not having the shaft any longer than necessary.
                Very neat machining Mumbles…….yes, fortunately the the double thread on mine wasn’t damaged.
                Having the tap on the Evinrude positioned as shown makes sense, whereas the Johnson isn’t so important, although I will mount it as per the Evinrude as it looks tidyier.

                The next challenge will be to try and replicate the tap handle. It would appear that the original was made from a piece of brass rod which looks to have been put into a press to achieve the shape. Interesting to see that the tap handle had been riveted (roven over) to the shaft.
                In case you are wondering, I have attached a photo of the new shaft machined, prior to fixing it to the valve head and prior to that being bored and soldered.

                https://photos.app.goo.gl/xj4CBWeh72fMS4yt8

                Thanks once again for all your help.
                Monte NZ

              • Author
                Posts
              Viewing 6 posts - 1 through 6 (of 6 total)
              • You must be logged in to reply to this topic.