Home Forum Ask A Member Pivot pin 57 Johnson 35 HP

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  • #181659
    bck1
    Participant

      I am in the middle of getting this motor wor

      king. I have got the motor running and now am rebuilding the gearcase. Before I opened it up I noticed that the pivot pin was not completely seated in the skeg. Now that it is apart I have tried to insert the pin and screw it all the way in. No luck it will advance about 1/16th of and inch and no further. I have checked the threads on the pivot pin an run a tap in the skeg. All seems OK there .There is no obvious trauma to either the skeg or the pin {it does not appear to be bent}. A drill bit will travel the depth of the receiving hole in the skeg I am wondering if I should grind a small amount off the pin thinking that it would then seat properly. Any thoughts? Thanks for any input Brian

      #181678
      frankr
      Participant

        US Member

        I find it highly unlikely the pin is too long. Gotta be some other reason it won’t go all the way in. Of course you used the correct tap into the skeg, right?

        #181680
        bck1
        Participant

          I don’t think the pin is too long as it will not go in more than about 1/16th of and inch when marked with a sharpie. The drill bit goes in the entire depth of the hole.The die I used to tap it went in very easily I am at home now away from the unit but I think it was 1/4 by 28 tpi.

          #181686
          phil
          Participant

            US Member - 2 Years

            I’m having trouble understanding: With the gearcase apart, and nothing inside:
            1. the pivot ONLY goes in 1/16th
            or
            2. goes in almost all the way??

            If #2, is the seal/o-ring in good shape?

            http://www.omc-boats.org
            http://www.aerocraft-boats.org

            #181693
            Buccaneer
            Participant

              US Member

              Could the motor have come with the wrong pin?

              Prepare to be boarded!

              #181694
              bck1
              Participant

                So when I insert the pin and start to screw it in it will only go in at urn and a bit. The pin engages the receiving hole but than stops and will not advance more. I am afraid to attempt to turn the screw more in case I strip the threads. So only about 1/16th of an inch is in the receiver. Could a PO used the wrong pivot screw or could there be a misalignment of the two

                #181695
                bck1
                Participant

                  Sorry Buccaneer I just saw your post. Are there different sizes of pins?

                  #181696
                  frankr
                  Participant

                    US Member

                    There are variations of the same pin, all interchangeable as far as I know. The differences are such as gasket vs o-ring—stuff like that.

                    #181700
                    Mumbles
                    Participant

                      Try chasing the threads on the pin itself. 1/4 X 28 I believe. Is the pin straight?

                      #181702
                      bck1
                      Participant

                        SThanks for all the replies . I did run a tap over the threads on the pivot and they are OK. I also threaded a 1/4 I nut with 28tpi and it goes on easily . I don’t think the pin is bent but will check again. I do have a part motor in the rafters that I think is either a 9.9 or 18 hp from about 1960. Would that pin be the same size?

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