1956 Johnson 30 HP upper crank bearing seal

Home › Forum › Ask A Member › 1956 Johnson 30 HP upper crank bearing seal

Viewing 7 posts - 1 through 7 (of 7 total)
  • Author
    Posts
  • May 19, 2018 at 8:17 pm #9977
    olcah
    Participant

      US Member

      This question is really aimed at Chris_P. I understand the number for this seal is 321467 and have installed one of these in a 1956 Johnson 30 HP RD18. From his website I see another number for that seal – 303804. To muddy the waters further talking to a reputable dealer, they recommend a double lip seal 911019.
      Chris_P can you enlighten me any on these different seals/numbers?
      Thank you.

      May 20, 2018 at 1:01 am #76356
      chris-p
      Participant

        303804 supersedes to 321467. They are essentially the same seal.

        911019 is a new number to me. I cannot comment on it, perhaps someone else can? Is that the superseded number for 321467? I don’t have access to my manuals right now sorry. Ill look when I can unless someone else has the answer.

        If you need a seal, PM me with your shipping address and Ill send one over.

        May 20, 2018 at 1:25 am #76361
        dan-in-tn
        Participant

          US Member

          Usually 900 series numbers of old were stern drive numbers? Some converted & were used for outboards. Lots of double lipped on stern drive applications. Sierra (18-2066) should have the sizes listed in their main catalog. Not all were ethanol resistant? Used in gearcase applications, etc.

          Dan in TN

          May 20, 2018 at 1:26 am #76362
          chris-p
          Participant

            Ok got interested in this so did some digging.

            The 303804/321467/18-2060 Oil Seal Measures 1.000 Shaft/1.375 OD/0.25 width

            The 911019/18-2066 Seal Measures 1.000 Shaft/1.375 OD/0.435 width

            So it has the same OD and ID, just a bit wider, which should not affect anything. I cannot see why that would not work as long as it is ethanol resistant. Good to know.

            May 20, 2018 at 1:36 am #76365
            frankr
            Participant

              US MEMBER PAY BY CHECK

              According to the chart, 321467 and 911019 are same ID and OD but the first is .250 thick and second is .435 thick. That’s all I know.

              EDIT: Too late, Chris beat me to it.

              May 20, 2018 at 12:58 pm #76398
              olcah
              Participant

                US Member

                Thank you everyone. Great info, Very much appreciated.

                May 21, 2018 at 12:09 pm #76470
                olcah
                Participant

                  US Member

                  Chris _P, please see PM.

                • Author
                  Posts
                Viewing 7 posts - 1 through 7 (of 7 total)
                • You must be logged in to reply to this topic.