1951 bigtwin Gear case Bearing

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  • May 3, 2016 at 10:08 pm #4197
    Randy in Tampa
    Participant

      Im looking for a parts diagram for the 51 bigtwin gearcase and what common size bearing the drive shaft takes ? thanks Randy in Tampa 😎 ,

      May 4, 2016 at 1:27 am #35917
      david-bartlett
      Participant

        Randy,

        My 1954 RD uses OMC # 375829. Timken #’s 09081 and 09195. Not sure if 1951 would be the same or not.

        David

        May 4, 2016 at 2:08 am #35923
        frankr
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          US Member - 1 Year (includes $3 online payment fee)

          I believe there are selective shims involved with that bearing. I would have to search the manual for the details.

          May 4, 2016 at 4:47 pm #35975
          Randy in Tampa
          Participant

            Found an old parts manual in stuff..thanks all 😎

            quote FrankR:

            I believe there are selective shims involved with that bearing. I would have to search the manual for the details.
            May 5, 2016 at 1:54 am #36017
            garry-in-michigan
            Participant

              Lifetime Member

              Sorry I was slow … . . . . . 😳


              May 5, 2016 at 5:31 pm #36043
              1946zephyr
              Participant

                I believe gear cases from 1951 to 1954 are the same on the Big Twin class. It’s the QD’s and Fastwins, that had the different styles in the first two years.
                The larger horsepower had their changese in 1955 and added the larger rear bolt.

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