’57 Fastwin gearcase

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    bill-mcnamara

    Canada Member - 1 Year
    Replies: 216
    Topics: 55
    #233154

    I was about to open up the L/U today, and noticed that the lower half did not have the usual Phillips headed pivot pin on the outside of the starboard side housing.
    Proceeded to open it up, and found that the shifter cradle lifts out of 2 little cast “u” shaped supports in the lower clam half.

    This was a first for me, in about 2 doz of these lower units I have experience with so far.

    The clam has been worked on before, and has had a crack welded up on the port side from feeezing water I expect.

    I was wondering if the L/U had maybe been swapped out at some point, from an earlier motor?
    The motor itself is stamped in both ID locations as: 15020- 08457, assembled in Milwaukee.

    I will try to include a couple of pics.

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    JOHN HOLBIK


    Replies: 109
    Topics: 2
    #233157

    The older versions had that set up I do not remember what year OMC changed to the shoulder screw.

    Steve D
    Steve D


    Replies: 574
    Topics: 57
    #233166

    “I was wondering if the L/U had maybe been swapped out at some point, from an earlier motor?
    The motor itself is stamped in both ID locations as: 15020-08457”

    That looks like what happened Bill. The manual for ’57 shows motors up to 07000 used the pin, after that the screw/pin. Your ID shows it’s the later ’57 that would have the screw. The manual shows both in their diagram.

    pivot-pin-change

    • This reply was modified 1 month, 2 weeks ago by Steve DSteve D.
    • This reply was modified 1 month, 2 weeks ago by Steve DSteve D.
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    bill-mcnamara

    Canada Member - 1 Year
    Replies: 216
    Topics: 55
    #233179

    Thanks guys.
    I’ll look around in the barn for a suitable replacement if this case turns out to be a leaker….from welding distortion maybe?
    The parts diagram says it all, thanks Steve.
    Bill.

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