Re: 55 RDE-17, 25 hp, Power Head O-rings, etc

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July 8, 2018 at 3:56 pm #79226
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    Would I replace both of the 302540 o-rings with a "quad" style,
    and what would be the part number?
    Is the larger 302537 o-ring on the bottom not replace with a quad
    style o-ring?
    Thanks.
    BTW, I got the motor pans off now. I didn’t even know they
    were two pieces until closer examination.
    Trying to get the power head screws out now to remove it, but
    having trouble with the ones on the starboard side not wanting
    to turn. 😥

    quote FrankR:

    Omc went to the "square" o-rings a few years after your motor was built. OMC calls it a "quad ring". They are better suited to a sliding shaft than an o-ring. The shaft is able to move up and down within the bearings, and the carbon seal must slide on it in order to stay in contact with the bearing.

    Prepare to be boarded!