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Thread: OMC GT 115/FT10 gearcase

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    Default OMC GT 115/FT10 gearcase

    I'm restoring FT10S Johnson. It has GT 115 gearcase.
    Does anyone know what is the torque on the pinion nut?
    There are two pinion gears and nuts.

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    I understood that Speedmaster pinion nut torque is 70 Nm and with Loctite.

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    Team Member zul8tr's Avatar
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    70n-m = 52 ft-lb seems high for such a small nut (from what I can estimate in the pic) yes on the locktite. Get a firm reliable answer on the torque.
    " Three may keep a secret if two of them are dead" Ben Franklin
    " ------- well Doctor what have we got a Republic or Monarchy? A Republic he replies if you can keep it"
    Benjamin Franklin, 1787 Constitutional Convention, as recorded by signer James McHenry's in his diary at the Library of Congress

    Location: SW Orlando, Fl

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    Now I have other problem with that lower unit. I don`t know what is correct load on the driveshaft when adjusting upper gears. Does anyone know?

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