Non-channeling Waterproof Grease

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  • June 17, 2015 at 2:19 pm #1775
    lightfoot
    Participant

      My 1939 2 hp Neptune 2A39 is supposed to use a "non-channeling waterproof grease". What do you guys recommend.

      Secondly, is the hole at the rear of the gear-case above the prop the fill hole, or do you pump it in through the typical drain hole toward the bottom?

      Thanks.

      June 17, 2015 at 2:34 pm #18269
      phil-b
      Participant

        Two popular choices for gearcases are Lubriplate 105 (now sold mostly for engine assembly),
        and "corn head grease", see viewtopic.php?f=2&t=919

        I was taught to fill from the bottom, to prevent air pockets from forming.

        June 17, 2015 at 3:12 pm #18271
        The Boat House
        Participant

          Sent you a PM

          June 17, 2015 at 8:05 pm #18289
          jcrigan
          Participant

            US Member

            I fill from the bottom, and I vent it by removing the top screw on the prop shaft bearing holder (what do you call this part?).

            June 17, 2015 at 8:54 pm #18291
            lightfoot
            Participant

              Thanks for all the suggestions guys, I had no idea what to use. Very helpful forum!

              June 17, 2015 at 9:52 pm #18294
              westwind
              Participant

                Canada Member

                +1 for John Deere Corn Head Grease, works well for me.

                June 18, 2015 at 2:43 pm #18366
                lightfoot
                Participant

                  One more question, I’m going to fill the gear housing from the bottom drain hole as suggested, but should I fill it until the grease starts to come out of the top hole?

                  June 18, 2015 at 5:26 pm #18384
                  dave-bernard
                  Participant

                    US Member

                    YEP!

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