Stuffing gland which spins with shaft leaking?

Discussion in 'Inboards' started by DennisRB, May 6, 2010.

  1. DennisRB
    Joined: Sep 2004
    Posts: 1,270
    Likes: 26, Points: 48, Legacy Rep: 228
    Location: Brisbane

    DennisRB Senior Member

    The boat I have been working on is leaking a lot of water from the shaft when the shaft is spinning. (Roberts spray 36). It has a rubber gland which is clamped to the shaft and presses against flat surface on the stern tube which does not spin.

    When its not running it does not leak and when it is running its enough to get a continuous flow from the bilge pump. The stern tube has grease nipples on it close to the fitting. Is this a common type of fitting? Are they any good? Is it hard to replace it? How would I found out what type of fitting is required to fix it?

    And importantly do these things fail catastrophically or gradually?
     
  2. FAST FRED
    Joined: Oct 2002
    Posts: 4,519
    Likes: 110, Points: 63, Legacy Rep: 1009
    Location: Conn in summers , Ortona FL in winter , with big d

    FAST FRED Senior Member

    www.shaftsaver.com/ - sounds like you have a shaft saver.

    IT might be worn out (as well as the old shaft).

    Some water underway is normal/required and needed to lubricate and cool the rubber.


    FF
     
  3. DennisRB
    Joined: Sep 2004
    Posts: 1,270
    Likes: 26, Points: 48, Legacy Rep: 228
    Location: Brisbane

    DennisRB Senior Member

    Thanks Fred. It looks more like a black rubber plunger than a steel tube.
     
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