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3288 stuffing box-gctid396363

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    3288 stuffing box-gctid396363

    Well I had my boat out of the water, so I thought I would repack the stuffing boxes. It was a little difficult getting the old packing out but I managed. I put 3 new rows of packing in each and hand tightened the nuts then just a slight turn with a wrench and tightened the locking nuts.

    I had never done this before, so I was a little nervous putting the boat back in the water. We lowered her in and tied to the dock. After about an hour there were no drips, so I left for a cruise. The drips started flowing pretty quickly and a greasy substance was oozing out at the top of the nut where it meets the shaft. I stopped and thought I better tighten both nuts. I read you shouldnt make any adjustments for 24 hours, but the drips were about 1 a second at idle so I did a small snug. It seemed to work, the drips slowed and the shaft remaind cool. The oozing continued, then subsided after abut 30 minutes.

    I was out for about an hour in total and when I returned to the dock and shut down there was a slow drip. (about 1 per minute) I left thinking that was ok. Im heading back down today to check things out, hopefully shes still floating.

    Does this sound like a typical experience? I was not expecting the oozing, not sure if thats normal, it wasnt mentioned in anything I read. I have only been boating for a year and its all new to me.

    Thanks.

    #2
    There should be no dripping at rest. Tighten so there is no dripping. Not sure about the oozing. What color and consistency was it.
    1997 3788/Cummins 6BTA 5.9 M2s (Sold)
    2003 Silverton 42c/Cummins 480CEs
    2019 Cobia 240 CC
    2006 Boston Whaler 13 Sport
    1985 3270/Hino 135s (Sold)

    Vero Beach, Fl.

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      #3
      What type of packing material did you use?

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        #4
        The oozing was the color and consistency of grease. Not sure what type of packing I used, it looked like a light brown rope that had been dipped in white wax.

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          #5
          Sounds like you installed flax packing impregnated with tallow (animal fat) - as the packing wears in and warms-up some of the tallow oozes out - I have seen this on some, but not all packing replacements. I suggest it is better to have a little more leakage and make slow adjustments, rather than over-tighten, drive-out the tallow, and over-heat the shaft.

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            #6
            Next time use a teflon/flax packing, no more grease.
            Pat says: DO-IT-RIGHT THE FIRST TIME!

            Bayliner 3870 "ALASKA33)
            Twin 350 GM power
            Located in Seward, AK
            Retired marine surveyor

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