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post #1 of 6 Old 10-19-2012 Thread Starter
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Packing gland adjustment

Doing the adjustment on my packing gland. Before it was pouring water out in a stream that left a huge amount of water in the boat after a bilge pump failed. Now I have adjusted it and I get a drip every 20-30 seconds. Does that sound about right?

S/V Cuajota - 1975 WD Schock Santana 30

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post #2 of 6 Old 10-19-2012
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Re: Packing gland adjustment

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Originally Posted by NewportNewbie View Post
Doing the adjustment on my packing gland. Before it was pouring water out in a stream that left a huge amount of water in the boat after a bilge pump failed. Now I have adjusted it and I get a drip every 20-30 seconds. Does that sound about right?
Is that with prop turning? If so, I would say it is good, feel your prop (or measure with infra thermometer), It should be cool to warm, but not hot.

People say no drip at 0 revs, but mine normally drips some.
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post #3 of 6 Old 10-19-2012
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It should drip once a minute with the engine off. At the dock, turn on the engine and at idle put it in gear. It should remain cool with the shaft turning. There is a new material that doesn't leak. Had it installed when I had the bottom done. Boat stays dry now.
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post #4 of 6 Old 10-19-2012
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Re: Packing gland adjustment

NN,
If you haven't seen this link yet then you should read it: Re-Packing A Traditional Stuffing Box Photo Gallery by Compass Marine at pbase.com

Chances are you need to re-pack your stuffing box. Sounds difficult but in reality is pretty easy to do once you read the article above. The somewhat famous author of that link is not fond of the green "no drip" putty packing and there are some good cheaper packing materials he mentions in the article.

It sounds like your drip has slowed since you tightened the bolts. If this would be your first time replacing the stuffing box packing then maybe you can wait until your next haul out to do the full replacement, even though it can be done in the water.

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post #5 of 6 Old 10-19-2012 Thread Starter
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Thx. It was replaced last year when the boat was hauled and the bottom painted. I don't think it needs to be replaced just yet I think it just needed to be adjusted.

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post #6 of 6 Old 10-19-2012
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Re: Packing gland adjustment

Yes, you probably just need to sneak up on the right tension on the stuffing box nuts to get almost no drops with the shaft at rest. And no, your packing most likely does not need replacing if it was re-done last year. Re-packing the stuffing box is more like a 5+ year maintenance event.
As others have noted, you can check the temperature of the stuffing box after the shaft has been spinning for a while with your hand. You just don't want it to run hot to the touch.
Perhaps NewportNewbie was not the best long term screen name for you, as you seem to have learned quite a lot in not so long, which is good!

It took me several tries to get our stuffing box nuts just right after we replaced the shaft, cutless bearing, shaft log hose and packing material this spring. It takes some tweaking, is all.

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