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Shaft packing

Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=29966
Printed Date: November-18-2024 at 7:30am


Topic: Shaft packing
Posted By: stang7tl
Subject: Shaft packing
Date Posted: May-23-2013 at 6:53pm
I'm am new to inboards I have a 74 southwind. I am changing the packing out I have PTFE Flax available and the GTU. What do u all suggest? I am not keeping the boat in the water. But I do run in saltwater. Please help lm looking to do tonight or in the am and get on the water :)



Replies:
Posted By: baitkiller
Date Posted: May-23-2013 at 8:51pm
Use the GTU. Be careful not to over tighten it.

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Jesus was a bare-footer.............


Posted By: 8122pbrainard
Date Posted: May-23-2013 at 9:47pm
Originally posted by baitkiller baitkiller wrote:

Use the GTU. Be careful not to over tighten it.

The Gortex brand is "GFO".

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54 Atom

/diaries/details.asp?ID=2179" rel="nofollow - 77 Tique

64 X55 Dunphy

Keep it original, Pete
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Posted By: stang7tl
Date Posted: May-24-2013 at 12:51am
went with the GTU stuffing box only had 2 standard flax in it and was 1/4" i got 1/4" gtu and installed 2 right was tight to get seated but once in it moved down to shaft with just a little friction. I hand snugged it put boat in water it was dripping when still. So i tightened it a little more by hand till it stopped but I didnt get a chance to run the boat at all b/c of getting eaten alive at the dock LOL


Posted By: OverMyHead
Date Posted: May-24-2013 at 3:01am
That seal is not dripless, it should drip a few times per minute to lubricate and cool the seal.

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For thousands of years men have felt the irresistible urge to go to sea, and many of them died. Things got better after they invented boats.
1987 Ski Nautique



Posted By: 8122pbrainard
Date Posted: May-24-2013 at 6:44am
Originally posted by stang7tl stang7tl wrote:

went with the GTU stuffing box only had 2 standard flax in it and was 1/4" i got 1/4" gtu and installed 2 right was tight to get seated but once in it moved down to shaft with just a little friction. I hand snugged it put boat in water it was dripping when still. LOL

You should be able to get at least 3 rings in the gland. They are separate rings and not one length wrapped around the shaft in a spiral. The ring joints are staggered. If the gland runs hot, the packing nut is too tight.

http://www.pbase.com/mainecruising/stuffing_box" rel="nofollow - Here's a nice tutorial on the procedure

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54 Atom

/diaries/details.asp?ID=2179" rel="nofollow - 77 Tique

64 X55 Dunphy

Keep it original, Pete
<


Posted By: SNobsessed
Date Posted: May-24-2013 at 9:53am
Pete - That was a good coffee read, learned some things I didn't know about, like trapped air & crevice corrosion.

Do they still sell the moldable clay? That sounded like trouble!

FYI for everyone " GTU is a knock off of Gore GFO, but it frays worse due to the braid design . . . made by Western Pacific Trading and sold through West Marine, is that it tends to fray easily and does not make the cleanest cuts even when using a brand new razor blade."


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“Beer is proof that God loves us and wants us to be happy.”

Ben Franklin


Posted By: stang7tl
Date Posted: May-24-2013 at 10:13am
I was told the when the shaft is not spinning it is to be dripless, it drips when shaft is in motion


Posted By: SNobsessed
Date Posted: May-24-2013 at 10:19am
According to the article Pete posted, the best adjustment indicator is temperature - 10 to 20 degrees more than the lake water is best

Mine does drip some at rest, but I only boat for several hours at a time & get no more than a pint of water (including from the skiers!)

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“Beer is proof that God loves us and wants us to be happy.”

Ben Franklin


Posted By: 8122pbrainard
Date Posted: May-24-2013 at 8:19pm
They will drip when the shaft isn't rotating. If you don't get some water through the packing, you risk burning it up and even worse scoring the shaft.

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/diaries/details.asp?ID=1622" rel="nofollow -

54 Atom

/diaries/details.asp?ID=2179" rel="nofollow - 77 Tique

64 X55 Dunphy

Keep it original, Pete
<



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