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 :)
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Replies:
Posted By: baitkiller
Date Posted: May-23-2013 at 8:51pm
Use the GTU. Be careful not to over tighten it.
------------- Jesus was a bare-footer.............
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Posted By: 8122pbrainard
Date Posted: May-23-2013 at 9:47pm
baitkiller wrote:
Use the GTU. Be careful not to over tighten it. | The Gortex brand is "GFO".
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/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
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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.
------------- 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
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Posted By: 8122pbrainard
Date Posted: May-24-2013 at 6:44am
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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/diaries/details.asp?ID=2179" rel="nofollow - 77 Tique
64 X55 Dunphy
Keep it original, Pete <
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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."
------------- “Beer is proof that God loves us and wants us to be happy.”
Ben Franklin
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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
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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!)
------------- “Beer is proof that God loves us and wants us to be happy.”
Ben Franklin
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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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54 Atom
/diaries/details.asp?ID=2179" rel="nofollow - 77 Tique
64 X55 Dunphy
Keep it original, Pete <
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