Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 15-05-2013, 06:20   #16
Moderator
 
noelex 77's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: Living on dirt waiting for our new yacht to be built.
Boat: Half built Bestevaer.
Posts: 10,619
Re: Dripless Shaft Seal Inspection & Maintenance?

Quote:
Originally Posted by Dockhead View Post
Hah, me too!

I come out briefly every two months for a scrub off, anyway. Can it be done in 45 minutes? That's how long I get to do whatever I need to do below the waterline, according to my price plan.
Mine took most of a day, but I had to take the Maxiprop off as well to get enough room.
It should ordinarly be possible in 45 mins. Make sure you can free the shaft coupling easily by checking the bolts loosen beforehand.
__________________

__________________
noelex 77 is offline   Reply With Quote
Old 15-05-2013, 06:28   #17
Certifiable Refitter/Senior Wannbe
 
Wotname's Avatar

Cruisers Forum Supporter

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: Van DeStat Super Dogger 31'
Posts: 7,336
Re: Dripless Shaft Seal Inspection & Maintenance?

Quote:
Originally Posted by Dockhead View Post
Hah, me too!

I come out briefly every two months for a scrub off, anyway. Can it be done in 45 minutes? That's how long I get to do whatever I need to do below the waterline, according to my price plan.
Bludi 'ell, what job can be done 45 mins One stuck set screw, hose clamp or whatever will chew up an hour or so.....
__________________

__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is offline   Reply With Quote
Old 15-05-2013, 07:46   #18
Registered User
 
S/V Alchemy's Avatar

Join Date: May 2008
Location: Toronto
Boat: Custom 41' Steel Pilothouse Cutter
Posts: 4,577
Re: Dripless Shaft Seal Inspection & Maintenance?

Quote:
Originally Posted by Dockhead View Post
Is that all? Sounds far too simple. ..
As far as I can tell, having just installed one, that's about it. If needed, "burp" the rubber accordian bit. It's an either/or sort of device.

The only specificities I've heard of is that they CAN (eventually) wear out, but the drips will demonstrate that. I have also heard that they are not suitable for direct-drive Atomic 4s, because their shafts spin too fast for the mated surfaces to cope with.

Other than that, keep the relief hose above the WL and double-clamped and you are good.
__________________
Can't sleep? Read www.alchemy2009.blogspot.com for fast relief. Can't read? Avoid www.volumesofsalt.blogspot.com, because it's just personal reviews of sea books.
S/V Alchemy is offline   Reply With Quote
Old 15-05-2013, 07:54   #19
Registered User

Join Date: Dec 2009
Posts: 3,016
Images: 4
If you worry about water spurting into the boat, and who wouldn't, perhaps you should get some practice jumping in the water to plug the prop shaft, no? There is not always a Travellift handy...
__________________
daddle is offline   Reply With Quote
Old 15-05-2013, 08:14   #20
Registered User
 
Exile's Avatar

Join Date: Sep 2010
Location: Land of Disenchantment
Boat: Bristol 47.7
Posts: 2,966
Re: Dripless Shaft Seal Inspection & Maintenance?

PYI/PSS sells a kit for $105 US which includes a replacement bellows, along with new hose clamps, o-rings, & set screws. It's probably critical to replace all of these components, not just the bellows. The set screws, for example, are only designed to be used once, come with Loctite pre-applied, and include a second set that are designed to secure the first set. The mfg. recommended replacement interval is six years, although they caution that things like gas-off from flooded batts., ozoneators, along with oil, coolant, etc., can accelerate the bellows wear. You'll need to know your prop shaft & shaft log diams. before placing your order.

I'm getting ready to do a replacement myself for the first time with the boat out of the water. It looks like a pretty straightforward job, with the exception of getting the shaft coupler off which is likely dependent on the last time it has been removed. I personally wouldn't trust myself to do the job with the boat in the water, but it's good to know it can be done if need be. Also good to know that the mfg. recommended six-year replacement interval may be conservative, but again this is apparently dependent on outside factors unique to each boat. I'm doing mine after 4.5 years, but that's partly due to the boat getting hauled out for bottom paint & seacock maint., and I'm hoping to get another 2-3 years on my new bottom paint.

Here's a link to the mfg. website, which also includes links to how-to videos, etc:

http://http://www.shaftseal.com/en/about/shaftseal_maintenance_kit
__________________
Exile is offline   Reply With Quote
Old 15-05-2013, 08:38   #21
CF Adviser
 
Bash's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: sausalito
Boat: 14 meter sloop
Posts: 7,260
Re: Dripless Shaft Seal Inspection & Maintenance?

Quote:
Originally Posted by noelex 77 View Post
PSS recommend every 5 years. I think they are being very conservative, but if it is now 12 years old I would replace it at the next haul out.
.
They suggest "preventative maintenance" every six years. Beyond that, they recommend regular inspection, and replacing at "any sign of wear, aging or chemical deterioration."

Here's the link: PSS Shaft Seal
__________________
cruising is entirely about showing up--in boat shoes.
Bash is offline   Reply With Quote
Old 15-05-2013, 09:14   #22
Registered User

Join Date: Jun 2008
Location: seattle
Boat: Devlin 48 Moon River,j/100 BJ
Posts: 586
Re: Dripless Shaft Seal Inspection & Maintenance?

Why? If the units need so much care and are make or break(sink your boat) why spend the money when the new school packing can be drip-less or as dry as a drip-less. My drip-less was not 100% dry. Now on my new boat I have standard box with new school packing and it is dryer than drip-less and easier to maintain. Duramax Ultra X packing
__________________
eyschulman is offline   Reply With Quote
Old 15-05-2013, 09:18   #23
Senior Cruiser
 
delmarrey's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Now in Blaine, WA
Boat: Modified Choate 40
Posts: 10,702
Images: 122
Re: Dripless Shaft Seal Inspection & Maintenance?

Quote:
Originally Posted by eyschulman View Post
Why? If the units need so much care and are make or break(sink your boat) why spend the money when the new school packing can be drip-less or as dry as a drip-less. My drip-less was not 100% dry. Now on my new boat I have standard box with new school packing and it is dryer than drip-less and easier to maintain. Duramax Ultra X packing
Some people find it a bit hard to stand on their head using one arm to adjust the nuts on an old unit, so would rather spend the money every 6-10 years.
__________________
Faithful are the Wounds of a Friend, but the Kisses of the Enemy are Deceitful! ........
A nation of sheep breeds a government of wolves!

Unprepared boaters, end up as floatsum!.......
delmarrey is offline   Reply With Quote
Old 15-05-2013, 10:02   #24
Registered User

Join Date: Jun 2008
Location: seattle
Boat: Devlin 48 Moon River,j/100 BJ
Posts: 586
Re: Dripless Shaft Seal Inspection & Maintenance?

Standing on my head I find it less effort to adjust the nuts on the box than getting a sheet of wet -dry sandpaper in and all around the matting surface of a drip-less unit. Admittedly some units go in and can be forgotten unfortunately not all.
__________________
eyschulman is offline   Reply With Quote
Old 15-05-2013, 10:59   #25
Registered User
 
Tortuga's Lie's Avatar

Join Date: Oct 2007
Location: Virginia
Boat: Tartan 4100
Posts: 384
Re: Dripless Shaft Seal Inspection & Maintenance?

I guess mine's ready for a replacement.....I've got at least 10 years on mine.
I guess you can do it in the water as long as you have access to the exit point of the shaft. Dive over with that electrical putty that electricians use to seal wires exiting walls (available at Lowe's or H.D.) and pack it tightly around the shaft. After loosening up the shaft from the coupling and the shaft seal is loose, have someone hold the putty in place while you push the shaft out a little. Might wanna make sure that the bilge pump is on!
__________________
Tortuga's Lie is offline   Reply With Quote
Old 15-05-2013, 12:23   #26
Senior Cruiser
 
delmarrey's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Now in Blaine, WA
Boat: Modified Choate 40
Posts: 10,702
Images: 122
Re: Dripless Shaft Seal Inspection & Maintenance?

It's not all that hard to do in the water. Once the shaft coupler is off all it takes is some rags to stuff around the shaft while switching out parts. I swapped a packing unit for a PSS in the water and only got a couple quarts of water in the boat, just using rags from the inside.
__________________
Faithful are the Wounds of a Friend, but the Kisses of the Enemy are Deceitful! ........
A nation of sheep breeds a government of wolves!

Unprepared boaters, end up as floatsum!.......
delmarrey is offline   Reply With Quote
Old 15-05-2013, 17:57   #27
Senior Cruiser
 
Randyonr3's Avatar

Cruisers Forum Supporter

Join Date: Nov 2007
Boat: Beneteau FIRST 42
Posts: 1,836
Re: Dripless Shaft Seal Inspection & Maintenance?

I just last week replaced the unit.. in the water.. and went back to the old style with the packing ..
Reason being, I've had problems with mine.. whenever I've put it in reverse, the prop blows water back up the log and the spring isnt enough to keep it from blowing water into the boat.. had an issue once where I was anchored in weedy area and garbage was blown up the log and wedged between the carbon and stainless and after the bilge pump kicked on a couple times, I started checking where the water was comming from.. yep, shaft seal...
Not saying the system is bad, it work but just not for me.. and being This next time out we'll be gone for a few years, I dont want to get stuck in some off-the-wall area needing pieces for my dripless unit.. With the packing now avalable, there is no need to go to a dripless unit..
By the way, to keep the water out, got the idea from another here on the forum,
visit your local home depot or hardware store for a wax ring for a toilet.. ball the wax into palm size and dive on the boat.. with your palm, push the wax around the shaft into the hull..
spent about 20 minutes in the water and when I got back into the boat and removed the unit, not a drip of water.. worked in a completely dry inviorment..
but I did keep an aux. pump handy just in case...
__________________
Randyonr3 is offline   Reply With Quote
Old 15-05-2013, 18:58   #28
Don't ask if you can't handle it
 
sailorboy1's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: On the boat somewhere
Boat: Hunter 410
Posts: 12,336
Re: Dripless Shaft Seal Inspection & Maintenance?

You should have a plan for WHEN the bellows decides to leak and start spraying water into the boat!!!! And you better hope when that time comes that the boot only leaks and doesn't split down the seam.

Last year I made it to haul out time when my bellows started leaking by wrapping it with rescue tape.
__________________
jobless, houseless, clueless, living on a boat and cruising around somewhere
sailorboy1 is online now   Reply With Quote
Old 15-05-2013, 20:02   #29
Senior Cruiser

Cruisers Forum Supporter

Join Date: Dec 2006
Location: Seattle
Boat: Cal 40
Posts: 2,401
Images: 7
Re: Dripless Shaft Seal Inspection & Maintenance?

Quote:
Originally Posted by eyschulman View Post
Why? If the units need so much care and are make or break(sink your boat) why spend the money when the new school packing can be drip-less or as dry as a drip-less. My drip-less was not 100% dry. Now on my new boat I have standard box with new school packing and it is dryer than drip-less and easier to maintain. Duramax Ultra X packing
I didn't know how long my PSS had been on the boat when I bought it. PYI told me my bellows was at least 15 years old, it looked fine when I took it off.

How often do you change your stuffing box hose? If it fails it's the same problem.

From: How To: Stuffing Box Upkeep | Cruising World
replace the flexible hose every five years or so.

Maine Sail thinks they should be replaced around 10 years
If the stuffing box fails ?

That being said catastrophic failures are VERY rare in traditional or PSS seals and if you replace the hose every ten or so years (6-7 with PSS),
__________________
cal40john is offline   Reply With Quote
Old 15-05-2013, 20:28   #30
Senior Cruiser
 
delmarrey's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Now in Blaine, WA
Boat: Modified Choate 40
Posts: 10,702
Images: 122
Re: Dripless Shaft Seal Inspection & Maintenance?

Quote:
Originally Posted by Randyonr3 View Post
I just last week replaced the unit.. in the water.. and went back to the old style with the packing ..
Reason being, I've had problems with mine.. whenever I've put it in reverse, the prop blows water back up the log and the spring isnt enough to keep it from blowing water into the boat.. had an issue once where I was anchored in weedy area and garbage was blown up the log and wedged between the carbon and stainless and after the bilge pump kicked on a couple times, I started checking where the water was comming from.. yep, shaft seal...
Not saying the system is bad, it work but just not for me.. and being This next time out we'll be gone for a few years, I dont want to get stuck in some off-the-wall area needing pieces for my dripless unit.. With the packing now avalable, there is no need to go to a dripless unit..
By the way, to keep the water out, got the idea from another here on the forum,
visit your local home depot or hardware store for a wax ring for a toilet.. ball the wax into palm size and dive on the boat.. with your palm, push the wax around the shaft into the hull..
spent about 20 minutes in the water and when I got back into the boat and removed the unit, not a drip of water.. worked in a completely dry inviorment..
but I did keep an aux. pump handy just in case...
I think I would be checking your motor mounts to see if the motor is moving when under power. It sounds like your bellows was loosing it's pressure. Unless this is a power boat with lots and lots of thrust.
__________________

__________________
Faithful are the Wounds of a Friend, but the Kisses of the Enemy are Deceitful! ........
A nation of sheep breeds a government of wolves!

Unprepared boaters, end up as floatsum!.......
delmarrey is offline   Reply With Quote
Reply

Tags
inspection, maintenance, paracelle

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 16:17.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.