leaking non drip shaft gland - SailNet Community
 
LinkBack Thread Tools
post #1 of 8 Old 05-26-2011 Thread Starter
Junior Member
 
Join Date: Mar 2008
Posts: 16
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 0
 
leaking non drip shaft gland

have a 2002 beneteau 36. It has a non drip style stern gland and it's leaking significantly. not familiure with this type. anything i can do, look at to adjust / repair. No obvious means to do anything. Sort of black coloured tapered plastic looking device.
any help anyone?
Greguk is offline  
Sponsored Links
Advertisement
 
post #2 of 8 Old 05-27-2011
Senior Member
 
Join Date: Oct 2009
Location: Cape Cod
Posts: 1,641
Thanks: 19
Thanked 106 Times in 103 Posts
Rep Power: 10
 
last drop?

I don't know exactly what you have, but I had a last drop fitting problem on a previous boat that turned my dripless fitting into a rotary sprinkler for the engine room.

If its like what I had, there is a bellows of some sort that wears against a donut shaped item that is attached to your shaft. The principle is that the pressure of the spring in the bellows against the donut is what stops the drip. In my case, the donut, which was held to the shaft with a set screw, had slipped forward. This caused less pressure from the bellows part, and therefore the leak.

If, and I emphasize IF, that is what happened to you, it can be corrected by pushing the donut back, and retightening the set screw. For belt and suspenders, you can also put a shaft zinc in front of the donut (between the donut and the transmission). This way if the set screw moves again, the shaft zinc might stop its forward progress preventing this failure.

DISCLAIMER: AGAIN, you've given very little information on your setup, which may be different or failing in a different way, so use caution and seek professional help if you are in doubt. The shaft log is a major hole in your boat and can sink you if it fails.
capecodda is online now  
post #3 of 8 Old 05-27-2011
Senior Member
 
JimsCAL's Avatar
 
Join Date: May 2007
Location: Glen Cove, NY
Posts: 4,413
Thanks: 5
Thanked 202 Times in 194 Posts
Rep Power: 13
 
Could be several things - some that can be fixed easily, others that will probably require hauling and replacement.
JimsCAL is online now  
 
post #4 of 8 Old 05-27-2011
Senior Member
 
sailortjk1's Avatar
 
Join Date: Dec 2005
Location: Porter, IN
Posts: 4,647
Thanks: 1
Thanked 1 Time in 1 Post
Rep Power: 15
   
Do you know that you have to purge the air from the seal everytime the boat is relaunched? We are in the midwest and our boat is hauled out each Fall. In the Spring when the boat is launched every season the seal has to be purged of air. It's simple to do. Some call it Burping the Seal. You might want to try this now.
They are easy enough to replace. but require the boat being hauled out.
Benny uses a Volvo seal and I think they are generic for most of the line. Replacements are available through Benny and Ward will be able to help you order one.
They are suggested to be replaced every 5 years or so.

Courtney is My Hero

If a man is to be obsessed by something, I suppose a boat is as good as anything, perhaps a bit better than most - E.B. White
sailortjk1 is offline  
post #5 of 8 Old 05-27-2011
Member
 
Join Date: Mar 2010
Location: SF - South Bay
Posts: 599
Thanks: 1
Thanked 22 Times in 22 Posts
Rep Power: 10
 
Try "burping" or "milking" the seal. Basically (Not when motor is running!! And before you start the motor...) all you do is reach down to the rubber bellows of your non-drip, and compress them - normally that means pushing the non-drip gland down the shaft towards the prop. As you do this, water will squirt out. Do this a couple of times, clean up, and see it if helps.

Sometimes air or even microscopic amounts of dirt can get into the mechanism, and prevent the 'donut' from making a perfect seal, Milking it washes out any obstructions, letting it operate correctly. It fixed a very similar problem for me.

Good luck!
paul323 is offline  
post #6 of 8 Old 05-27-2011 Thread Starter
Junior Member
 
Join Date: Mar 2008
Posts: 16
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 0
 
thanks All.
No bellows. (I've had that type on other boats) This just looks like a tapered hard black plastic cone around the shaft, about 4" long. It does have a water compensation hose going to it at the end where the gland joins the hull. I will dry all up this w/e and see if i can discover where water is actually leaking in from.
Greguk is offline  
post #7 of 8 Old 05-27-2011
Moderator
 
Maine Sail's Avatar
 
Join Date: Jan 2003
Location: Maine Coast
Posts: 6,657
Thanks: 31
Thanked 354 Times in 274 Posts
Rep Power: 20
       
It sounds like a Volvo seal. They need to be greased annually and burped on launch.

______
-Maine Sail / CS-36T


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.




Images In Posts Property of Compass Marine Inc.


Maine Sail is offline  
post #8 of 8 Old 05-27-2011
Senior Member
 
Join Date: Feb 2002
Location: New Jersey
Posts: 175
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 18
 
Send a message via AIM to HPLou
I believe Maine Sail nailed the solution. However, a picture would definitely help to verify the seal type for confirmation and action to be done to take care of the problem.
HPLou is offline  
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Shaft Log Drip: What's acceptable? stuartsw Diesel 1 09-12-2010 07:07 PM
Mystery Prop Shaft Gland lawsonmitchell Gear & Maintenance 14 11-20-2009 04:32 PM
P.S.S. Shaft Seals Leaking on Older Boats ? backcreeksailor Gear & Maintenance 12 04-19-2009 11:35 PM
Leaking oil drip pan - liner? Mary51 Gear & Maintenance 13 08-07-2008 10:18 AM
Prop Shaft Packing Gland Alden68 Gear & Maintenance 10 03-23-2007 06:35 PM

Posting Rules  
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome