Prop Shaft Packing Gland - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
  #1  
Old 03-21-2007
Alden68's Avatar
Armchair Horn Sailor
 
Join Date: Mar 2007
Posts: 320
Thanks: 1
Thanked 1 Time in 1 Post
Rep Power: 8
Alden68 is on a distinguished road
Prop Shaft Packing Gland

The packing gland/shaft seal on my boat (1968 Alden 32 m/s) has a grease reservoir with a cap threaded onto it. I am assuming that tightening the cap squeezes grease into the gland to slow the rate of water ingress. Does anyone know the proper use of this device (or is it as simple as it sounds) as well as the recommended grease type?

Thanks
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 03-21-2007
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 11 Times in 11 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
If this is what I think it is, the cap is for a grease gun nipple, to add grease to the fitting without disassembling it. A photo of it would go a long way to clarifying exactly what you've got.
__________________
Sailingdog

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

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Quick reply to this message Share with Facebook
  #3  
Old 03-21-2007
Senior Member
 
Join Date: Nov 2006
Posts: 242
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
tigerregis has a little shameless behaviour in the past
What you've got mr. KIA is a troll named Wilbur Hubbard . He just loves ya.
Reply With Quote Quick reply to this message Share with Facebook
  #4  
Old 03-21-2007
Alden68's Avatar
Armchair Horn Sailor
 
Join Date: Mar 2007
Posts: 320
Thanks: 1
Thanked 1 Time in 1 Post
Rep Power: 8
Alden68 is on a distinguished road
The cap is solid i.e. so opening or fitting to insert grease. I had previously removed the cap and dug out the grease in search of a nipple but there was nothing but the open end of a line which ran from the reservoir down to the packing gland. ??? Didn't we send someone to the moon 2 years prior to this being built?

I agree a pic would help and I will get one as soon as possible.
Reply With Quote Quick reply to this message Share with Facebook
  #5  
Old 03-22-2007
Senior Member
 
Join Date: Nov 2006
Location: Massachusetts
Posts: 376
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
Goodnewsboy is on a distinguished road
You have a fitting called a grease cup. It is both a reservoir and a means of injecting grease into the shaft log. The cap which you turn is meant to protect the grease in the cup and to provide a means to compress it so that it will flow into the shaft log. It allows you to grease the packing without a grease gun.

Properly used, it is a very nice thing. I would keep it full of waterproof grease (boat trailer wheel bearing type) and give the cap a half turn or so every time you put the boat up. It will help to stop the water drip during periods at the mooring or slip and will also keep the shaft well lubricated.

A grease cup should be completely filled with new grease whenever you find that you have turned the cap fully down in the threads and it cannot be turned further. After filling, you should replace the cap, but do not turn it down more than a complete turn or so. You just want to have it contact the new grease so that each future turn will feed some into the log. Each time you turn the cap, the packing gets a little new grease.

These are also found on rudder post bushings where they provide similar "no grease gun" advantages.

Last edited by Goodnewsboy; 03-22-2007 at 06:26 PM.
Reply With Quote Quick reply to this message Share with Facebook
  #6  
Old 03-22-2007
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 11 Times in 11 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
Cool... thanks for the info... I've seen the grease nipple-type fittings, but haven't really run into what he was describing...
__________________
Sailingdog

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

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Quick reply to this message Share with Facebook
  #7  
Old 03-22-2007
Senior Member
 
Join Date: Nov 2006
Location: Massachusetts
Posts: 376
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
Goodnewsboy is on a distinguished road
One thing I do not think I made sufficiently clear is that when you fill a grease cup, you first remove the cap and then put the new grease into it, not into the fixed half of the cup (It will still be full). When you put the cap back on, grease will start flowing within the first few turns of the cap.
Reply With Quote Quick reply to this message Share with Facebook
  #8  
Old 03-22-2007
Alden68's Avatar
Armchair Horn Sailor
 
Join Date: Mar 2007
Posts: 320
Thanks: 1
Thanked 1 Time in 1 Post
Rep Power: 8
Alden68 is on a distinguished road
Ahhhh....thank you. That would make a lot of sense. Well maybe this season I can give my bilge pump the season off!
Reply With Quote Quick reply to this message Share with Facebook
  #9  
Old 03-23-2007
Senior Member
 
Join Date: Nov 2006
Location: Massachusetts
Posts: 376
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
Goodnewsboy is on a distinguished road
For those interested, here are links that show various grease cups:

http://www.magnetoparts.com/grease_cups.htm
http://www.simrantools.com/lubricati..._cups_nut.html
http://www.lubedevices.com/06701.htm

and even grease selection guidance from Moyer Marine:
http://www.moyermarine.com/faq/6.2.html
Reply With Quote Quick reply to this message Share with Facebook
  #10  
Old 03-23-2007
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 11 Times in 11 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
Thanks for the links GNB.
__________________
Sailingdog

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

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Quick reply to this message Share with Facebook
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:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Changing prop underwater trantor12020 Gear & Maintenance 16 03-03-2007 12:02 PM
Choosing the Right Propeller Sue & Larry Gear and Maintenance Articles 0 02-04-2003 07:00 PM
Packing Gland Problems Sue & Larry Gear and Maintenance Articles 0 09-08-2002 08:00 PM
Packing Gland Leaks Mark Matthews Gear and Maintenance Articles 0 06-26-2002 08:00 PM
The Stuffing Box and Stern Tube Tom Wood Gear and Maintenance Articles 0 04-27-1999 08:00 PM


All times are GMT -4. The time now is 05:18 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.