Cruisers Forum

  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
Thread Tools Search this Thread Rate Thread Display Modes
Old 19-03-2011, 03:37   #1
Registered User
Capn Morgan's Avatar

Join Date: Jul 2009
Location: South East Asia
Boat: Hans Christian 48T
Posts: 381
Shaft Seal Cooling and Lubrication

Hi all

Just launched the boat and spent some days cruising. I found a problem and I wonder if I might find a solution from this learned community.

I changed both cutless bearings on the stern tube (long shaft). The forward one, nearer the engine, has a connection for water injection from the engine. Immediately forward of the bearing is the bellows of the PSS shaft seal. The shaft seal's static (carbon?) part also has a water connection, which in my boat was used for venting. During the first few hours of running I noticed that the shaft got quite hot to the touch. Water was not flowing forward. I opened the seal a few times to fill up the stern tube but it kept emptying after a while.

Not being able to think of anything else, I connected the water injection directly to the shaft seal and blanked the forward bearing's water inlet. This way the water can only get out from the aft end of the shaft.

The question is: is this correct? I have had no more heating and no leaking or strange screeching noises, but having limited knowledge I prefer asking.

All the best
Capn Morgan
'If you can fill the unforgiving minute with sixty seconds' worth of distance run...'
Capn Morgan is offline   Reply With Quote
Old 19-03-2011, 07:10   #2
Registered User
senormechanico's Avatar

Join Date: Aug 2003
Boat: Dragonfly 1000 trimaran
Posts: 7,031
Re: Shaft seal cooling and lubrication

I'd go straight to the source:

Telephone: 425-355-3669
Toll Free: 800-523-7558
Fax: 425-355-3661
PYI Inc.
12532 Beverly Park Rd.
Lynnwood, WA 98087-1524
The question is not, "Who will let me?"
The question is,"Who is going to stop me?"

Ayn Rand
senormechanico is offline   Reply With Quote

cooling, shaft seal

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Shaft Seal - PSS or Tides Marine Lip Seal ? Lennie Construction, Maintenance & Refit 40 13-08-2015 09:36
Shaft Seal - This Could Get Ugly... markpj23 Propellers & Drive Systems 49 15-11-2008 11:17
Shaft Seal ?'S westykids Propellers & Drive Systems 14 26-03-2007 19:40
Prop shaft seal JGI417 Propellers & Drive Systems 11 17-11-2006 23:38
Lasdrop shaft seal By Invitation General Sailing Forum 4 30-01-2006 18:44

Advertise Here

All times are GMT -7. The time now is 12:51.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.