Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 11-01-2018, 18:42   #1
Registered User

Join Date: Feb 2017
Location: st croix
Boat: Hunter 410 1998
Posts: 89
Installing seal in waterpump

I have a Yanmar 3gm30 f
I am looking for help on installing seal in water pump
I tried putting the seal in hot water but that didn't help
Any advice
Attached Thumbnails
Click image for larger version

Name:	20180111_162209.jpg
Views:	127
Size:	428.8 KB
ID:	162034  
__________________

tjandoverguy is offline   Reply With Quote
Old 12-01-2018, 05:04   #2
Senior Cruiser
 
Sailmonkey's Avatar

Cruisers Forum Supporter

Join Date: Sep 2009
Location: Houston
Boat: '76 Allied Seawind II, 32'
Posts: 6,486
Re: Installing seal in waterpump

Have you ever installed a lip seal before?

If not, watch some you tube vids, and get ready to find the proper socket to hit gently with a hammer or rock or similar.
__________________

Sailmonkey is offline   Reply With Quote
Old 12-01-2018, 06:00   #3
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: 13,505
Re: Installing seal in waterpump

Hell you have the pump out, just take it to a machine shop and have them press it in properly.

"hit ..... with a rock" LOL so Stone Age :-)
__________________
jobless, houseless, clueless, living on a boat and cruising around somewhere
sailorboy1 is offline   Reply With Quote
Old 12-01-2018, 06:21   #4
Registered User

Join Date: Aug 2016
Location: East Cackalacky
Boat: Hunter 340, 1999, 34'
Posts: 181
Re: Installing seal in waterpump

I gently tap mine into place with a suitably sized socket and a soft mallet after putting a little silicone grease on it to help it go in. None ever has taken damage from it.
Attikos is offline   Reply With Quote
Old 12-01-2018, 08:29   #5
Registered User

Join Date: Oct 2014
Location: Panama City Beach, FL
Boat: Beneteau 343
Posts: 208
Re: Installing seal in waterpump

I made a wood jig with a hole saw so that I could tap the pump apart. Thanks for the reminder as it is time for me to change my seals. I didn't get to them soon enough and lost a pump a year and half ago.
EmeraldCoastSailor is offline   Reply With Quote
Old 12-01-2018, 08:40   #6
Registered User

Join Date: Jun 2007
Location: SW Florida
Boat: FP Belize, 43' - Dot Dun
Posts: 3,834
Re: Installing seal in waterpump

Use some impeller lubricant and push it in place. The spring goes towards the water/impeller.
DotDun is offline   Reply With Quote
Old 12-01-2018, 09:25   #7
Registered User
 
ullar's Avatar

Join Date: Dec 2011
Location: South Africa
Boat: Amel Euros 41
Posts: 172
Re: Installing seal in waterpump

Quote:
Originally Posted by EmeraldCoastSailor View Post
I made a wood jig with a hole saw so that I could tap the pump apart. Thanks for the reminder as it is time for me to change my seals. I didn't get to them soon enough and lost a pump a year and half ago.
How did you loose that pump? What happened?
ullar is offline   Reply With Quote
Old 13-01-2018, 00:35   #8
Registered User

Join Date: Jan 2016
Location: San Diego, CA
Boat: Beneteau 40.7
Posts: 127
Re: Installing seal in waterpump

I have a Volvo Penta so not sure about the Yanmars but a leaking seal lets salt water into the shaft ball bearings. I pressed the entire shaft apart and replaced 2 seals and 2 bearings.
thunderhoof is offline   Reply With Quote
Old 14-01-2018, 09:45   #9
Registered User

Join Date: May 2014
Posts: 256
Re: Installing seal in waterpump

If you can't get it over the shaft end, take a deep breath and relax.

Find a socket with an outer dimension slightly larger than the shaft. Heat the seal gently and force it onto the socket using your vise or board/hammer, chair leg, what ever. Wait 20 minutes or so for the seal to relax to the new dimension. Slide the seal off the socket directly onto the shaft and seat it before it settles back to its original size. Pvc pipe is a nice shaft seal tamper downer.
SeaSon is offline   Reply With Quote
Old 14-01-2018, 11:33   #10
Registered User

Join Date: Dec 2010
Location: W Carib
Boat: Wildcat 35, Hobie 33
Posts: 9,478
Re: Installing seal in waterpump

Quote:
Originally Posted by Attikos View Post
I gently tap mine into place with a suitably sized socket and a soft mallet after putting a little silicone grease on it to help it go in. None ever has taken damage from it.
This^. Raw water pump seals normally go in easily. They are just a standard lip seal and do not need to be pressed in.

Just keep them true with a properly sized pusher (socket, pvc pipe, wood jig...) and tamp them gently.

Old seals can be pulled out with a pick.
belizesailor is offline   Reply With Quote
Old 14-01-2018, 11:37   #11
Registered User

Join Date: Dec 2010
Location: W Carib
Boat: Wildcat 35, Hobie 33
Posts: 9,478
Re: Installing seal in waterpump

Quote:
Originally Posted by thunderhoof View Post
I have a Volvo Penta so not sure about the Yanmars but a leaking seal lets salt water into the shaft ball bearings. I pressed the entire shaft apart and replaced 2 seals and 2 bearings.
From the pic also looks like a Johnson pump similar to the one used on Volvos. Regardelss, basic anatomy (seals, bearings, shaft, weep hole...) is the same on all sea water pumps I know of.
belizesailor is offline   Reply With Quote
Old 15-01-2018, 02:28   #12
Registered User

Join Date: Mar 2012
Location: Southampton
Boat: Dufour 385
Posts: 19
Re: Installing seal in waterpump

if the shaft is worn like mine was then new seal may not fix it. I replaced the seal with a double lipped seal so the seal lip is now further down the shaft. that was about 3 years back still no leaks.
ballvalve is offline   Reply With Quote
Old 16-01-2018, 04:06   #13
Registered User

Join Date: Dec 2010
Location: W Carib
Boat: Wildcat 35, Hobie 33
Posts: 9,478
Re: Installing seal in waterpump

Quote:
Originally Posted by ballvalve View Post
if the shaft is worn like mine was then new seal may not fix it. I replaced the seal with a double lipped seal so the seal lip is now further down the shaft. that was about 3 years back still no leaks.
Another option is to sleeve the shaft:

http://www.skf.com/us/products/seals...eve/index.html

New shaft for a raw water pump is not that expensive or hard to replace, but sleeving can save lots of time and money on other types of shafts...like sail drive shafts ($$!).
__________________

belizesailor is offline   Reply With Quote
Reply

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
Yanmar SD50 Forward Seal Service Interval and Engine Rear Seal? cdiversions Propellers & Drive Systems 4 24-12-2016 19:10
For Sale: Tides marine Sure Seal 2" x 3.5" shaft seal tkeithlu Classifieds Archive 0 25-06-2016 11:19
Raritan PHII shaft seal doesn't (seal) skipgundlach Plumbing Systems and Fixtures 0 14-03-2016 10:18
Shaft Seal - PSS or Tides Marine Lip Seal ? Lennie Construction, Maintenance & Refit 40 13-08-2015 09:36
Rub Rails: To Seal or Not to Seal ? rognvald Construction, Maintenance & Refit 3 12-11-2011 15:13



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 17:46.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.