Yanmar 3YM20 sea water pump leak...repair or replace? - 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? 


Like Tree2Likes
  • 2 Post By azguy
Reply
 
LinkBack Thread Tools
  #1  
Old 09-30-2013
NewportNewbie's Avatar
Senior Member
 
Join Date: Jul 2011
Location: Newport Beach
Posts: 504
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 4
NewportNewbie is on a distinguished road
Yanmar 3YM20 sea water pump leak...repair or replace?

Got a leaking sea water pump on my yanmar 3YM20. The leak is from the rear f the pump behind the impeller. I have read you can repair them. Is it an easy job? The replacement pump is about $270 from my local yanmar dealer. I know the rebuild is cheaper but how long will it last and will it be less hassle to replace the whole unit?
__________________
S/V Cuajota - 1975 WD Schock Santana 30

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #2  
Old 09-30-2013
overbored's Avatar
Senior Member
 
Join Date: Oct 2010
Location: Dana Point, Ca
Posts: 951
Thanks: 1
Thanked 35 Times in 35 Posts
Rep Power: 4
overbored is on a distinguished road
Re: Yanmar 3YM20 sea water pump leak...repair or replace?

depends on the problem if it is just a seal then it is cheap but if the shaft is worn then a new seal will help but might not fix it for long. the shaft is about $100 and can be removed by removing the pulley and tapping out the shaft with a soft hammer. it does take a little mechanical know how. buying a new one is a easier and if yours requires more then a seal may be the better way to go
__________________
"FULL TILT" SOVEREL 33
"GOLD RUSH" PRINDLE 16
Reply With Quote Share with Facebook
  #3  
Old 09-30-2013
azguy's Avatar
Senior Member
 
Join Date: Jul 2012
Location: Scottsdale
Posts: 537
Thanks: 0
Thanked 14 Times in 14 Posts
Rep Power: 3
azguy is on a distinguished road
Re: Yanmar 3YM20 sea water pump leak...repair or replace?

Buy a new one to replace the current one and then rebuild the old one in case of emergencies
RobGallagher and Seaduction like this.
Reply With Quote Share with Facebook
  #4  
Old 09-30-2013
NewportNewbie's Avatar
Senior Member
 
Join Date: Jul 2011
Location: Newport Beach
Posts: 504
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 4
NewportNewbie is on a distinguished road
Re: Yanmar 3YM20 sea water pump leak...repair or replace?

Thx. I think I will buy a new one and keep the old as a spare.
__________________
S/V Cuajota - 1975 WD Schock Santana 30

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #5  
Old 09-30-2013
trantor12020's Avatar
Senior Member
 
Join Date: Mar 2006
Location: Singapore
Posts: 674
Thanks: 2
Thanked 10 Times in 10 Posts
Rep Power: 9
trantor12020 is on a distinguished road
Re: Yanmar 3YM20 sea water pump leak...repair or replace?

What i did was buy a new shaft and the bearings, oil seal, spacer, c-clips, o-rings and disk, LH nut. Re Built both shafts (new and old). Fit new into pump and keep old rebuild as spares. Only bought shaft, LH nut, disk and spacer from Yanmar dealer. Oil seals, o-ring and bearings from auto supply shop. Use waterproof grease when rebuilding pump.
__________________
Ken
2002 Hunter 326, SV Millennium 2
1999 Macgregor 26X, SV Millennium
Reply With Quote Share with Facebook
Reply


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
yanmar 3ym20 raw water pump Ceezed Diesel 4 11-02-2011 10:15 PM
C&C 32 raw water pump for 2gm yanmar bigchump C & C 6 04-15-2011 08:55 AM
Yanmar 3ym20 pre mature water pump failure jbrockpiano Diesel 7 09-19-2010 09:25 AM
Replace fresh water pump? SteveInMD Diesel 2 04-22-2010 07:54 PM
raw water pump leak on Yanmar 3Gm30F gsyversen Gear & Maintenance 24 06-13-2008 01:34 AM


All times are GMT -4. The time now is 10:44 AM.

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.