Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 22-02-2014, 18:14   #1
cruiser

Join Date: May 2007
Location: Brisbane AUS
Boat: Cowther 43 - Hunter 40.5
Posts: 1,006
3GM30F E jonhson waterpump

Apparently there are 2 pumps for this engine. You can tell which is which by if the pump is sealed by an O ring or not. My version has the O ring which I was told is the Johnson pump.

Does anyone know the johnson part numbers for a full rebuilt kit? The pump is pissing out water out of somewhere. Does that mean I need bearings too?
__________________

__________________
dennisail is offline   Reply With Quote
Old 22-02-2014, 18:49   #2
TOM
Registered User

Join Date: Mar 2008
Location: On our yacht Byamee
Boat: Footloose 40 steel cutter
Posts: 316
Images: 1
Re: 3GM30F E jonhson waterpump

Hi , I had this problem on our yanmar last year alot of water coming out. You need to take the pump off {in our case this required taking off the engine mount} you will most likely find it is the "mechaical seal" that is the problem ,this is a ceramic seal with a spring they are about $20 to $30.

Call Johnson pumps and give them the pump no which will be on the outside of the wear plate. Beware the rebuild kit can sometimes be almost the price of a new pump .

Good Luck.
__________________

__________________
TOM is offline   Reply With Quote
Old 22-02-2014, 19:18   #3
cruiser

Join Date: May 2007
Location: Brisbane AUS
Boat: Cowther 43 - Hunter 40.5
Posts: 1,006
Re: 3GM30F E jonhson waterpump

Thanks. I have found a few horror stories about these pumps. Also the cost is insane for what looks like a $100 pump at best. I guess I should have left the pump off and brought it home with me. I didn't notice any numbers on the pump housing, but I was not looking.

What is a cost effective replacement pump for this engine? I heard I need to be careful when buying a new pump as the freshwater engine needs a bigger raw water pump to run the heat exchanger.
__________________
dennisail is offline   Reply With Quote
Old 22-02-2014, 19:26   #4
TOM
Registered User

Join Date: Mar 2008
Location: On our yacht Byamee
Boat: Footloose 40 steel cutter
Posts: 316
Images: 1
Re: 3GM30F E jonhson waterpump

I paid $398 for mine {Yanmar 4jh4te 75 hp 2010} the rebuild kit was $296 .
__________________
TOM is offline   Reply With Quote
Reply

Tags
3gm, 3gm30, water

Thread Tools
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




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 00:00.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.