Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 31-08-2015, 08:07   #1
Registered User

Join Date: May 2014
Posts: 21
Problems with raw water pump, Volvo Penta 2003T.

The pump was leaking.
I got the pump fully serviced all gaskets, seals etc replaced.
After few minutes with the engine in idle the pump was leaking again.

As it can be seen on the picture one of the seals inside has been pushed up.

Can anyone tell me why this can happen?

Thank for any comments.

Fair Winds
Attached Thumbnails
Click image for larger version

Name:	20150831_150623.jpg
Views:	344
Size:	405.7 KB
ID:	108178  
__________________

__________________
Four_winds is offline   Reply With Quote
Old 31-08-2015, 08:41   #2
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 17,045
Re: Problems with raw water pump, Volvo Penta 2003T.

Wasn't fully seated and or the bore is worn so much it isn't holding in the seal.
I have installed seals with contact cement with excellent results, don't let it dry, push the seal in when it's wet, and it's not too hard to remove at a later date too.
May or may not be a stop gap measure, depending on if your bore is worn / corroded or not.

On edit, I've never seen it, but I guess your cooling system could be so clogged that excessive pressure is building up and blowing the seal out?
__________________

__________________
a64pilot is offline   Reply With Quote
Old 31-08-2015, 09:11   #3
Registered User

Join Date: May 2014
Posts: 21
Re: Problems with raw water pump, Volvo Penta 2003T.

Thank you very much for your comments!

The engine have not many hours (less than 900).
I don’t think that the pump has high ware and tare .

I much more believe in the point of clogged water system. But there are cooling water coming out as it should?

Is it difficult to take the pump apart at home without special tools?
Same question for the heat exchanger. Can I take that apart by my self without special tools?

Thank you in anticipation
__________________
Four_winds is offline   Reply With Quote
Old 31-08-2015, 09:22   #4
Freelance Delivery Skipper..
 
boatman61's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: Jan 2010
Location: UK/Portugal
Posts: 20,203
Images: 2
Send a message via Skype™ to boatman61
pirate Re: Problems with raw water pump, Volvo Penta 2003T.

If you've had to replace a chewed up impellor in the past there's every possibility that bits of it have found their way into the heat exchanger.. had this happen on a Volvo MD2 years back.. also found the system itself was clogged badly with sludge at the side of the block.. so badly could barely see where the holes were..
Took it all off and cleaned thoroughly.. worked a treat afterwards.
If I can do it.. anyone with common sense can.. just take your time
__________________


Born To Be Wild
boatman61 is offline   Reply With Quote
Old 31-08-2015, 09:25   #5
Guy
Registered User

Join Date: Feb 2013
Location: So. Oregon, USA
Boat: Seafarer36c
Posts: 4,308
Re: Problems with raw water pump, Volvo Penta 2003T.

I would question if high pressure blew it out. This is not a pressure pump. Rubber vanes don't hold pressure very well. Maybe you should do it yourself Then you would know if maybe they damaged the seal bore taking the old seal out. If they did you may need to use glue to hold it in place.
If you change the water seal you should change the oil seal also, if the they didn't before.
__________________
Guy is offline   Reply With Quote
Old 31-08-2015, 09:30   #6
Registered User

Join Date: Apr 2006
Posts: 4,413
Re: Problems with raw water pump, Volvo Penta 2003T.

Probably the lip seal.

Volvo parts for these pumps may be out of production.

You may be able to have the pump rebuilt and the seal replaced... there ARE replacement seals by other makers.

There are a few versions of this pump... if it is used as a conversion to freshwater mounted on the front of the engine as mine was on the MD17D. If it's another pump etc... it can still be rebuilt.

I know a great shop that rebuilds and does it inexpensively and a fabulous job. Message me.
__________________
Sandero is offline   Reply With Quote
Old 31-08-2015, 09:31   #7
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 17,045
Re: Problems with raw water pump, Volvo Penta 2003T.

Quote:
Originally Posted by Guy View Post
Maybe you should do it yourself
I didn't catch that he didn't do it. I pay for very little mechanical work as it seems more often that not I'm having to re-do the work anyway.
Before you do anything else, you need to pull it apart and do it yourself, or maybe buy a new pump.
Course whoever did it, ought to warranty their work?
__________________
a64pilot is offline   Reply With Quote
Old 31-08-2015, 10:15   #8
Registered User

Join Date: May 2014
Posts: 21
Re: Problems with raw water pump, Volvo Penta 2003T.

The full story: I changed the impeller together with serviced the engine for two month ago before I went for a cruise. (The old impeller was one year old and looked fine but I change every year)

After four weeks of use I had the leak problem. The seal, as on the picture, was pushed up. Then I got the mechanic to make the full service on the pump. (It was during the cruise fare from home port)

So for me it sounds “logical” that the pipe system after the pump has a problem. But strange that still a lot of cooling water is coming out of exhaust??
__________________
Four_winds is offline   Reply With Quote
Old 31-08-2015, 10:40   #9
Registered User

Join Date: Apr 2006
Posts: 4,413
Re: Problems with raw water pump, Volvo Penta 2003T.

How much is leaking?

You may have a leak at the pipe seals... Volvo uses square profile O rings
__________________
Sandero is offline   Reply With Quote
Old 31-08-2015, 10:51   #10
Registered User

Join Date: May 2014
Posts: 21
Re: Problems with raw water pump, Volvo Penta 2003T.

It is not from the pipe connection. It is from the seal as shown on the picture.
__________________
Four_winds is offline   Reply With Quote
Old 31-08-2015, 12:12   #11
Registered User

Join Date: Jan 2008
Location: SF Bay Area (Boat in La Paz)
Boat: Valiant V40
Posts: 432
Re: Problems with raw water pump, Volvo Penta 2003T.

As I look at the photo, it looks like the seal has come out of the raw water side, but I do not see the bearing. Thus, it looks like the pump was assembled wrong.

The correct order of the parts from the raw water side is:

Impeller
Seal
bearing
distance piece
bearing
seal
drive gear
retainer

Google Volvo Penta 2003T raw water pump and images are readily available.
__________________
jamhass is offline   Reply With Quote
Old 31-08-2015, 12:54   #12
Guy
Registered User

Join Date: Feb 2013
Location: So. Oregon, USA
Boat: Seafarer36c
Posts: 4,308
Re: Problems with raw water pump, Volvo Penta 2003T.

[QUOTE=jamhass;1904147]As I look at the photo, it looks like the seal has come out of the raw water side, but I do not see the bearing. Thus, it looks like the pump was assembled wrong.

The correct order of the parts from the raw water side is:

Impeller
Seal
bearing
distance piece
bearing
seal
drive gear
retainer

What you say looks true but how could they do that? Now the bearing is probably ruined too.
__________________
Guy is offline   Reply With Quote
Old 31-08-2015, 13:38   #13
Senior Cruiser

Cruisers Forum Supporter

Join Date: Jul 2005
Boat: Outbound 44
Posts: 4,580
Re: Problems with raw water pump, Volvo Penta 2003T.

You can buy these pumps new from nonVolvo dealers. Check Depco for example.
__________________
Paul L
http://svjeorgia.blogspot.com
Paul L is online now   Reply With Quote
Old 31-08-2015, 14:34   #14
Registered User

Join Date: Nov 2013
Location: Slidell, La.
Boat: Morgan Classic 33
Posts: 1,102
Re: Problems with raw water pump, Volvo Penta 2003T.

Quote:
Originally Posted by jamhass View Post
As I look at the photo, it looks like the seal has come out of the raw water side, but I do not see the bearing. Thus, it looks like the pump was assembled wrong.

The correct order of the parts from the raw water side is:

Impeller
Seal
bearing
distance piece
bearing
seal
drive gear
retainer

Google Volvo Penta 2003T raw water pump and images are readily available.
Seals are on one side, bearings are on the other



A64pilot is on the right track. Also the seal could be defective, or undersized. Get a new seal from Depco or the local bearing house, and smear it lightly with some kind of glue when you reinstall it (I use automotive type silicone). Make sure it's bottomed out in it's recess, and that it's installed facing the right way.


It also looks like item 8 in the above drawing is missing in the picture you provided. Had this been in place you'd probably not have had this problem.

A properly functioning flexible impeller pump is a positive displacement pump; if the outlet is restricted is could easily produce enough pressure to force the seal out of it's housing, especially if the seal was slightly loose or not fully pressed into the housing.

Looks like the drive gear is held on with a circlip or snap ring, so maybe the only special tools you'll need are snap ring pliers. I grind the ends of needle nose pliers into points that fit the snap ring to remove them, for circlips, a couple of very small flat head screwdrivers can usually be used.
You'll also need some small hardwood blocks and/or dowels to drive the shaft, brgs and seals from the pump housing.
__________________
jimbunyard is offline   Reply With Quote
Old 31-08-2015, 14:57   #15
Guy
Registered User

Join Date: Feb 2013
Location: So. Oregon, USA
Boat: Seafarer36c
Posts: 4,308
Re: Problems with raw water pump, Volvo Penta 2003T.

As per that diagram the seal is in front of the bearing. In the picture the seal is where the bearing should be or have been. Where is the bearing?
__________________

__________________
Guy is offline   Reply With Quote
Reply

Tags
penta, raw water, raw water pump, volvo, 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Volvo Penta 2003T water leak Rustic Charm Engines and Propulsion Systems 60 17-01-2015 14:22
Volvo Penta MD22L Raw water pump problems drummer81 Engines and Propulsion Systems 3 03-05-2014 13:37
Would you ever consider buying a boat with a Volvo Penta 2003 or 2003T engine? JulieMac Engines and Propulsion Systems 39 22-02-2014 02:31
Need Volvo Penta 2003T oil cooler Gator Engines and Propulsion Systems 0 05-03-2013 14:22
Want To Buy: Volvo Penta 2003T Heat Exchanger corlfoot Classifieds Archive 0 12-10-2012 21:07



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 01:38.


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.