Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 15-08-2014, 13:00   #1
Registered User

Join Date: Aug 2014
Posts: 1
Jabsco 29200 recirculates dirty water

I recently replaced 2 perfectly working manual jabsco head pumps with the 29200 electrical conversion kit.

When they flush to sea, all is fine. When they flush to the holding tanks (130cm higher than the pumps), some waste water gets mixed with the inlet feed and recirculates into the bowl.

I followed the advice of the installation manual and changed the pipe from the pump to the bowl so it goes vertically up to the level of the holding tank and then down to the bowl. That made the situation better, but did not completely solve the problem.

I am assuming I have no problems on the inlet side because the manual pumps worked just fine, and it is unlikely I will have the same problem in 2 different heads. Having said that, both inlets now have a filter that did not exist before, but surely that cannot make such a difference.

I have 4 questions:

1. Should the new pipe from the pump to the bowl be vented at the top? I can see that some bubbles move up from the bowl after flushing.

2. If not vented, is it better to have a tight U at the top or a wide one?

3. I am guessing the role of this new pipe is to equalise the pressure on both sides of the inlet pump. Is this correct?

4. Is it possible that the seals between inlet and waste on both pumps are now damaged? I have a week of continuous use before installing the new pipes.

Any other suggestion?


Sent from my D6503 using Cruisers Sailing Forum mobile app
Bashar is offline   Reply With Quote

jabsco, 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
For Sale: Jabsco conversion kit 29200 Patcheloupe Classifieds Archive 3 23-11-2013 09:25
Dirty Water Tanks - Yes or No Mark10 Monohull Sailboats 7 04-02-2012 10:58
Dirty Oil Rimica Engines and Propulsion Systems 8 15-12-2009 18:14
Dirty Diesel. Would you use this????? MarkJ Engines and Propulsion Systems 19 25-12-2008 00:44

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 23:39.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.