Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 11-07-2020, 16:26   #1
Registered User

Join Date: Feb 2008
Posts: 28
Leaking fresh water pressure pump

I have a jabsco parmax 4 fresh water pressure pump it it is leaking when under pressure - I thought it was the strainer but i took a video and it looks like it is coming from around the pressure switch (the blue block). I don't want to dismantle the pump if not necessary - is this an o-ring issued inside the pump or something worse?

https://youtu.be/s9pItR82lRE
__________________

barold is offline   Reply With Quote
Old 12-07-2020, 05:34   #2
Registered User
 
Turtle Blues's Avatar

Join Date: Aug 2015
Location: Chesapeake Bay
Boat: 30' Ericson / 42' Golden Star / Yard full of trailer boats
Posts: 13
Re: Leaking fresh water pressure pump

It appears in your video that the seal is failing at the high end of the pressurization indicating that the switch is possibly either partially clogged or just failing. Do you have a pressure gauge to verify cutoff pressure?
Easy to replace switch, 2 screws inside cover. Jabsco website should have pictures of disassembly if necessary.
__________________

Turtle Blues is offline   Reply With Quote
Old 12-07-2020, 06:44   #3
Senior Cruiser
 
tkeithlu's Avatar

Cruisers Forum Supporter

Join Date: Feb 2012
Location: Carrabelle, Florida
Boat: Fiberglas shattering 44' steel trawler
Posts: 2,126
Re: Leaking fresh water pressure pump

Here go. They're not rocket science. You can open it and repair it.
Attached Files
File Type: pdf Service PAR-MAX 31xxx and Flojet Quad .pdf (287.6 KB, 11 views)
__________________
Never let anything mechanical know that you are in a hurry.
tkeithlu is offline   Reply With Quote
Old 13-07-2020, 05:46   #4
Registered User

Join Date: Feb 2008
Posts: 28
Re: Leaking fresh water pressure pump

Thank you @turtle_blues and @tkeithlu. I don't have a pressure gauge but could pick one up easier (that might move me forward on a garden irrigation project...)

I think (hope it is just the seal. The pump does get to pressure (albeit noisily at the end) and a slower leak from that area ensues.

Will investigate replacing the seal or switch.
barold is offline   Reply With Quote
Old 26-07-2020, 18:20   #5
Registered User

Join Date: Feb 2008
Posts: 28
Re: Leaking fresh water pressure pump

So it was the pressure switch (there was a crack in the switch. I purchased and installed a replacement pressure switch but now the lump runs constantly (never pressurizes). I will investigate a pressure gauge to see if it is getting to 40psi but if anyone else has any ideas... (I marked the wires to ensure I plugged them into the right spot... I believe.
barold is offline   Reply With Quote
Old 28-07-2020, 12:45   #6
Registered User
 
Turtle Blues's Avatar

Join Date: Aug 2015
Location: Chesapeake Bay
Boat: 30' Ericson / 42' Golden Star / Yard full of trailer boats
Posts: 13
Re: Leaking fresh water pressure pump

Make sure that the diaphragm is seated correctly and then prime the pump. Trapping even a tiny bubble of air will cause problems. 2nd possibility is that there is something wrong or clogged in the piston section but it was previously working so that should not be an issue.
__________________

Turtle Blues is offline   Reply With Quote
Reply

Tags
pump, water

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
Fresh water pump leaking rnjpinz Engines and Propulsion Systems 3 16-10-2015 13:06
Fresh water pressure pump question - PlumBob Plumbing Systems and Fixtures 3 15-07-2013 13:01
Raw Water Pump vs Fresh Water Pump Cheechako Engines and Propulsion Systems 44 01-02-2012 15:31
Yanmar 3ym30 Fresh Water Pump: Seal Leaking olaf hart Engines and Propulsion Systems 2 09-04-2011 05:22
Rumbling Fresh Water Pressure Pump Nightowl Powered Boats 12 02-07-2010 06:55

Advertise Here


All times are GMT -7. The time now is 23:47.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.