Reply
 
Thread Tools Search this Thread Display Modes
 
Old 04-10-2017, 06:08 PM   #1
Guru
 
djmarchand's Avatar
 
City: Litchfield, Ct/Punta Gorda, Fl
Country: USA
Vessel Model: Atlas Pompano 23
Join Date: Aug 2012
Posts: 4,843
Jabsco Par-Max pump with quick connectons

This is a rather arcane question and is long and involved, but if you have stayed with me this far, here goes:

I was dewinterizing my boat yesterday and noticed that a connection to the fresh water Jabsco Par-Max pump was leaking. Now let me say right here that it was not due to freeze damage as that pump had full strength antifreeze pumped through it last fall.

The connection was one of the quick connects that are used on this type of pump. It is a male fitting with an o-ring on it that pushes into a female opening that has a locking tab that holds the male fitting in place. I have used them on several other boats and they seal well and are convenient to make up the pump connections.

So I pulled the pump and took a look. On the suction side (which was not leaking) the female part had a circular base that the male fitting butted up against. But the discharge side (the one leaking) had a square base inside the female part.

Why square? Admittedly I don't see how the square base would cause the leak as the o-ring is what seals it off to the ID of the female opening. Is it possible that there is some rubber or plastic insert that is supposed to go into the square opening? But there was no such insert on either suction or discharge and it didn't look like there was enough depth for one to fit in there and still lock with the locking tab.

So, I am puzzled. I slobbered the whole male/female fitting with Lifecaulk and buttoned it up. I will see tomorrow if it has held. If it still leaks I guess I will buy a similar pump with supplied male fittings and replace the whole mess.

But again- why round on the suction and square on the discharge? And why did it seal tight for 14 years until yesterday?

David
__________________
Advertisement

djmarchand is offline   Reply With Quote
Old 04-10-2017, 06:27 PM   #2
Enigma
 
RT Firefly's Avatar
 
City: Slicker?
Country: Bumpkin?
Join Date: Oct 2007
Posts: 12,758
Greetings,
Mr. dj. The only reason I can think of for the different profiles might be to ensure that if the pump is ever removed it cannot be installed backwards. As to the male leaking while filled with full strength "anti-freeze"..Not an uncommon occurrence with advancing years.

Regarding the failure yesterday after 14 years? It was time my son...

__________________

__________________
RTF
RT Firefly is offline   Reply With Quote
Old 04-10-2017, 07:00 PM   #3
Guru
 
Lou_tribal's Avatar
 
City: Quebec
Country: Canada
Vessel Name: Bleuvet
Vessel Model: Custom Built
Join Date: Jan 2016
Posts: 3,514
I guess that difference square/round is to differenciate the two oulet and ensure the fitting is going to the right place like Mr RTF in his immeasurable wisdo wrote in the post above.
For the leak I am questioning why you want to replace the whole pump. If what is leaking is the fitting replace it. And even in that case check the oring. If it is not damaged put some silicon grease on the ring and put it back or replace the oring and see.

My 2 cents.

L.
Lou_tribal is offline   Reply With Quote
Old 04-10-2017, 07:15 PM   #4
Guru
 
dhays's Avatar
 
City: Gig Harbor
Country: United States
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 8,433
My thought was to get a new O-ring, then do as Lou suggested and use some Superlube on it and see if the leaking stops.
__________________
Regards,

Dave
SPOT page
dhays is offline   Reply With Quote
Old 04-10-2017, 07:58 PM   #5
TF Site Team
 
Pack Mule's Avatar
 
City: Paris,TN
Country: USA
Vessel Name: William
Vessel Model: Outer reef 32
Join Date: Jan 2013
Posts: 3,386
I had two old pumps in the basement . I had to go and look for myself . Yup that's how they are . This might sound stupid but maybe it's a fake way to get some more or less pressure , like trying to cram a square peg in a round hole ? Y'all go ahead and run with that wild observation .
Attached Thumbnails
Click image for larger version

Name:	IMG_2811.jpg
Views:	102
Size:	112.2 KB
ID:	63630   Click image for larger version

Name:	IMG_2806.jpg
Views:	83
Size:	75.4 KB
ID:	63631   Click image for larger version

Name:	IMG_2807.jpg
Views:	95
Size:	69.2 KB
ID:	63632  
Pack Mule is offline   Reply With Quote
Old 04-10-2017, 08:24 PM   #6
TF Site Team
 
Pack Mule's Avatar
 
City: Paris,TN
Country: USA
Vessel Name: William
Vessel Model: Outer reef 32
Join Date: Jan 2013
Posts: 3,386
The square port ( discharge ) is square deep into the pump also .
Attached Thumbnails
Click image for larger version

Name:	IMG_2812.jpg
Views:	75
Size:	81.8 KB
ID:	63633  
Pack Mule is offline   Reply With Quote
Old 04-11-2017, 08:21 AM   #7
Guru
 
jleonard's Avatar
 
Join Date: Jun 2008
Posts: 3,487
Might also be an assembly aid for the factory. Or to make sure it is connected properly when it's tested there. That sort of thing is very common.
__________________
Jay Leonard
Attitude Adjustment
40 Albin
Mystic,Ct. /New Port Richey,Fl
jleonard is offline   Reply With Quote
Old 04-11-2017, 10:50 AM   #8
Guru
 
djmarchand's Avatar
 
City: Litchfield, Ct/Punta Gorda, Fl
Country: USA
Vessel Model: Atlas Pompano 23
Join Date: Aug 2012
Posts: 4,843
Well, my caulking patch seems to be hiding pretty well. I think that Jay might have the clue. The square end may let it be driven in a lathe to machine the ID of the connections as well as the threads.

David
djmarchand is offline   Reply With Quote
Old 04-11-2017, 11:13 AM   #9
dvd
Senior Member
 
dvd's Avatar
 
City: California Bay Area
Country: US
Vessel Name: BOOSTER
Vessel Model: Nordic Tug 37
Join Date: Feb 2011
Posts: 362
What I find most amazing in this thread is that a Jabsco Par-Max pump lasted 14 years...
dvd is offline   Reply With Quote
Old 04-11-2017, 12:06 PM   #10
Guru
 
djmarchand's Avatar
 
City: Litchfield, Ct/Punta Gorda, Fl
Country: USA
Vessel Model: Atlas Pompano 23
Join Date: Aug 2012
Posts: 4,843
And still going strong with a dab of caulk.

David
djmarchand is offline   Reply With Quote
Old 04-11-2017, 12:29 PM   #11
TF Site Team
 
Pack Mule's Avatar
 
City: Paris,TN
Country: USA
Vessel Name: William
Vessel Model: Outer reef 32
Join Date: Jan 2013
Posts: 3,386
That's great news David. These are tough little
pumps . The only problem I had was the head cracked on one I was using for washown . I forgot to winterized
it .
__________________
Marty
Pack Mule is offline   Reply With Quote
Old 04-11-2017, 12:29 PM   #12
Guru
 
jleonard's Avatar
 
Join Date: Jun 2008
Posts: 3,487
Quote:
Originally Posted by djmarchand View Post
And still going strong with a dab of caulk.

David
"A little dab will do ya". Who else remembers that jingle?
__________________
Jay Leonard
Attitude Adjustment
40 Albin
Mystic,Ct. /New Port Richey,Fl
jleonard is offline   Reply With Quote
Old 04-11-2017, 12:57 PM   #13
Ted
Guru
 
Ted's Avatar
 
City: Campbell River
Country: Canada
Vessel Name: Okisollo
Join Date: Apr 2012
Posts: 643


Ted
__________________

Ted is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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





All times are GMT -5. The time now is 11:10 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012
×