Leakingg pump when off

gdog2004

Well-known member
Jul 19, 2011
164
Lehigh Valley, PA
#1
I have a heyward 2 speed pump. It works well but I notice when its off it likes around the filter basket. The lid is on tight nad thers no air in it, If I tighten it anymore I may break it. Suggestions ?
 

duraleigh

Admin
Mod Squad
TFP Expert
Platinum Supporter
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In The Industry
Apr 1, 2007
31,273
Sebring, Florida
#2
If it is leaking at the pump strainer basket lid, you have a misaligned or damaged O-ring most likely. Examine/replace that and it will probably stop.
 

gdog2004

Well-known member
Jul 19, 2011
164
Lehigh Valley, PA
#3
duraleigh said:
If it is leaking at the pump strainer basket lid, you have a misaligned or damaged O-ring most likely. Examine/replace that and it will probably stop.

How do you get to the O ring ? Is it between the lid and the basket ? Or underneath the basket ?
 

gdog2004

Well-known member
Jul 19, 2011
164
Lehigh Valley, PA
#5
OK I plugged up the outlet hose coming to the filter. Took off the cap, cleaned the basket, inspected the O ring. Looked perfect, right where it should be. I put the cap back on carefully and tightened it pretty good. It seems to have made the leaking stop, theres still maybe a drip. I don't want to tighten too hard. How many turns do you guys usually get ?
BTW--I think this is my issue, I am usually trying to put the cap on frantically while water gushes everywhere, taking my time with the hose plugged up I think I was able to make a more solid connection. It seems overnight with filter off i lost maybe 3-4 inches of water from this leak. Filling pool more as we speak.
 

duraleigh

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Mod Squad
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Apr 1, 2007
31,273
Sebring, Florida
#6
How many turns do you guys usually get ?
My lid doesn't screw on in the traditional sense. It has a 1/4 turn locking thread that basically just seats the )-ring in place. Pressure differential is what makes the seal (at least on my pump) so it is important the O-ring seal properly and evenly.

Place a shut-off valve in your line so water won't gush everywhere.
 

Qwaxalot

In The Industry
Jun 20, 2012
439
#7
Is that a Hayward pump with square pump basket? If so that gasket is particularly susceptible to dirt and distortion. Get a replacement gasket, pry out the old gasket and thoroughly clean out the groove that the gasket sits in as well as the mating surface on the lid (WD-40 is useful). Reinstall the gasket with a light film of lubricant and it should be fine.