How to remove/replace the union fitting on top of pump

KRATC · Jan 2, 2014

Hello. I'm a new member and need some help. I'm a novice but can do some repair work on my equipment.

I have a Hayward Northstar pump and the union fitting on top of the pump just stared to leak, I figure the gasket. The pump is prior to year 2007 as far as replacement parts. It looks like it is threaded at the pump. My question is can I just unscrew the fitting at the pump and replace the gasket or maybe the kit? Or does the glued part of the pipe need be removed/cut?

jblizzle · Jan 2, 2014

Welcome to TFP!

If the pump uses a union fitting, then you can just unscrew it and check if the o ring is damaged. You should not need to cut any pipes unless the pump connection is a threaded fitting and not a union.

duraleigh · Jan 2, 2014

+1 what jblizzle said

KRATC · Jan 2, 2014

Thanks for the quick reply. Enclosed are pics to ensure I described the fitting correctly. The leak is underneath the screw/nut. If the union fitting is unscrewed are there any precautions? Will it take a strap wrench or?
As you can see there is an Jandy valve actuator, hopefully I will not have to remove it.

jblizzle · Jan 2, 2014

Only precaution is to have the pump off. Might need strap wrench ... Might only need your hands.

KRATC · Jan 3, 2014

jblizzle said:
Only precaution is to have the pump off. Might need strap wrench ... Might only need your hands.

Thanks for the feedback. The weather should be above freezing in a few days, I will get the part and give it a try.

jblizzle · Jan 3, 2014

I would open it up to determine of you actually need a new part before you buy one.