Pump not sucking water and not priming?

[earnie]

I have hayward catridge filter pump system.
The motor kicks on and runs I can heard the sound but its not sucking water to the filter.
The water level is good and no debris in the skimmer basket.

After googling i thought the Impeller was stuck with debris, but it moves spin easily with my hand. I took a screw driver and still try to clean if something is stuck, but nothing.
Do i have to remove the motor and see for debris? or just replace the impeller or the ceramic drive shaft? or something else is going on.
please suggest?

 

[duraleigh]

Most likely is that You have a suction side air leak. Somewhere between the pump and the skimmer(s), air is being sucked into the system. Find that leak and your issues will be solved.

 

[earnie]

thanks how do i search for the air leak? since i don't see any bubbles in the skimmer

 

[4knights]

First thing I would check is water level in skimmer, then ALL your unions from suction(main drain/skimmer) piping and you pump basket lid o ring. If you took them apart for the winter and forgot to lube them you could be sucking air.

 

[earnie]

ok removed the pump and the Impeller just fall out from the motor

 

[earnie]

my seal is stuck on the motor no wonder impeller just fall of, can i remove the seal without opening the back of motor?