Al,
I think you might be right. What I am struggling with is getting that impeller off as it spins both ways. I don't see the flat on the back end of the motor shaft you are referring to. Do I have to take something else apart?
I attached a link to the schematic of my pump as reference. One thing I did notice, is that when I took off the locking nut, I did not notice and o-ring or difuser (items 7 and 9 on the schematic). Not sure if they could have come off previously and I didn't notcie or do they come off when you take off the impeller (which is what I am currently struggling with.
Your continued help is greatly appreciated. I really don't want to pay a pool guy $100 bucks for a 10 minute fix.
Thanks
Mark

http://www.a1poolparts.com/-strse-17...ent/Detail.bok