Kal2002
You should be able to visually determine if the brass sleeve/nut is stripped by looking at the spring. The nut should be tightened until the spring is compressed with the coils touching , but don't overtighten. Inspect the spring after operating the filter for a few minutes to see if the spring is still compressed. One more thing to check. When you assemble the spring, make sure you put the small hole washer on first, then the spring, next the larger hole washer and finally the sleeve nut. The part number for the sleeve nut is DEX2400JN. Part number for a generic replacement sleeve nut is V60-110.
There is a retrofit upgrade kit for the entire clamp assembly available for the swim clear cartridge models and the pro-grids DE models that use this same clamp, but they will not work with the super star-clear models. There may be a replacement clamp assembly part # HAY-051-1795-SSC search for this part number and give them a call to see if they have a replacement for it yet.
Here are a few less expensive things to try before you purchase a new filter.
Purchase a new OEM Hayward o-ring and some lube for the o-ring. Part # DEX2400K
Look for the Silicon based lube such as Jack's No 327 o-ring lube.
Carefully clean and inspect the filter head and the filter body where the o-ring seats.
Clean with a scrub pad to ensure a good tight seal of the o-ring. Look for small cracks or holes in this area.
Apply a small amount of lube around the o-ring.
Carefully assemble the filter head over the tank body.
Be sure not the pinch or tear the o-ring.
Install the clamp, spring and a new sleeve nut assembly. Tighten the 9/16 sleeve nut until the spring coils touch.
Open the air relief valve at the top of the filter. Turn on the pool pump. When all the air has been purged from the filter then close the air relief valve.
Hopefully this will keep the water inside your filter and inside your pool
Please let the forum know if this works. If you are forced to replace your filter, let us know which model you choose and why.