Auto Air Relief Valve

[freeze]

Need help from the expert! I got a leaking Hayward AAR after filter cleaning. What can I do to fix it? The value is about 10yr old but it was OK before the filter cleaning (opening and closing of filter body), can the moving of the filter body causing AAR to leak?
Thanks for any advice

 

[Bama Rambler]

I'd say just replace it. It's possible that some trash got in it during the cleaning and you could try cleaning it but I'm not sure that's going to work.