JD 48 Backhoe slowly leaking fluid out of top port on valve

[Robertpower3]

New to the site and hydraulics in general so thanks in advance for your patience. I have a John Deere 5105 with a 522 front end loader and a JD 48 backhoe. My backhoe is leaking hydraulic fluid slowly from one of the top ports on the valve section and I'm having difficulty figuring out which parts I need to inspect based on the diagram so I pulled off of John Deere's website. I believe the leak is related to pressure relief valve on the boom-dipper stick valve. I'm attaching pics to hopefully help with the ID. Thanks

 

[Robertpower3]

 

[Roadworthy]

You can try tightening all connectors. Then degrease and clean everything well. When it's dry dust on a bit of talcum powder. That will help pin down the actual leak location.

 

[wdchyd]

Looks like a work port relief cover, should be just a male boss oring. If it’s coming from between sections you’ll be looking at a tear down and reseal complete valve.