There is not a dealer around me to take this to so I need some help. My backhoe started leaking fluid at the bucket cylinder. It's not a hose but I think at the cap plug where the hose attaches. Do the caps unscrew? I don't want to put a wrench on it if they do not and make it worse. I suspect it's a ring that needs replaced in there. I'm not familiar with these things at all.