Hi, looking for advice on where to start checking why the hydraulic lift cylinder on my tractor plow keeps getting air in it. The cylinder doesn't appear to leak any fluid and the hose looks good also with no leaks or cracks. The tractor itself has a very minor slow weeping type leak, barely wet usually, on a short rubber hose located between hard lines. Should I start with a new cylinder or check something else? I have no other attachments that use hydraulics so I can't check the system on anything else. Thank for any help you can offer
