Leveling Jacks wavering, slide-out stuck: Hydraulic issue?
I have a 2004 Georgetown, and over the last few weeks, I noticed the leveling jacks don't seem to keep the rig level anymore. For one thing, we keep hearing cracking noises coming from under the rig, and after a couple of days, the rig is no longer level. Seems to tell me jacks aren't keeping the pressure. I checked the hydraulic pump, and there doesn't seem to be any leak in that area. There is no oil dripping from any of the jacks either.
Yesterday after coming back home for the summer, I couldn't get the bedroom slide-out to come out. The dinette slides out fine, but the bed won't.
My question is: could there be a oil level issue? How does one know if there is enough oil in the system, or how are those hydraulic systems troubleshot anyway?