OK LOL. I went back rechecked all possible causes checked hoses and fittings even took pressure readings all ok. after a few more calls to JLG. the guy (Alan) started reading from the book. it says to cycle all functions completely lift, steering 1 time and then check fluid level. it states fluid should never be in the upper (full) sight plug. and should only be half in the lower sight plug (add).
goes against everthing you have ever been taught. So going by that someone at the school added fluid. no one admits to it.Lol per Alan cause he had no reason for this just starting to happen after years of service. He also didn't like being questioned. LOL nut damm*t i would like to have found out more of a reason than that. So in the end when your JLG is in the add bubble leave it alone and made sure all functions work.??? no need for sight glasses. Heck just remove them and add plugs. sorry just venting alittle