NHIrish wrote:
Could also be a bypass leak in a piston....in other words, no exterior leak but the pressure leaks down internally.
The problem is figuring out the leak is...check with the system manufacturer or rv manufacturer for troubleshooting recommendations.
I found that many rv mechanics have no clue about hydraulics, so find a good independent!
My personal observation would be to take it to a agricultral implement dealer. They know hydraulics, they deal with them everyday and hydraulics are hydraulics whether it's a motor home or a dump truck or a hydraulically actuated farm implement. All the same principles at work