Thank you George,
I have tried loosening the line and got fluid all over, but no joy. Here is the email to HWH service, maybe it sheds some light on the issue.
To whom it may concern,
The passenger rear jack is not retracting. The system was interrupted when the actuator housing broke due to the ram bearing surface coming off the tip of the ram. The ram could not reach the jack bearing, and broke the actuator housing.
Much fluid leaked out, and the tank for the hydraulic fluid ran empty.
I ordered a replacement actuator and installed it. After refilling the tank, I tried to operate the jacks
Driver front and rear are operating optimally. Passenger front is sluggish.
Passenger rear did not "kickdown", the actuator did not extend. The jack simply operated horizontally, and would not retract unless pressure was applied to the "foot". I pulled on the jack while the leveling system was engaged. As soon as the jack was at about 30 degrees, the actuator extended, and the jack went fully vertical.
In the process of leveling, I noticed the jack would only retract about 2 inches of the extended ram before stopping. The only way to resolve this is to open a fitting and let the fluid out, then the jack retracts.
I think the system has air in the lines. Please help me understand if there is air in the line, how to "bleed" off the 225 system, or what your recommendation is.