if its hydraulic, and has two room cylinders, its either the retract solenoid or the sync cylinder leaking internally.
if its a single cylinder, its either the retract solenoid or the room cylinder equalizing internally. i would suspect the solenoid first. make sure its closed.
only real quick way is to use a pressure gauge inline on retract side. if it goes down, its the solenoid. if it goes up, its the cylinder.
if you need help, call me at 602 549 3638. if i dont answer, leave a message and a number. i will call back asap.
paul Maddox
i work full time for hwh corp. i do not sell parts or solicit service work on this forum.
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