hydraulic jacks quest.
My MH has Kwikee hyd. leveling jacks. Recently, one of the rear jacks has begun to slowly extend while driving. When the 'jacks down' alarm sounds, I simply hit the up button, it retracts and then all...
Forum Discussion
gatorcq wrote:
why not do a watch and wait. How far will it really come down? That will determine the work, needed.
As for valve, if there is no pressure (pump is turned off) in the lines then really, with the valve cause the jack to extend?
To really learn how the system works - light reading material
http://www.rvtechlibrary.com/chassis/HydraulicsandHWHSystems.pdf
There is a BIG difference between HWH systems and the Kwikee system he has. YOU need to understand Power up and Power Down. It takes static hydraulic pressure to keep the cylinder retracted and to keep it extended. When there is a LOSS of pressure, the jack will either extend or retract depending on where it started. Loss of pressure happens when a solenoid valve allows fluid to seep between the 2 solenoids. That causes a loss of pressure to keep retracted. Doug
