Patent ID: 7954318

Claim:
A hydraulic system, comprising: an actuator; a coupling in fluid communication with said actuator through a first conduit; a first solenoid valve operably associated with said actuator and said coupling and located along said first fluid conduit in between said actuator and said coupling, wherein said first solenoid is operable to control pressure applied to said coupling; a second fluid conduit in fluid communication with said first fluid conduit; a second solenoid valve in fluid communication with said second fluid conduit and operably associated with said actuator and said first solenoid, wherein said second solenoid is operable to relieve pressure; and a third fluid conduit in fluid communication with said second solenoid valve and a reservoir such that said second solenoid valve is operable to allow air to flow from said first fluid conduit and said second fluid conduit through said third fluid conduit and into said reservoir, purging said air from said hydraulic system.