Apparatus for controlling selectively engageable detents in a pilot controller

摘要

A pilot hydraulic system (10) controller including a pilot controller valve (20) for controlling the flow of hydraulic fluid to actuate a primary hydraulic system valve, a pilot controller lockout valve (40), and a detent control circuit (52) for selectively energizing a detent solenoid coil (64) connected to the pilot controller valve (20), the detent control circuit (50) include a switch means (52,54) for selectively disabling the detent solenoid (64) coil when the pilot controller lockout valve (40) is actuated to hydraulically disable the pilot controller (10), so as to prevent the detent solenoid coil (64) from acting upon the pilot controller valve (20) when the pilot controller (10) is hydraulically disabled.