LOWER WINCH PILOT VALVE
This task covers:
Bridge is in a position to be lifted.
On the lower winch, unscrew the cap (2). This will expose a hexagon socket grub
While in BRIDGE LIFT mode on the chest pack move the right hand joystick slowly
forward until the winch tries to lift the bridge.
The bridge may start to lift and then stall.
While the chest pack operator holds the right hand joystick forward, release the lock
nut on the grub screw and slowly rotate the grub screw anti-clockwise.
Keep rotating the grub screw anti-clockwise until the bridge starts to move upward.
Once bridge starts to lift, stop rotating the grub screw anti-clockwise.
Hold the grub screw steady and tighten the lock nut.
Replace the cap (2) and continue operations.
Once the launcher is returned to base, the complete pilot valve assembly (1) will