Remove the lock valves (Item 1)[Figure 20-41-38], [Figure 20-41-39] & [Figure 20-41-40] from the BICS] valve.
Installation: Tighten the lock valves to 25 ft.-lbs. (34 Nm) torque.
Remove the O-rings (Item 1) and back-up rings (Item 2) [Figure 20-41-41] from both the tilt and lift lock valves.
Install new O-rings (Item 1) and back-up rings (Item 2) [Figure 20-41-41] on the tilt and lift lock valves.
Reverse the removal procedure to install the lock valve.
