Remove the check valve (Item 1)[Figure 20-41-35].
Installation: Tighten the valve to 20 ft.-lbs. (27 Nm) torque.
Remove the O-rings (Item 1) and back-up ring (Item 2) [Figure 20-41-36].
Install new O-rings (Item 1) and back-up ring (Item 2) [Figure 20-41-36] on the check valve.
Check valve (Item 3) [Figure 20-41-36] has a rating of 5-10 PSI.
Clean and inspect the screen (Item 1) [Figure 20-41-37] on the end of the valve.
Reverse the removal procedure to install the BICSTMcheck valve.
