TM 9-4110-255-14
5-21. ISOLATION VALVES REPLACEMENT. - Continued
b. Installation.
NOTE
Isolation valve flare connections are different sizes. Be sure to observe location noted during
removal.
(1) Install two new teflon seals (4) and isolation valves (3). Be sure valves are turned toward copper tubing (2)
and tighten to between 50 and 60 ft lb (68 Nm and 82 Nm).
(2) Aline copper tubing (2) and connect two flare nuts (1) to isolation valves (3).
(3) Remove two isolation valve caps (5) and be sure isolation valves (3) are open. Install two isolation valve
caps.
NOTE
FOLLOW-ON MAINTENANCE:
Replace dehydrator (para 5-17).
Leak check (para 5-13), evacuate (para 5-14), and charge (para 5-15) the refrigeration system.
Close right side door.
5-40
