TM 5-4220-227-14
5-43. Ball Valves 1 Inch (Air Supply Manifold) (Cont).
(4)
Install two valves (4), fitting (3), tee (2), and two fittings (1).
(5)
Pressurize system and check for leaks.
b. Repair. (figure 5-67)
NOTE
There are two ball valves. The repair of each valve is the same.
(1)
Remove ball valves (para. a. above).
(2)
Remove nut (1) and lever and grip (2).
(3)
Remove gland nut (3), stem bearing (4), stem (5) and stem packing (6). Discard packing.
(4)
Remove retainer (7), ball seat (8), valve ball (9) and ball seat (10) from valve body (11). Discard ball seats.
(5)
Clean all components using nonionic detergent cleaner and rinse with clear distilled water.
(6)
Inspect all items and replace all items that are bent, cracked, worn or otherwise damaged.
(7) Install ball seat (10), valve ball (9), ball seat (8) in valve body (11) and secure with retainer (7).
(8)
Install stem packing (6) on valve body (11).
(9)
Install stem (5) and stem bearing (4) and secure with gland nut (3).
(10)
Install lever and grip (2) on stem (5) and secure with nut (1).
(11)
Install ball valve (para. a. above).
5-152
