TM 5-4220-227-14
5-10. Ball Valve 3/4 Inch (Pressure Relief Valve Assembly) (Cont).
b. Repair. (figure 5-7)
(1) Remove ball valve, see para. a. above.
(2) Remove lever nut (1) and remove handle (2).
(3) Remove stem gland screw (3), packing (4), stem (5) and thrust seal washer (6) from body (7).
(4) Remove retainer (8), two teflon seats (9) and ball (10) from body (7).
(5) Clean all components using nonionic detergent cleaner and rinse with clean distilled water.
(6) Inspect all components, replace all components that are bent, cracked, worn or otherwise damaged.
(7) Install two teflon seats (9), ball (10) and retainer (8) in body (7).
(8) Install thrust seal washer (6), stem (5), packing (4) and stem gland screw (3) into body (7).
(9) Install handle (2) and secure with lever nut (1).
FOLLOW-ON MAINTENANCE
Install pressure relief valve (para. 5-9).
5-18
