TM 5-4220-227-14
(8)
Inspect bonnet (1) and body (4) and replace if threads are stripped, or bonnet (1) or body (4) is cracked or
otherwise damaged.
(9)
Inspect valve stem (5) and replace if threads are stripped or valve stem (5) is worn or bent.
(10)
Inspect seat (6) and replace if sealing surfaces are pitted, corroded or seat is worn, cracked, or otherwise
damaged.
(11)
Inspect acorn nut (13), lockwasher (14), and handle (15) and replace if threads are stripped, or lockwasher (14)
and handle (15) are cracked or otherwise damaged.
(12)
Install new stem seal (11) and seal retainer (10) in bonnet (1).
(13)
Install nut (12) and guide assembly (9) on valve stem (5) and tighten nut (12).
(14)
Install valve stem (5) in bonnet (1) and secure with gland nut (8).
(15)
Install seat (6) in bonnet (1). Ensure seat (6) is seated fully in bonnet (1).
(16)
Install new preformed packing (7) in body (4).
(17)
Install backup (2) and new preformed packing (3) on bonnet (1).
NOTE
Bonnet has left hand threads.
(18)
Install bonnet (1) in body (4) and tighten securely.
FOLLOW-ON MAINTENANCE
Install shutoff valve (para. 5-33).
6-97
