TM 10 4330-234-13&P
4-18. Manual Drain/isolation Valve Lines and Fittings (cont).
b. Repair. (figure 4-12)
NOTE
Manual drain valve and isolation valve are repaired the same.
(1) Remove nut (1), washer (2) and hand wheel (3).
(2) Remove packing nut (4), follower gland (5) and bonnet (6).
(3) Remove valve stem (8) and disc (9) from bonnet (6), then remove packing (7) and discard.
WARNING
Drycleaning solvent PD-680 used to clean parts is potentially
dangerous to personnel and property. Avoid repeated and
prolonged skin contact. Do not use near open flame or
excessive heat. Flash point of solvent is 100 - 138 (38 -
F
600C).
(4) Clean all items, except packing (7), with dry cleaning solvent.
(5) Inspect all items and replace packing.
(6) Install valve stem (8) and disc (9) into bonnet (6).
(7) Install follower gland (5) and packing nut (4) onto bonnet (6).
(8) Install bonnet (6) into body (10).
(9) Install hand wheel (3), washer (2) and nut (1).
4-20
