TM 10-4330-234-13&P
4-19. Automatic Drain Valve (cont).
b. Repair. (figure 4-14)
(1)
Unscrew and remove straight adapter (1) from cover (2).
(2)
Remove eight bolts (3) and cover (2).
(3)
Remove two pipe plugs (4) from cover (2).
(4)
Remove cover and unscrew bearing (5).
(5)
Remove spring (6), stem nut (7), diaphragm washer (8), diaphragm (9), disc retainer (10), and disc
(11).
(6)
Remove three spacer washers (12), and one guide disc (13).
(7)
Remove stem (14), seat (15).
(8)
Remove pipe plug (16) from body (17).
(9)
Remove elbow (18) and pipe bushings (19) from body (17).
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).
(10) Clean al items, except packing, with drycleaning solvent and dry thoroughly.
(11) Inspect and replace all items that are worn or otherwise damaged.
NOTE
When installing, coat all pipe and fitting threads with sealing
compound.
(12)
Install pipe bushings (19) and elbow (18) on body (17).
(13)
Install pipe plugs (16) on body (17).
(14)
Install seat (15) and stem nut (14).
(15)
Install guide disc (13) and three spacer washers (12).
NOTE
To tighten stem nut, it may be necessary to remove diaphragm assembly.
(16)
Install disc (11), disc retainer (10), diaphragm (9) diaphragm washer (8) and stem nut (7).
(17)
Install spring (6) and then install bearing (5) into cover.
(18)
Install two pipe plugs (4) onto cover (2).
(19)
Install cover (2) on body (17) and secure with eight bolts (3).
(20)
Install straight adapter (1) onto cover (2).
4-24
