TM 10-4320-303-13
NOTE
If new disc is installed, a different number of spacers may be required to
obtain right amount of grip on disc.
d. Install valve stem (5) in disc guide (12).
CAUTION
When installing stem nut, tighten nut until diaphragm cannot be twisted. If
nut is loose, diaphragm could pull loose and tear under pressure.
When tightened, make sure disc is not compressed too much. Disc should
be compressed only very slightly by disc guide. If needed, remove or insert
enough spacers to obtain proper disc compression.
e. Install stem nut (6). Tighten stem nut (6).
f. Align holes in diaphragm (8) with studs in valve body (3). Stretch diaphragm (8) over studs in valve
body (3).
g. Install spring (4) over valve stem (5).
CAUTION
When installing cover, make sure diaphragm is lying smooth under cover. If
diaphragm is not smooth, valve will not work properly.
h. Align holes in cover (2) with studs in valve body (3). Carefully install cover (2) over studs on valve
body (3).
i. Install twelve hex nuts (1) on studs of valve body (4).
5-9
