Turn guard as necessary to align nailhole in bushing (5) with hole in stem (11).
Insert new nail through holes.
Unscrew and remove valve assembly from piping.
Remove nut (1, figure 4-38), guard (2) and nail (4).
Push down on stem (11), forcing piston (9) out through bottom of valve body (12).
Grasp piston end of stem (11) and pull stem, with attached parts, from valve body (12).
Remove nut (3), bushing (5) and cushion (6) from stem (11).
Remove cotter pin (7), washer (8), piston (9) and ring (10) from stem (11).
Use new piston (9), cushion (6), bushing (5) and nuts (1, 3) when assembling valve.
Install cushion (6) and bushing (5) on stem (11).
Insert stem through bottom of valve body (12). Grasp threaded end of stem as it appears through top of body,
then pull stem up until the bushing (5) and cushion (6) are seated inside valve body. Push stem (11) back out of
Install ring (10), piston (9), washer (8) and cotter pin (7) on stem (11).
Position stem so that nail hole is oriented to bushing (5) nail hole, then install stem into valve body (12). When
nail holes are in line, install nail (4).
Screw a new nut (3) onto stem (11) so that it stops just above the top of bushing (5).
Assemble the guard (2) to stem, positioning the opening in guard at nail location, and install nut (1).
Screw the assembled valve onto piping.
4-15.2 Discharge Ball Valve. (Figure 4-39)
Loosen screw (2) and remove handle (1) from stem (10).
Remove dust cover (3), retainer (4) and stop plate (5).
Remove screws (6), end adapter (7) and o-ring (8).