OM−05850
G-R
MAINTENANCE & REPAIR
PAGE E − 6
capscrew into the threaded hole in the plunger and
use the capscrew to hold the plunger in position
while seating the diaphragm around the plunger
head and installing the upper valve body (4).
Use a medium-sized flat head screwdriver or other
suitable tool to tuck the diaphragm into position
around the plunger head.
Use caution
not to nick
or damage the diaphragm.
Position the upper valve body over the lower valve
body, making sure both diaphragms are squarely
seated in the grooves in the lower valve body. Se-
cure the upper and lower valve bodies with the pre-
viously removed hardware (3 and 7). Torque the
capsccrews (3) to 10 ft. lbs. (120 in. lbs. or 1,4 m.
kg.). Remove the capscrew used to hold the plung-
er in place for reassembly.
Install the O-ring (10) in the groove in the adjust-
able restrictor (9). Invert the Air Release Valve and
screw the adjustable restrictor into the hole in the
lower valve body until the inboard end of the re-
strictor is
just flush
with the bore inside the lower
valve body.
Install the cotter pin (8) through the holes in the
lower valve body and through the castelation in the
adjustable restrictor. Bend the ends of the cotter
pin over to hold it in place.
Hold the Air Release Valve at approximatley a 60
_
degree angle from horizontal with the opening for
the pipe plug (1) facing up. Pour 6.5 ounces (192
ml) of propylene glycol (commercially available as
Sierra Anti-Freeze/Coolant") into the Air Release
Valve.
Screw the orifice (2) into the upper valve body until
fully seated.
Do not
over-tighten. No pipe sealant is
required.
Install the pipe plug (1)
hand tight only
. Turn the
Air Release Valve upside-down and rotate in vari-
ous positions to remove trapped air from the valve
body.
Hold the Air Release Valve at approximatley a 60
_
degree angle from horizontal, remove the pipe
plug (1) and re-check fluid level. The fluid level
should be close to the top of the opening for the
pipe plug. Add more fluid as required.
