Disassemble
Disassemble
Disassemble the
the
the Isolation
Isolation
Isolation Valve
Valve
Valve
Components
Components
Components
Use this procedure to disassemble the air cylinder
(227), block mount (224), connecting rods (225),
shuttle housing (218), and base housing (201).
1.
Prepare the isolation system for service. See
Prepare the Isolation System for Service, page
89
2.
Remove the isolation valve from the cabinet. See
Remove the Isolation Valve from the Cabinet,
page 90
.
3.
Disconnect the two connecting rods (225) from
the base housing (201):
a.
Grip the flats of a connecting rod with an
adjustable wrench. On the opposing side of
the base housing, use an adjustable wrench
to remove the screw (233), lock washer
(237), and flat washer (232).
b.
Remove the second connecting rod from the
base housing.
Figure 35 Rods Near the Base Housing
4.
Slide the entire base housing (201) off of the
connecting rods.
5.
Disconnect the two connecting rods (225) from
the block mount (224):
a.
Grip the flats of a connecting rod with an
adjustable wrench. On the other side of the
block mount, use an adjustable wrench to
remove the screw (233), lock washer (237),
and washer (232). Pull the connecting rod
out through the shuttle housing (218).
b.
Remove the second connecting rod from the
block mount.
6.
Replace the two shuttle bearings (223) in the
shuttle housing (218).
a.
Remove the o-ring (231) on the underside of
the shuttle housing and pull the bearing out
through the top.
b.
Insert a new shuttle bearing (223) into the
shuttle housing through the top, with the
o-ring groove pointing down, away from the
air cylinder (227). Slide a new o-ring (231)
into the groove to hold the shuttle bearing in
place.
c.
Remove and replace the second shuttle
bearing (223).
7.
Disconnect the shuttle housing (218) assembly
from the air cylinder (227):
a.
Locate the flat section on the air cylinder
shaft and the flat on the collar.
b.
Grip each flat section with an adjustable
wrench and turn in opposing directions to
loosen the air cylinder shaft.
Note
Be careful not to scratch the air
cylinder rod when extracting and
handling.
c.
Turn the cylinder rod until the shuttle housing
(218) assembly is removed.
8.
Disassemble the shuttle housing (218) assembly.
a.
Use an adjustable wrench to loosen, and
then remove, the retaining nut (235).
b.
Separate the retaining nut (235) and the
coupler (234).
c.
Remove the wave washer (236) from inside
the shuttle housing (218).
Figure 36 Shuttle Housing Components
3A8493A
93
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