Service
Service
Service and
and
and Reassemble
Reassemble
Reassemble the
the
the Top
Top
Top Housing
Housing
Housing
of
of
of the
the
the Isolation
Isolation
Isolation Valve
Valve
Valve
Use this procedure to replace the seals in the
top piston housing. This procedure also covers
reassembling the top piston housing.
1.
Disassemble the bottom housing of
the isolation valve as described in
Service the Bottom Piston Housing, page 97
.
Remove the piston and spring.
2.
Unscrew and remove the top housing piston cap
(210). The housing includes a U-cup (203) and
an o-ring (208).
3.
Replace the o-ring (208) and U-cup (203):
a.
Replace the o-ring (208) into the groove next
to the threads.
b.
Replace the U-cup (203) where it sinks into
place. The U-cup faces outwards in the cap.
4.
Remove the U-cup spacer (206) and the packing
U-cup (204).
5.
Replace the U-cup spacer (206) and the packing
U-cup (204):
a.
On the smaller side of the U-cup spacer
(206) is a recessed groove that helps align
the packing U-cup (204). Snap or set the
packing U-cup (204) into the groove on the
U-cup spacer (206).
b.
Grease around the lip of the seal (204) and
pop it, seal side first, into the housing (201).
6.
In the cap (210), apply grease to the o-ring (208)
and U-cup (204).
7.
Screw the cap (210) into the housing and tighten
by hand.
8.
To complete reassembly, see
Bottom Housing of the Isolation Valve, page 100
.
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