172-65165MA-05 (HR80A) 13 Sep 2021
8
Disassembly/Reassembly
When disassembling or removing the product, wait until the internal
pressure equals atmospheric pressure and the surface of the product has
cooled to room temperature.
Disassembling or removing the product when it is
hot or under pressure may lead to discharge of fluids, causing burns, other
injuries or damage.
Use the following procedures to remove components. Use the same procedures in
reverse to reassemble. (Installation, inspection, maintenance, repairs, disassembly,
adjustment and valve opening/closing should be carried out only by trained
maintenance personnel.)
Removing/Reattaching the Cap
Part
During Disassembly
During Reassembly
Set Screw
with Washer
13
Turn by screwdriver Be careful not to damage the head
Cap 12
Lift the cap up and off
—
Cover Bolt
10
Remove with a
socket wrench;
loosen the bolts
little by little in an
alternating criss-
cross pattern
Consult the table of tightening
torques and tighten to the proper
torque; tighten the bolts little by little
in an alternating criss-cross pattern
until the gap between the body and
the cover closes; be sure to coat the
threads of the bolt with ant-seize
Cover 2
Lift up and off
Make sure there are no pieces of the
old gasket left on the sealing surfaces
Disassembly/Reassembly of Components Inside the Body
Part
During Disassembly
During Reassembly
Disc 4
Remove, being
careful not to scratch
the lapped surface
Make sure that the seat surface
(lapped side with groove) is facing
down, toward the valve seat
Disc
Holder
Ring 6
Remove without
bending
Set on the air vent ring and make
sure that it does not sit on the valve
seat surface
Air Vent
Ring 5
Remove without
bending, as it will
not return to its
proper shape
Reinsert without bending
Module
Gasket 7
Remove the gasket Replace with a new gasket
Module
Valve
Seat 3 &
Guide Pin
14
Remove, being
careful not to scratch
the gasket sealing
surface; in the case
that the guide pin
becomes loose from
the module valve seat
during disassembly,
remove the guide pin
from the body
Make sure there are no pieces of
the old gasket left on the sealing
surfaces; insert the guide pin into
the hole on the body and reattach; if
the guide pin came loose from the
module valve seat, insert it into the
hole in the module valve seat before
attaching to the body
Module
Gasket 7
Remove the gasket Replace with a new gasket
Screen 9 Remove without
bending
Reinsert without bending
Module
Gasket 8
Remove the gasket Replace with a new gasket; make
sure there are no pieces of the old
gasket left on the sealing surfaces
of the body
CAUTION
13
12
10
2
1
6
7
14
8
1
9
7
3
5
4
