172-65584MA-04 (J3S-X-RV) 5 Oct 2021
13
Detaching/Reattaching the Regulation Valve Unit
Part
During Disassembly
During Reassembly
Figure B
Regulation
Valve Unit*
Remove with a
spanner
(use spanner only on
Gland Case section)
See "NOTE when assembling
the unit" described below;
consult the table of tightening
torques and tighten to the
proper torque
Gland Case
Gasket
and clean sealing
surfaces
Replace with a new gasket;
coat surfaces with anti-seize
*The regulation valve unit cannot be disassembled It can only be
detached/reattached as a unit.
NOTE: When assembling the unit:
When installing the regulation valve unit in the cover,
make sure that the zero points of the aperture indicator
and the aperture indication plate are aligned. If the zero
points do not match up, they must be realigned.
Refer to the following steps for aligning the zero points:
1. Turn the regulation valve of the regulation valve unit counterclockwise and
pull it up.
2. Loosen the locknut of the regulation valve.
3. Install the gland case gasket and the regulation valve unit in the cover (refer
to the “Table of Tightening Torques”).
4. Turn the regulation valve clockwise to close using the appropriate tool.
5. Turn the aperture indicator portion of the regulation valve unit until its point
is aligned with the “0%” marking on the aperture indication plate. Once it is
aligned with the marking, tighten the locknut.
Disassembly/Reassembly of Components Inside the Body
Part
During Disassembly
During Reassembly
Figure C
Float Cover
& Screen
Lift straight up and out
while rocking slowly
Align the arrows on the float
cover/screen and the body,
insert with the tab on the
bottom fitting into the slot in the
body; make sure the screen
does not stick out out of the
body (Figure C)
Float
Remove, being careful
not to scratch the
surface
Insert, being careful not to
scratch the surface
Orifice Plug
Remove with a socket
wrench
Consult the table of tightening
torques and tighten to the
proper torque
Orifice Plug
Gasket
Remove the gasket
and clean sealing
surfaces
Replace with a new gasket;
coat surfaces with anti-seize
Orifice
Remove with a socket
wrench
Consult the table of tightening
torques and tighten to the
proper torque
Orifice Gasket Remove the gasket
and clean sealing
surfaces
Replace with a new gasket;
coat surfaces with anti-seize
Regulation
Valve Unit
Locknut
Gland Case
Gasket
Arrow on the
Float Cover
Tab