IOM-PGR-1
8
222 grease or equivalent into recessed area
of the spring button (30.5) and place on top of
the range spring. (Also lubricate the threads
of the adjusting screw lightly).
11. Engage threads of the adjusting screw (30.17)
into the spring chamber (30.2) three or four
revolutions and place the spring chamber over
the spring button and spring.
12. Align the match marks on the body and spring
chamber flanges.
NOTE:
Vent hole in the
spring chamber should be directly above the
sense port in the body.
13. Place flange bolts through holes in spring
chamber and body and engage nuts (30.21).
Tighten nuts evenly in a star crossing pattern.
Apply 15 - 18 ft-lbs. torque to finish tightening.
Secure the name plate (53) under one of the
flange bolts (30.19) above the "inlet" of the
pilot.
14. Rotate adjusting screw (30.17) CW into the
spring chamber (30.2) to where the nut (30.18)
comes in contact with the top of the spring
chamber. Pilot valve set pressure should
approach the set point prior to removal from
the piping installation. Retighten nut (30.18).
I. Mounting Pilot Valve to Main Valve:
1. Place the bolt holes for the mounting bracket
over the two longer bolts (23) installed through-
out the top of the cover dome (2). Engage
the final two nuts (24) and secure tight.
2, Re-install tubing and fittings that previously
connected the inlet filter to the stabilizer, the
cover dome to the metering valve and the
outlet of the metering valve to the outlet of
the body.
3. Re-connect the external sensing line to the
pilot valve sensing port.
J. Changing the filter element:
1. See Section IV.
WARNING
SYSTEM UNDER PRESSURE. Prior to per form ing any
maintenance, isolate the reg u la tor from the system and
relieve all pressure. Failure to do so could result in
personal injury.
Inlet Filter
2. Unscrew the filter cover from the body.
Remove old element and replace with new
element.
3. Screw cover on filter body and secure tight.
K. Disassembly of the Stabilizer:
1. Maintenance procedures hereinafter are
based upon re mov al of the stabilizer from
the pilot. Shut down system in accordance
Section VI.
2. Owner should refer to owner's procedures for
removal, handling, cleaning and disposal of
nonreusable parts, i.e. gaskets, etc.
3. Loosen fitting and remove tubing that con-
nect the inlet filter to the stabilizer. Remove
stabilizer from fittings that run between the
stabilizer and the pilot.
4. Secure stabilizer body (60.1) in a vise with
the spring chamber (60.2) oriented upwards
CAUTION
To prevent damage to body, use soft jaws when securing
the body in a vise. Position so that vise closes over the
inlet and the outlet connections.
ELEMENT
(INSIDE)
BODY
COVER
DIAPHRAGM REPLACEMENT -
