IOM-PGR-1
9
WARNING
SPRING UNDER COMPRESSION. Prior to re mov ing the
spring chamber, relieve spring com pres sion by back ing
out the adjusting screw. Fail ure to do so may result in
flying parts that could cause personal injury.
1. Loosen adjusting screw nut (60.11) one
revolution CCW. Relax range spring
(60.15) forces by rotating adjusting screw
(60.8) CCW until removed from spring
chamber (60.2).
2. Loosen spring chamber (60.2) by placing
wrench on “flats” and rotating CCW making
sure
not
to use the flat where the vent hole
is located.
3. Remove spring chamber (60.2), spring
(60.15) and spring button (60.5).
4. Remove the diaphragm subassembly con-
sist ing of the pressure plate nut (60.10),
lock wash er (60.9), pres sure plate (60.3),
diaphragm (60.12), push er plate seal
(60.13) and pusher plate (60.4).
5. Loosen pressure plate nut (60.10) and
separate all parts (60.3, 60.4, 60.9, 60.12
& 60.13) of the diaphragm subassembly.
6. Inspect pressure plate (60.3) to ensure no
de for ma tion due to over-pressurization. If
de formed, replace.
7. Clean all re us able metal parts according to
owner's pro ce dures.
8. Reassemble diaphragm subassembly by
plac ing pusher plate seal (60.13) over
thread ed post of pusher plate (60.4), plac-
ing diaphragm (60.12) and pressure plate
(60.3) over the threaded post. Assure the
pressure plate (60.3) is placed with curved
outer rim down next to the diaphragm
(60.12) surface. Place a thread sealant
compound on the threads of the push er
plate post (60.4). Apply 15 in-lbs torque
to tighten the nut.
9. Place spring (60.15) over the pusher plate
nut (60.10) of the diaphragm subassembly.
10. Place multipurpose, high temperature
grease into de pres sion of spring button
(60.5) where ad just ing screw (60.8) makes
contact. Set spring but ton (60.5) onto range
spring (60.15); en sure spring button is lay-
ing flat on top of spring.
11. Rotate the spring chamber (60.2) CW
by hand into the threaded portion of the
body (60.1) ensuring not to cross thread.
Continue ro tat ing CW until firmly seated
against the upper di a phragm. Tighten to
30-35 ft-lbs (41-47 N-m) torque value.
12. Reinstall ad just ing screw (60.8) with nut
(60.11) into the spring chamber (60.2).
13. Pressurize with air and spray liquid leak
de tec tor to test around body and spring
cham ber for leakage. En sure that an outlet
pressure is main tained during this leak test
of at least mid-range spring level; i.e. 20-80
psig (1.4-5.5 Barg) range spring, 50 psig
(3.4 Barg) test pres sure min i mum.
TRIM REPLACEMENT -
1. Secure stabilizer body (60.1) in a vise with
the body cap (60.6) oriented up and the
spring chamber (60.2) down wards.
CAUTION
To prevent damage to the body, use soft jaws when
securing body in a vise. Position body so that vise closes
over the inlet and the outlet connections.
2. Loosen and remove body cap (60.6).
3. Remove piston spring (60.7), and piston
(60.14). Note that the seat and piston guide
are in te gral parts of the body (60.1) cast ing.
Inspect integral seat and guide for ex ces sive
wear, espe cially at seat sur fac es. Replace if
worn, nicked or de pressed. If integral seat
is nicked, use seat lapping com pound to
remove.
NOTE:
Pis ton (60.14) assembly is a com-
po si tion seat, Cashco, Inc. does not recom-
mend at tempt ing to remove the com po si-
tion seat. If composition seat is damaged,
re place entire piston assembly.
4. Clean flat mating surfaces of body (60.1) to
body cap (60.6) shoulder. Be careful not to
scratch either surface.
5. Clean debris from within the body (60.1) cav-
ity. Parts to be reused should be cleaned
ac cord ing to own er's pro ce dures.
6. Slide the post end of the piston (60.14),
slowly into the body cavity.
7. Place piston spring (60.7) over spring hub
of the piston (60.14).
