IOM-PGR-2
7
8. Reassemble diaphragm subassembly by
plac ing pusher plate seal (60.13) over
thread ed post of pusher plate (60.4), placing
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 (60.10).
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 laying 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.
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).
8. Apply pipe thread sealant to the body cap
(60.6) threads. Thread body cap into body.
When body cap is fully down against body
at the body cap shoulder, impact the body
cap into the body tight.
NOTE:
When unit is
put into service and pressurized, these two
parts seal metal-to-metal with no gasket.
9. Bench test unit for suitable operation.
NOTE:
Regulators are not tight shutoff de-
vices. Even if pressure builds up beyond set
point, a reg u la tor may or may not develop
bubble tight shutoff. In general, tighter shut-
off can be expected with composition seat.
10. Pressurize with air and spray liquid leak
de tec tor to test around body cap (60.6)
and body (60.1) for leak age. Test pres sure
should be a mini mum of 100 psig (6.9 Barg)
at the inlet.
11. Remove body from vise, rotate down side up
and secure body in vise with body cap down.
12. 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 push er plate post (60.4).
Apply 15 in-lbs. torque to tighten the nut.
13. Place spring (60.15) over the pusher plate
nut (60.10) of the diaphragm subassembly.
14. Place multipurpose, high temperature
grease into de pres sion of spring button
(60.5) where ad just ing screw (60.8) makes
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.
3. Remove piston spring (60.17), 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.
