Cashco Premier - Manual (Page 14)

IOM-148 14
tially a complete actuator (AA) disassembly.
It is rec om mend ed that the range spring (11)
re place ment should include:
a. diaphragm (6) replacement
b. O-ring(s) (62) (63) replacement
c. threadseal (61) replacement.
2. Separate the actuator assembly (AA) from
the body assembly (BA) as described in this
Sec tion, V.B.1 through V.B.10.
3. Push piston (3) downwards by:
a. manual handwheel operator (MHWO)
being rotated CW (viewed from above
handwheel (58.1)) approximately one-half
of full travel.
b. pressurize actuator to approximately one-
half of the stated benchset range; i.e. for
6-26 psig (0.41-1.79 Barg) pressurize to
approximately 16 psig (1.1 Barg).
8. Remove all range springs (11) and set in a row
side-by-side. Inspect for any difference in the
spring (11) height or verticality. Replace any
abnormal spring(s) (11). Re place any springs
(11) that show cracks, nicks, damaged epoxy
coating, corrosion, etc. Inspect springs (11)
using data in table below as the “normal”:
WARNING
9. Inspect clevis (7), upper R.H. rod end (8), clevis
pin (48) and retaining ring (49) for signs of loose-
ness and/or wear; replace any worn parts. Check
bolting (26) (47) for loose ness; tighten as neces-
sary to 15-18 ft-lbs (20-23 N-m).
Number of revolutions of push
rod (10) required to disengage
from upper R.H. rod end (8). ______________
10. Place range springs (11) back onto hubs of
lower casing (2) per following table:
NOTE: Every spring (11) has another spring (11) 180°
across/opposite.
Figure 12
Piston & Clevis Close-up
1
52
3
7
8
10
25
56
48
49
Part Number
Benchset
Range
Qty. of
Springs
Free
Height*
in.
Coating
Color
psig (Barg)
830-H2-5-R9066-95
5-13 (0.34-0.90) 4
7.75 Black 7.5-19.5 (0.52-1.34) 6
10-26 (0.69-1.79) 8
* Acceptable ± 1/8” (±3 mm)
Do NOT stick hand or fi ngers into the arm housing (4)
when the actuator is pressurized. ONLY USE TOOLS
WITHIN ARM HOUSING (4).
4. Place a wrench on the hex surface of the
ac tu a tor’s stem/pushrod (10). Rotate the push
rod (10) CCW (viewed from lower L.H. rod
end (9)); keep track of number of revolutions
to disengage from upper R.H. rod end (8) in
box below.
5. Allow piston (3) to travel upwards by:
a. manual handwheel operator (MHWO)
being rotated CCW (viewed from above
handwheel (58.1)) fully out/up.
b. releasing air pressure as applied per
3.b. above; remove the air supply from
ac tu a tor upper casing (1).
6. Orient actuator assembly (AA) with upper
casing (1) on top side. Disassemble the ac tu a-
tor assembly (AA) to the point of di a phragm
(6) replacement as described in this Section
V.E.1 through V.E.10.
7. Place a matchmark at fl ange of lower casing
(2) and correspondingly on piston (3). Lift
off piston (3) in a vertical direction to prevent
tipping range springs (11) over. Set piston
(3) on work surface upside down.