Cashco 9540R P/P - Manual (Page 4)

IOM-9540R 4
Figure 2.8: VDI/VDE #3845
Positioner Mounting Bracket
7 RANGER
PREMIER
POSITIONER
SUB-ASSY.
Detail of Parts
23, 24, 27, 28, 32
3.2
GAUGE
BLOCK
17 19
78
26
79
77
76 13
18
4
28
27
32
24
23
17
78
79
32
26
77 76 13
18
4
7 RANGER
PREMIER 3.2
POSITIONER
SUB-ASSY.
MODEL 48 ACTUATORS
MODEL 148, 148X
ACTUATORS
#148 Actuator: (See Figure 3)
a. Turn actuator handwheel (58) CW to re-
move stem windup torque. The linkage
from the actuator stem (9) will become
slack. May require 1-3 revolutions. This
will ease removal of cover plate (13).
b. Remove four cap screws (34), two cap
screws (31), dial lens (14), travel indicator
dial (15), cap screw (32), travel indicator
(16), lock washer (55) and pin (51).
c. Remove cover plate (13) carefully, prying
out with a screwdriver or similar instru-
ment. Shaft-end bearing (18) may slide
out when cover plate (13) is removed;
otherwise, remove bearing (18).
d. Remove indicator spacer (17).
e. Discard removed dial lens (14), travel
indicator dial (15), coverplate (13), two
cap screws (31), travel indicator (16), cap
screw (32), indicator spacer (17), pin (51)
and washer (55). Save only four cap
screws (34) for re-use.
f. Position the spacer (17) over the valve
stem (7 Ranger, 3.2 Premier) end, ori-
ented as shown in Figure 2.5.
g. Put Locktite #242 thread locking sealant,
or equal, onto the setscrew ( 77). Engage
the setscrew (77) into the tapped end of
the spacer (17), until the setscrew (77) is
projecting out of the spacer (17) 3/16"–
1/4" (5–6 mm).
h. Position bearing (18) over the spacer (17)
and push fully inwards.
i. Position cover plate (13) over bearing
(18) ensuring that cover plate (13) gets
properly centered and shouldered within
the arm housing (4). Align the four bolt
holes within the arm housing (4). Engage
the cap screws (34) to secure the cover
plate (13) to the arm housing (4), tighten-
ing cap screws (34) evenly. NOTE
: It may
be necessary to rotate the actuator
manual handwheel operator (58) down-
wards, or alternately supply a small level
of air pressure (5-7 psig), (0.35-0.50
Barg) to assist in properly shouldering the
cover plate (13) within the arm housing (4).
5. Rotate handwheel operator (58) until slack, or
release all air pressure from the actuator.
6. Position mounting bracket (76) onto the
positioner base plate (26) and secure with
Figure 3