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Type 1051 & 1052 Styles H & J
sembly into the spring barrel (key 12). After first clean-
ing and then coating the set screw (key 75) with Loc-
tite 271 or equivalent thread-locking compound (key
77), secure the adjustor with the set screw (key 75).
b. Coat the tapered end of the diaphragm rod (key
10) and the threads of the cap screw (key 9) with
Lubriplate MAG-1 or equivalent lubricant (key 76).
Bolt the diaphragm plate (key 4) to the diaphragm
rod with the cap screw (key 9). Tighten the cap
screw to the torque value listed in table 7.
c. Be certain the travel stops (key 8) are located
as shown in figure 9.
d. Install the spring (key 11) into the spring barrel.
Install the diaphragm plate and diaphragm rod into
the actuator. Attach the hex nut (key 58), turn-
buckle (key 57), hex nut (key 16), and rod end
bearing (key 17) to the diaphragm rod.
e. Install the diaphragm (key 3).
f. Place the upper diaphragm casing (key 1) on the
lower diaphragm casing (key 2). If necessary, ro-
tate the lower bearing seat (key 73) so that the up-
per diaphragm casing travel stop will not contact
the diaphragm when the casing cap screws (key 5)
are tightened. Secure the upper diaphragm casing
with the cap screws and hex nuts (keys 5 and 6) in
a criss-cross pattern to the torques shown in table
7. Be sure the warning nameplate is in place on the
casing.
3. If the bearing (key 67) was removed, press in the
new bearing. The end of the bearing should be flush
with the outside of the mounting yoke or mounting
plate (key 22).
4. For an actuator with an H mounting adaptation and
a 7/8 through 1-1/2 inch (22.2 through 38.1 mm) out-
put shaft, install the output shaft (key 87) through the
mounting plate (key 22) and secure it with the retain-
ing ring (key 88). Then, attach the mounting plate and
output shaft assembly to the actuator housing (key 20)
with the cap screws (key 23). Tighten the cap screws
to the appropriate torque value listed in table 7.
5. For an actuator with an H mounting adaptation and
a 2-inch (50.8 mm) output shaft, refer to figure 12.
Install the output shaft (key 87) with attached coupling
(key 90) through the mounting plate (key 22) and se-
cure it with the retaining ring (key 88). Attach the
mounting plate and output shaft assembly to the ac-
tuator housing with the cap screws (key 23). Tighten
the cap screws to the appropriate torque value listed in
table 7.
6. For an actuator with a J mounting adaptation, refer
to figures 10 and 11. Install the output shaft (key 87)
with attached coupling (key 90) through the mounting
18
yoke (key 22) and secure it with the retaining ring (key
88). Attach the mounting yoke and output shaft as-
sembly to the actuator housing (key 20) with the cap
screws (key 23). Tighten the cap screws to the ap-
propriate torque value listed in table 7.
7. Apply Lubriplate MAG-1 or equivalent lubricant (key
76) to the output shaft splines. Then, align the lever
(key 27) and output shaft so that the marking that was
made in step 6 or 7 of the disassembly procedure is
oriented correctly. Slide the lever into place. When
installing the lever, align the bolt holes in the lever as
close as possible with the hole in the rod end bearing
(key 17). Temporarily rotate the lever and output shaft
until the rod end bearing no longer interferes with fur-
ther installation of the lever. Then, slide the lever as
far as it can go onto the output shaft.
8. Clamp the lever to the output shaft with the cap
screw (key 28). Tighten the cap screw to the torque
value listed in table 7.
9. For Type 1052 actuators, complete the Initial Com-
pression portion of the Adjustment section before pro-
ceeding.
10. Rotate the lever (key 27) to align with the rod end
bearing (key 17). This connection can be aided by
stroking the actuator off its up travel stop with a regu-
lated air source.
11. Apply Loctite 271 or equivalent thread-locking
compound (key 77) to the threads of the cap screw
(key 18).
12. Connect the lever (key 27) and the rod end bear-
ing (key 17) with the cap screw and hex nut (keys 18
and 19). Tighten the cap screw to the torque value
listed in table 7.
13. If a positioner is to be used, consult the separate
positioner instruction manual for proper positioner
installation.
14. Coat the bearing surfaces of the hub (key 29) and
cover (key 33) with Lubriplate MAG-1 or equivalent
lubricant (key 76). Install the bearing (key 31) and hub
into the cover. Secure with the retaining ring (key 30).
15. Install the travel indicator scale (key 35) so that
the markings on the scale and cover that were made
in step 5 of the disassembly procedure are oriented
correctly. Secure the travel indicator scale to the cover
with the self-tapping screws (key 36). Then install the
travel indicator (key 37), and secure it with the self-
tapping screws (key 38).
16. Position the travel indicator (key 37) so that the
markings on the travel indicator and travel indicator
scale that were made in step 3 of the disassembly pro-
cedure are oriented correctly. Then, replace the cover
(key 33), and secure it with the cap screws and wash-
ers (keys 34 and 63). If the holes in the cover and
housing (key 20) do not align, use a regulated air
source to move the actuator slightly off the up travel
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