Emerson Process Management 1051 - Manual (Page 23)

Instruction Manual
D100320X012
1051 and 1052 H & J Actuators
October 2012
23
6. For an actuator with an H mounting adaptation,
a. Unscrew the cap screws (key 78) and remove the actuator assembly from its mounting bracket.
b. Unscrew the cap screws (key 23) and remove the mounting plate (key 22) and output shaft (key 87) assembly
from the actuator housing. Remount the assembly on the opposite side of the actuator, and secure it to the
housing with the cap screws (key 23). Tighten the cap screws to the torque value listed in table 11.
c. Rotate the actuator housing 180 degrees, maintaining the appropriate position (1, 2, 3, or 4) and secure the
actuator housing to the mounting bracket with the cap screws (key 78). Tighten the cap screws to the torque
value listed in table 4.
7. Install the lever (key 27) as follows:
a. For push-down-to-open action, rotate the operated equipment to the fully closed position.
b. For push-down-to-close action, rotate the operated equipment to the fully open position.
c. With the operated equipment oriented correctly, slide the lever onto the output shaft (key 87) with the end
marked in step 4 inserted first. 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).
d. Temporarily rotate the lever and output shaft until the rod end bearing no longer interferes with further
installation of the lever. Then, slide the lever as far as it can go onto the output shaft. Clamp the lever to the
output shaft with the cap screw (key 28). Tighten the cap screw to the torque value listed in table 11.
e. Rotate the lever and output shaft back to the original position (i.e., operated equipment fully closed for
push-down-to-open action or operated equipment fully open for push-down-to-close action). Then, adjust the
rod end bearing so that it can be attached to the lever.
8. Apply thread-locking adhesive (high strength) (key 77) to the threads of the cap screw (key 18).
9. Connect the lever (key 27) and the rod end bearing (key 17) with the cap screw and hex nut (keys 18 and 19). This
connection can be aided by stroking the actuator from its up travel stop with a regulated air source. Tighten the cap
screw to the torque value listed in table 11.
10. Note the position of the valve body or other operated equipment and direction of rotation. Position the travel
indicator (key 37) accordingly. Replace the cover (key 33), and secure it with the cap screws and washers (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 stop. If hole alignment cannot be obtained in this manner, temporarily loosen the cap
screws (key 23), and shift the housing slightly. Do not stroke the actuator while the cover is off. Tighten both sets of
cap screws to the torque values listed in table 11.
11. Follow the instructions in the Turnbuckle Adjustment section.
Changing Positions
1. Unscrew the cap screws and washers (keys 34 and 63), and remove the cover (key 33).
2. Mark the orientation of the lever (key 27) with respect to the output shaft (key 87). This marking is used during
reassembly to allow for proper lever/output shaft positioning. When the lever and output shaft are properly
marked, heat the hex nut (key 19) to 177_C (350_F) long enough for the thread-locking adhesive (high strength)
(key 77) to lose its holding strength. Then, remove the cap screw and hex nut (keys 18 and 19).
CAUTION
If necessary, use a wheel puller to remove the lever (key 27) from the output shaft (key 87). You may tap the wheel puller
screw lightly to loosen the lever, but hitting the screw with excessive force could damage the operated equipment.