Changing Or Replacing Actuator Lever - Emerson Fisher 1051 Instruction Manual

1051 and 1052 Size 33 Actuators
June 2017
Figure 7. Orientation of Switch and Positioner Cams on the Lever of the Fisher 1051 and 1052 Size 33 Actuator
INNER SWITCH CAM
SPACERS
(ACTIVATES SWITCH
(KEY 132)
INDICATING BOTTOM
OF STROKE)
OUTER SWITCH CAM (ACTIVATES
W4767 SWITCH INDICATING TOP OF STROKE)
7. Install the housing cover assembly (key 33) with cap screws and washers (keys 34 and 63).
8. Tighten the socket head cap screw (key 9) with a 5/16 hex wrench until the diaphragm plate is fully seated against
the diaphragm rod. Tighten the cap screw to the torque value in table 2.
9. Perform steps 1 through 5 of the Assembly portion of the Replacing Diaphragm procedure.
10. For 1052 actuators, refer to the 1052 Spring Compression Adjustment procedure and adjust the spring for the
desired initial set.
11. Install the cover plate or switch mounting plate (key 59) with cap screws (key 60). If switches are used, observe the
marks made during removal of the cover plate.
12. Install the spring adjuster cover (key 117) or the switch mounting plate (key 1, figure 16) with the appropriate cap
screws.
13. Install the travel indicator (key 37) if removed.
14. If the actuator was removed from the valve body, refer to the appropriate section in the Actuator Mounting and
Changing Actuator Mounting procedure and proceed as follows:
For F and G mounting adaptations, perform all applicable steps beginning with step 3.
For H and J mounting adaptations, perform all applicable steps beginning with step 4.

Changing or Replacing Actuator Lever

Note
The lever and associated parts may be removed as an independent procedure without disassembling the upper diaphragm casing
or spring barrel components. Or, the lever may be removed after performing the operations given in the Replacing Diaphragm
procedure and in the Diaphragm Plate, Diaphragm Rod, Spring, and Spring Seat procedure.
16
POSITIONER
CAM
Instruction Manual
D101322X012