Changing Actuator Mounting; Changing Styles - Fisher 1051 Instruction Manual

stop. If hole alignment cannot be obtained in this man-
ner, temporarily loosen the cap screws (key 23), and
shift the housing slightly. Do not stroke the actuator
while the cover is off. Tighten the cap screws to the
torque value listed in table 7.
17. Follow the instructions in the Actuator Mounting
portion of the Installation section for correct actuator
mounting and adjustment. Remember to replace the
access plate (key 59) when performing this procedure.

Changing Actuator Mounting

The actuator is normally positioned vertically in a hori-
zontal pipeline. However, there are two possible
mounting styles and four possible positions for each
style (see figure 7).
Due to its weight, the Type 1052, size 70
actuator must be externally supported if
mounted in the horizontal position.
WARNING
Avoid personal injury or property dam-
age from a sudden release of process
fluid. Before starting disassembly:
Isolate the valve or other operated
equipment from the process,
Release process pressure, and
Vent the actuator loading pressure.
Use the following procedures along with figures 10 and
11 for key number references to convert from style A
to style B or vice versa or to change the mounting
position.

Changing Styles

1. Unscrew the cap screws and washers (keys 34 and
63), and remove the cover (key 33).
2. Heat the hex nut (key 19) to 350 F (177 C) long
enough for the Loctite 271 thread-locking compound
(key 77) to lose its holding strength. Then, remove the
cap screw and hex nut (keys 18 and 19).
3. Loosen the cap screw (key 28).
Note
Type 1051 & 1052 Styles H & J
If necessary, use a wheel puller to re-
move the lever (key 27) from the output
shaft (key 87). It is permissible to tap the
wheel puller screw lightly to loosen the
lever, but hitting the screw with exces-
sive force could damage the operated
equipment.
4. Mark the side of the lever (key 27) that is nearest
to the end of the output shaft (key 87). This marking is
used during reassembly to determine which side of the
lever should be inserted into the actuator housing first.
When the lever is marked, remove the lever.
5. For an actuator with a J mounting adaptation,
a. Unscrew the cap screws (key 23), and remove
the actuator housing (key 20) from the mounting
yoke (key 22).
b. Rotate the actuator housing 180 degrees, main-
taining the appropriate position (1,2,3, or 4), and
place the actuator onto the mounting yoke (key 22).
c. Secure the actuator housing to the mounting
yoke with the cap screws (key 23). Tighten the cap
screws to the torque value listed in table 7.
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 val-
ue listed in table 7.
c. Rotate the actuator housing 180 degrees, main-
taining the appropriate position (1, 2, 3, or 4) and
secure the actuator housing to the mounting brack-
et with the cap screws (key 78). Tighten the cap
screws to the torque value listed in table 7.
7. Install the lever (key 27) as follows:
a. For push-down-to-open action, rotate the oper-
ated equipment to the fully closed position.
b. For push-down-to-close action, rotate the oper-
ated 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
CAUTION
19