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Installation, Operation and Maintenance Manual
RGS011110-3 Rev. 0
4�5
Yoke Seal and Bushing Replacement
In Bettis RGS F-Series actuators, the yoke seal does not serve any purpose other than to
prevent external contaminants from entering the torque module. The following steps
can be followed to replace the yoke seal and/or bushings.
1.
2.
3.
4.
Figure 13
5.
Figure 14
Maintenance
Depressurize the actuator and remove all supply lines.
Remove the actuator from the valve.
Ensure lockout (if provided) is disengaged.
Remove the hex nuts which secure the force modules to the torque module of
the actuator. Do this for both force modules.
Separate the force modules from the torque module. This can be done by sim-
ply pulling the force modules away from the torque module simultaneously.
Section 4: Maintenance
November 2015
16
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