5.
Remove the actuator top plate and actuator diaphragm.
6.
Remove the indicating spindle
7.
Install the new actuator diaphragm (top hat up).
Be sure the actuator diaphragm is positioned so the diaphragm bolt holes line up with the cover bolt
holes with no stretching of the diaphragm.
8.
Replace the actuator top plate and actuator diaphragm:
a) Prepare the spindle nut surface with Loctite 7649 Primer N.
b) Apply Blue Loctite #242 to the indicating spindle.
c)
Replace the indicating spindle.
9.
Assemble the upper cover using care to keep the air fitting in line with the lower cover air fitting.
10. Tighten the actuator cover to cover fasteners.
For more information, see Tighten the actuator cover to cover fasteners in this manual.
3.13 Tighten the actuator cover to cover fasteners
Tighten the bonnet fasteners in a crisscross pattern with proper torque.
1.
Tighten the bonnet fasteners in a crisscross pattern in accordance with Fastener torque table for
actuator cover to cover.
2.
Make multiple crisscross passes to build up torque to final table values.
3.13.1 Fastener torque table for actuator cover to cover
Actuator series Bolt size Torque
Imperial in-lb N-m
Series 3, 5, 8
#10
20
2.3
Series 16
1/4"
35
4.0
Values given are for lubricated fasteners.
Torques should be applied at near ambient conditions (less than 38ºC | 100ºF).
3.13 Tighten the actuator cover to cover fasteners
Advantage® 2.1 Actuator Maintenance Manual
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