EB 8313-3 EN 11-3
Removal
3. Undo the rod nuts (A54) in alternating
sequence.
4. Pull the rods (A33, A51) out of the holes
in the valve bonnet (2).
5. Thread the rod nuts (A54) onto the rods
(A33, A51) on the actuator.
6. Screw tight the stem connector clamps
(A12) onto the actuator. Observe tight-
ening torques.
11.2 Relieving the spring com-
pression in the actuator
See Fig.11-1
The long clamping bolts with clamping nuts
and the short bolts with nuts are arranged
evenly around the circumference of the actu-
ator housing to fasten the top and bottom di-
aphragm cases together. The springs in the
actuator are compressed using the long
clamping bolts with the associated nuts.
To relieve the compression of the springs in
the actuator, proceed as follows:
1. Unthread and remove the short nuts and
bolts (including the washers) on the dia-
phragm cases.
2. Loosen the long clamping nuts and bolts
on the diaphragm cases evenly in a
crisscross pattern to gradually relieve the
spring compression. Hold the bolt head
stationary with a suitable tool and apply
the torque to the nuts.
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