IM-P361-02-EN-ISS1
CTLS
18
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TRANSLATION RUN OVER
Fig. 8 TN2000E
8
4
6
26
6
18
17
23
24
3
5
19
7
4.2 Replacing the 'O' and 'X' rings (SE and DE actuators)
Note:
Remove the actuator from the valve as described in Section 4.1.
Note:
Depending on the actuator size there is either 3 or 4 short threaded bars which must be removed last
to ensure that the spring tension is removed before taking the actuator apart.
-
Depending on the actuator size loosen and remove the 3 or 4 threaded bars (
7
).
-
Loosen then remove the remaining long securing nuts (
23
), see note above.
-
Remove the upper cylinder end cap (
4
).
-
Remove the spring (
3
) (not applicable for DA).
-
Remove the cylinder (
5
).
-
If the bearing seals are to be replaced remove the spindle (
19
) to fit the lower seal (
17
).
-
Replace the 'O' and 'X' rings (
6
,
26
and
24
).
To rebuild the actuator follow the next procedure:
Caution: POLYLUB GLY 801 must be used to ensure smooth operation of the piston.
-
Replace the spindle (
19
) if previously removed.
-
Apply grease to the internal of the cylinder (
5
) and the bearings (
18
) (approximately 50 mm to be in
contact with piston).
-
Lower the cylinder (
5
) onto the lower cylinder end cap (
1
).
-
Replace the springs (
3
).
-
R e p l a c e t h e u p p e r
cylinder end cap (
4
) over
the springs (
3
).
-
D e p e n d i n g o n t h e
actuator size refit the 3 or
4 long threaded bars (
23
)
and tighten the nuts (
8
)
evenly to pull the cylinder
(
5
) onto the lower cylinder
end cap. Then tighten to
30 Nm (22.1 lbf ft).
-
R e f i t a l l r e m a i n i n g
securing screws and nuts
(
7
and
8
) and tighten to
30 Nm (22.1 lbf ft).
-
Re-attach the actuator to
the valve as described in
Section 3.1.
