9-8 EB 8310-6 EN
Service and conversion work
(A1, A2) are correctly aligned with each
other.
10. Place the springs (A10) into the bottom
diaphragm case, centering them in the
intended recesses.
11. Place on the top diaphragm case (A1).
12. If necessary, preload the springs (see the
'Start-up' section).
13. Fasten the top and bottom diaphragm
cases (A1, A2) together using the nuts
(A21) and bolts (A20). Observe tighten-
ing torques.
b) Version with direction of
action "actuator stem
retracts"
1. Lift off the top diaphragm case (A1).
2. Pull the diaphragm plate assembly con-
sisting of the diaphragm plate (A5), dia-
phragm (A4) and actuator stem (A7) out
of the actuator.
3. Take the springs (A10) out of the bottom
diaphragm case (A2).
4. Use a suitable punch to remove the radi-
al shaft seal (A40).
5. Check the dry bearing (A42) and wiper
(A41) and renew them, if necessary.
6. Apply a suitable lubricant to the seal lip
of the new radial shaft seal.
7. Use a suitable tool to mount the radial
shaft seal. Observe the correct alignment
of the radial shaft seal (see Fig.9-3).
8. Fill the cavity of the radial shaft seal, in
which the spring is seated, with lubri-
cant.
9. Apply a suitable lubricant to the actuator
stem (A7).
10. Clamp the top diaphragm case (A1) with
the opening facing upward into a suit-
able clamping xture.
11. Place the diaphragm plate assembly to-
gether with the actuator stem (A7) point-
ing upward into the diaphragm case
(A1).
12. Place the springs (A10) in the diaphragm
plate (A5), centering them in the intend-
ed recesses.
13. Carefully guide the bottom diaphragm
case (A2) over the actuator stem (A7)
and place it on the springs (A10). Make
sure that the sealing elements are not
damaged. Ensure that the compressed
air connections on the cases (A1, A2)
are correctly aligned with each other.
14. Fasten the top and bottom diaphragm
cases (A1, A2) together using the nuts
(A21) and bolts (A20). Observe tighten-
ing torques.
To Next Page
Loading...
