Samson 3277-5 - Page 46

9-6 EB 8310-1 EN
Servicing and conversion
a) Actuator stem extends
1. Lift off the top diaphragm case (A1) and
remove springs (A10).
2. Pull the actuator stem (A7) together with
the diaphragm plate (A5.1), diaphragm
(A4) and diaphragm plate (A5.2) out of
the bottom diaphragm case (A2).
3. Remove the radial shaft seal (A40).
4. Check the dry bearing (A42) and wiper
(A41) and renew them, if necessary.
5. Apply a suitable lubricant to the seal lip
of the new radial shaft seal.
6. Use a suitable tool to mount the radial
shaft seal. Observe the correct alignment
oftheradialshaftseal(seeFig.9-2).
7. Fill the cavity of the radial shaft seal, in
which the spring is seated, with lubri-
cant.
8. Apply a suitable lubricant to the actuator
stem (A7).
9. Place the actuator stem (A7) together
with the diaphragm plate (A5.1), dia-
phragm (A4) and diaphragm plate
(A5.2) in the bottom diaphragm case
(A2).
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. Fasten the top and bottom diaphragm
cases (A1, A2) together using the nuts
(A21) and bolts (A20). Observe tighten-
ing torques.
b) Actuator stem retracts
1. Lift off the top diaphragm case (A1).
2. Pull the actuator stem (A7) together with
the diaphragm plate (A5.1), diaphragm
(A4) and diaphragm plate (A5.2) out of
the bottom diaphragm case (A2).
3. Remove the radial shaft seal (A40).
4. Check the dry bearing (A42) and wiper
(A41) and renew them, if necessary.
5. Apply a suitable lubricant to the seal lip
of the new radial shaft seal.
6. Use a suitable tool to mount the radial
shaft seal. Observe the correct alignment
oftheradialshaftseal(seeFig.9-2).
7. Fill the cavity of the radial shaft seal, in
which the spring is seated, with lubri-
cant.
8. Apply a suitable lubricant to the actuator
stem (A7).
9. Place the actuator stem (A7) together
with the diaphragm plate (A5.1), dia-
phragm (A4) and diaphragm plate
(A5.2) in the bottom diaphragm case
(A2).
10. Place on the top diaphragm case (A1).
11. Fasten the top and bottom diaphragm
cases (A1, A2) together using the nuts
(A21) and bolts (A20). Observe tighten-
ing torques.