Samson 3277 - Malfunctions; Troubleshooting

EB 8310-6 EN 9-7
Service and conversion work
9.4.2 Replacing the actuator
stem seals
Refer to Fig.9-3
a) Version with direction of
action "actuator stem
extends"
1. Lift off the top diaphragm case (A1) and
remove springs (A10).
2. Pull the diaphragm plate assembly con-
sisting of the diaphragm plate (A5), dia-
phragm (A4) and actuator stem (A7) out
of the bottom diaphragm case (A2).
3. Use a suitable punch to remove the radi-
al 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.9-3).
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 diaphragm plate assembly con-
sisting of the diaphragm plate (A5), new
diaphragm (A4) and actuator stem (A7)
into the bottom diaphragm case (A2).
Make sure that the sealing elements are
not damaged. Ensure that the com-
pressed air connections on the cases
A42
A41
A40
A42
A40
A42
A7
A41
A7 Actuator stem
A40 Radial shaft seal
A41 Wiper ring
A42 Dry bearing
Type3271
Type3277
Fig.9-3: Actuator stem seals