Samson 3277-5 - Page 44

9-4 EB 8310-1 EN
Servicing and conversion
6. Check the sealing element of the collar
nut (A15). If necessary, renew it (order
no. 8353-0533).
7. Apply a suitable lubricant to the actuator
stem (A7).
8. 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).
9. Tighten the collar nut (A15).
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. Unscrew the collar nut (A15).
Malfunction due to loosened nut.
The nut (A9) on the actuator stem serves to
adjust the dimension a.
Î Do not undo the nut (A9).
Î If the nut has been loosened, readjust the
dimensiona as specied in Table 9-1.
A1 Top diaphragm case
A2 Bottom diaphragm case
A2.1 Switchover/connecting
plate for signal pressure
routing
A4 Diaphragm
A5.1 Diaphragm plate
A5.2 Diaphragm plate
A7 Actuator stem
A8 Ring nut
A9 Hexnut
A10 Springs
A15 Collar nut
A16 Vent plug
A20 Hexbolt
A21 Hexnut
A40 Radial shaft seal
A41 Wiper ring
A42 Dry bearing
A133 Stop bushing
S Signal pressure
connection
Dim. a Refer to Table 9-1
A2.1
a
A4
S
A5.1
A5.2
A8
A41
A42
A40
A16
A1
A7
A15 A9 A10
A20/21
a
A133
Type3271-5
Type3277-5
Fig.9-1: Type3271-5 and
Type3277-5
Pneumatic Actuators
NOTICE
!