Replacing The Diaphragm And Stem Seal - Samson 3271 Mounting And Operating Instructions

Operation
2.2 Replacing the diaphragm
and stem seal
Diaphragm (Fig. 2)
1. Remove the diaphragm plate (7) to-
gether with diaphragm (8) and actuator
stem (2) from the diaphragm case as de-
scribed in section 2.1.
2. Remove the hose clamp (8.1) and pull it
together with the diaphragm (8) off the
diaphragm plate (7) (not necessary with
Type 3271-5 as the diaphragm is held
in place by the metal plate (7.1)).
3. Stretch the new diaphragm onto the dia-
phragm plate. Fit the hose clamp (8.1)
evenly into the groove intended for it
and tighten. Insert a piece of protective
wear-resistant rubber between the dia-
phragm and the worm screw of the hose
clamp (jubilee clip) to protect the dia-
phragm.
4. Reassemble actuator as described in
section 2.1.
Stem seal (Fig. 6)
1. Remove the diaphragm plate (7) to-
gether with the actuator stem (2) from
the diaphragm case as described in
section 2.1.
2. Coat the new stem seal (12) with lubri-
cant/sealant (order no. 8152-0043)
and insert it.
3. If necessary, replace the dry bearing (12.1)
and wiper (13) with new ones as well.
4. Reassemble the actuator as described in
section 2.1.
10
EB 8310 EN
Fig. 6 · Actuator stem seal
12
12.1
2
13