Samson 3256, Mounting And Operating Instructions, Page: 59 / 84

EB 8065 EN 9-9
Servicing
12. Carefully slide the packing parts over the
plug stem into the packing chamber us-
ing a suitable tool. Observe the proper
sequence (see Fig. 9-3).
13. Firmly press the plug (5) into the seat (4).
Fasten down the bonnet (2) with the
body nuts (14). Tighten the nuts gradual-
ly in a crisscross pattern. Observe tight-
ening torques.
14. Screw in the threaded bushing (8) and
tighten it. Observe tightening torques.
15. Place yoke (3) on the bonnet (2) and fas-
ten tight using the castellated nut (92).
16. Loosely screw the lock nut (10) and stem
connector nut (9) onto the plug stem.
ADSEAL packing
1. Proceed as described in ‘Standard pack-
ing (PTFE)’, steps 1 to 11.
2. Carefully slide the packing parts over the
plug stem into the packing chamber us-
ing a suitable tool. Observe the proper
sequence (see Fig. 9-4).
3. Slide the seals (15.2) over the plug stem.
Insert the wire of the red spacer ring
(15.1) into the groove of the retaining
ring.
Slide the retaining ring over the plug
stem.
4. Insert the red spacer ring (15.1) between
the threaded bushing (8) and retaining
ring. See Fig. 9-4.
5. Proceed as described in ‘Standard pack-
ing (PTFE)’, steps 13 to 16.
b) Version with insulating
section
Standard packing (PTFE)
1. Unscrew the castellated nut (92) and lift
the yoke (3) off the insulating section
(21).
2. Undo the body nuts (14) gradually in a
crisscross pattern.
3. Lift the insulating section (21) and plug
with plug stem (5) off the body (1).
4. Unthread the stem connector nut (9) and
lock nut (10) from the plug stem.
5. Unscrew the threaded bushing (8).
6. Pull the plug with plug stem (5) out of the
insulating section (21).
7. Pull the entire packing out of the packing
chamber using a suitable tool.
8. Renew the damaged parts and carefully
clean the packing chamber.
9. Apply a suitable lubricant to all the pack-
ing parts and to the plug stem (5).
10. Slide the plug with plug stem (5) into the
insulating section (21).
11. Place the insulating section (21) together
with the plug stem and plug (5) onto the
body.
Version with V-port plug: place the insu-
lating section (21) onto the valve body,
making sure that the largest V-shaped
port of the V-port plug faces toward the
valve outlet. See 'Mounting the actuator
onto the valve' in the 'Installation' sec-
tion.