Replacing Parts Subject To Wear; Leak-Testing The Actuator - Samson 3275A Mounting And Operating Instructions

Servicing
9.4.1 Replacing parts subject
to wear
1. Unscrew collar nuts (11) on the cylinder
base.
2. Pull off the tie rods (12) towards the side
with the piston rod.
3. Remove the cover (4) or bottom cover
(2).
4. Pull the piston rod (7) and piston (9) from
the cylinder barrel (6).
5. Separate the cylinder barrel (6) and
base (10) or top cover (1).
6. Use a suitable tool to remove parts sub-
ject to wear. Make sure that the facings
are not damaged.
7. Carefully clean the affected places and
apply a suitable lubricant to them.
8. Apply a suitable lubricant to the parts
subject to wear.
9. Mount the parts subject to wear. Make
sure that the parts and facings are not
damaged. If necessary, use an assembly
tool.
10. Apply a suitable lubricant evenly to the
face in the barrel (6) and piston rod (7).
11. Fill the grease chambers at the lip seal
(450-2) and piston rod seal (450-4) with
a suitable grease.
12. Center the barrel (6) on the base (10) or
top cover (1).
13. Insert the piston (9) with piston rod (7)
into the cylinder barrel (6). Make sure
that the parts subject to wear are not
damaged.
9-4
14. Carefully slide the cover (4) or bottom
cover (2) over the piston rod (7).
15. Screw the tie rods (12) from side with the
piston rod with the short thread side into
the collar nuts (11) on the cylinder base.
Tighten the collar nuts in a crisscross pat-
tern. Observe tightening torques.

9.5 Leak-testing the actuator

After replacing the parts subject to wear, the
actuator must be tested for leakage at the
following places:
− Connection of cover (4), base (10) and
cylinder barrel (6) or connection of top
cover (1), bottom cover (2) and cylinder
barrel (6)
− Piston rod seal (450-4)
EB 8314-1 EN