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Maintenance
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11.00 | SRU-plus 20 - 60 | Assembly and Operating Manual | en | 389443
8.7.2 Dismantle and assemble rotary actuator (center position/locked
center position)
1. Ventilate rotary actuator.
2. Remove all air connections,
3. Dismantle sensors if necessary.
4. Unscrew screws (10) and remove both stop covers (9).
5. Unscrew screw (4) on stops "C" and "D" (5) one turn.
6. Unscrew screw (3) of the limiting sleeve.
7. Unscrew stops "C" and "D" (5) and in doing so retighten
screw (4) until the centering housing (2) can be removed.
✓
Unscrew both stops (5) evenly in order to prevent the
centering housing (2) from tilting.
8. Mark the installation position of the pinion (1) and the
pistons (6).
9. Unscrew protective cover (7).
10. Remove safety ring (8) on pinion (1).
11. Take pinion (1) out of the housing (11).
12. Take both pistons (6) out of the housing (11).
13. Assemble rotary actuator in the reverse order.
✓
Unless otherwise specified, secure all screws and nuts with
Loctite no. 243 and tighten with the appropriate tightening
torque.