6. Repair Instructions
6.1) Disassembling Procedure
1. Disconnect all electrical and air supplies from the actuator.
2. Remove the actuator from the mounting bracket and place in a clean environment.
3. After removing the end cap screws (ref. 26), remove the end caps (ref. 24 and 25).
4. Remove O-Rings (ref. 23) from the end caps and inspect their wear and lubrication.
5. Remove the regulation screw, Nut and o’rings (ref. 18, 19 and 20), located in the lateral body
(ref. 4).
6. Using a wrench on the appropriate mill on the upper part of pinion (ref. 10), turn the pinion
counter-clockwise until the pistons (ref. 16) protrude further out from the cylinder to be removed.
7. Remove the pistons by hand or with pliers, taking the pistons from the spring grooves and
using caution not to damage the pistons’ surfaces. Note: If actuator is fail counter-clockwise the
pinion must be rotated in the opposite direction.
8. Remove O-Rings (ref. 15), guide ring (ref. 14) and guide piston (ref. 5) from the left and right
pistons.
9. Remove the seeger (ref. 1) and indicator (ref. 2 & 3). Firmly tap the upper part of the pinion on
a wood surface, to prevent damage of the pinion.
10. Remove the cam (ref. 9) and bearing (ref. 8) from the body (ref. 4).
11. Remove the pinion (ref. 10).
12. Remove the O-Rings and the bearings (ref. 6, 7, 11 and 12) from the pinion.
13. Inspect and replace the following wearing parts as necessary.
6.2) Assembly Procedure
1. Insert O-Rings (ref. 6 & 12) and bearings (ref. 7 & 11) on pinion (ref. 10).
2. Insert the pinion into the body (lower hole)
3. Insert the cam (ref. 9) and the bearing (ref. 8) on the pinion (ref. 10), pushing until the pinion is
completely inserted into the body (upper hole).
4. Intermediate test: using a wrench and acting on the appropriate mill on the upper part of the
pinion. Manually rotate the pinion to make sure it freely rotates.
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