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Original document - Mi-503 EN Edition: 2022-06
6. Move the piston rod so that the whole lever can be lifted out of the housing and
dismantle the lower link arm (
➔ Fig.5-5/12) from the lever.
7. Fit new bushings (
➔ Fig.5-5/9) in the cover (➔ Fig.5-5/4) respective bottom of the
housing.
8. Fit new O-rings (
➔ Fig.5-5/10) and new bushings (➔ Fig.5-5/11) on the lever.
9. Fit the new lower link arm (
➔ Fig.5-5/12) with pivot pin (➔ Fig.5-5/13) on the lever.
Lock with the screw (
➔ Fig.5-5/14).
Note
Observe the position of the washers.
10. Fit the new pin bolt (➔ Fig.5-5/8) and washer on the new upper link arm
(
➔ Fig.5-5/7) and lock with locking ring (➔ Fig.5-5/15).
11. Refit the lever in the actuator housing. For ATEX connect the grounding cable (
➔
Fig.5-5/17) in the actuator house.
12. Align the piston rod and lower link arm with each other and insert the pin
bolt through the piston rod.
13. Secure the upper link arm on the lever by inserting the pivot pin (
➔ Fig.5-5/6).
Note
The right position for the washers is demonstrated in the drawing (➔ Fig.5-6). Lock with screw
(
➔ Fig.5-5/5).
14. Fit a new gasket (➔ Fig.5-5/16) and refit the cover and the driver.
See “Replacing the sealing kit” (
➔ Chap.5.3) to replace other parts in the
repair kit.
Note
When replacing the piston rod seal, the bushing in the housing end cover should be replaced.
The bushing is included in the repair kit but not in the sealing kit.
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