5 Maintenance
Study the instructions carefully.
The items refer to the parts list and service kits section.
5.7
Dismantling of (NC) maintainable actuator
If the actuator is marked with a danger warning, do NOT attempt to cut the actuator open.
See also section
DO NOT DISASSEMBLE
kg
!
SPRING UNDER LOAD
Do not attempt to cut open
kg
!
Do NOT attempt to disassemble the actuator due to spring
under load danger!
Do NOT attempt to cut the actuator open due to spring
under load danger!
Changing of wear parts
1. Rotate cylinder (1).
2. Remove lock wire (10) and pull away cylinder (1). This can be done by careful using air on fitting (12).
3. Remove O-ring (11) from bottom (15).
4. Unscrew top bushing (6) and remove o-ring (8).
5. Remove piston (2) together with support disk (16), thrust plate (53) and O-ring (3).
6. Remove spring assembly (14).
7. Remove seegering lock ring (57) using a seegering-tang tool.
8. Remove piston (52) and O-rings (3+60) together with spacer rings (56).
Spacer rings (56) are only mounted on Shut-off valve and not on Change-over valve.
Spacer rings are used to reduce the piston (52) stroke, so that the Shut-off valves intermediate plug position can be adjusted.
9. Remove guide ring (58) and O-ring (7).
10. Guide (54) is screwed on bottom part (15) and should only be dismantled if guide (54) is broken.
If guide (54) has to be dismantled start with unscrewing nuts (18) and remove yoke (13) and loosen nut (55). With a special
tool it now is possible to dismantle guide (54). This is shown in 4.8
Rotate cylinder with service tool!
2200-0083
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