Seal replacement basic design
for cover and guide bushing
for cover and guide bushing
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Disassembly of sealing elements basic design
TIP: Place disassembled parts and seals in the same order and orientation as they were installed.
Carefully pierce the successive seals with a pointed tool, tilt them out of the groove and remove:
- Wiper ring [2]
- Lip seal [3]
- O-ring [4]
- Wear rings - if present
Note
- Non-replaceable guides (Servoslide® synthetic guide) must not be treated with sandpaper or similar materials.
- If necessary, smooth metallic guides with fine sandpaper.
Assembly of sealing elements basic design
- Compress the lip seal [3], place it on one side into the groove of the cover and press it in.
- Note the correct installation position (the groove of the sealing ring must face inwards, towards the pressure side).
- Compress the wiper ring [2], insert it on one side into the groove and press it in.
- Note the correct installation position (sealing lip must point outwards).
- Slide the O-ring [4] over the rear outside diameter of the cover [1] and press it into the groove.
- Ensure that the o-ring is not twisted.
Note
- Ensure that installation spaces and sealing elements are clean and undamaged.
- For easier assembly: Moisten seals with functional fluid or use compatible assembly grease, warm up if necessary (max. +35 °C).
- Pre-shape wear rings slightly and insert them into the groove.
- When installing several wear rings one behind the other, make sure that the joints of the wear rings are offset from each other.
Video: Replacing seals for hydraulic cylinders
Servocop® cover and basic design
Watch our tutorial on replacing the seals on a Hänchen hydraulic cylinder with Servocop® cover or with basic design. A step-by-step guide with helpful information on how to quickly and easily replace the seals.
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