Lukas Hydraulic cylinder - Manual (Page 24)

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Procedure:
1. First, fully retract the cylinder and switch the hydraulic system to depressurised.
2. Then, on double acting cylinders, extend them by approx. 10 mm, without load.
This hydraulically depressurises them.
3. Uncouple the hydraulic pump.
4. Place the cylinder in a suitable vessel or on a suitable substrate to collect the hydraulic
fluid that comes out.
5. Remove all attachments such as piston protection plates (if fitted).
WARNING / CAUTION!
With single acting cylinders with release spring please note that the
spring may remain under tension and take the appropriate precautionary
measures.
7. Release the guiding ring on the cylinder head.
6. Now you will have to remove the couplings.
8. Pull the guiding ring from the piston rod.