Lukas Hydraulic cylinder - Manual (Page 26)

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11. Troubleshooting
Trouble Check Cause Solution
Cylinder piston
moves slowly or
jerkily when activated
Are the hoses
connected
properly?
Air in the hydraulic
system
De-aerate pump
system
Does the pump
unit work?
Cylinder defective Remove the cylinder
from service and
have it repaired or
repair it
10.3.2 Couplings
The couplings must be replaced if:
- there is external damage
- the locking mechanism does not work
- hydraulic fluid continues to leak in the coupled/uncoupled state.
WARNING / CAUTION!
Never repair couplings: they must be replaced by original LUKAS parts!
During assembly, tighten the coupling to the torque that is quoted in the relevant spare parts
list for the cylinder.
Procedure:
1. Remove the coupling.
2. Position the new coupling and tighten to the torque quoted in the relevant spare parts list
of the cylinder.
10.3.3 Labels
All damaged and/or illegible labels (safety notices, type plate etc.) must be replaced.
Procedure:
1. Remove damaged and/or illegible labels.
2. Clean surfaces with industrial alcohol.
3. Attach new labels.
Ensure that you attach the labels in the right position. If this is no longer known, you should
ask your authorised LUKAS dealer or contact LUKAS directly.