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Festo 7ADNc_en
5
Repair steps
This chapter describes how to dismantle, repair and assemble the cylinder with piston rod. Note that the cylinder with
piston rod does not need to be fully dismantled for all repair work.
Depending on the cause of the defect to be eliminated, it may be necessary to replace several components. The cause of
a defect must therefore always be determined before starting a repair.
The repair should preferably be carried out on a stable and flat work surface with storage for small parts.
5.1
Preparatory measures
Caution
Risk of injury due to sudden, uncontrolled flying off of the bearing cap!
The cylinder with piston rod must be completely depressurised before each repair.
Remove the check valves and tubing connection from the cylinder, to completely depressurise the cylinder.
Note
To prevent damage to sealing rims or guide surfaces, do not use pointed or sharp-edged assembly aids. Keep your
working environment clean and tidy.
Note
Before starting the repair, remove any attachments (clamping device, end-position locking, etc.) in accordance with
the corresponding operating instructions.
Only use the specified spare parts and assembly aids (grease, locking agent, etc.).
5.2
Visual inspection
Check the cylinder for visible damage that could impair its function, such as warping of the piston rod as well as deposits
and scoring. The entire linear actuator must be replaced if there are signs of significant damage.
