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Festo 7CRHDb_en
•
Apply the grease included in the set of wearing parts to the following parts:
Component
Greasing
Surface of piston rod
Thin film
1)
Piston surface between lip rings
Thin film
1)
Cushioning boss
Thin film
1)
on
outside
1)
See chapter
5.2.2 "Thin grease film"
4.4.4
Inserting the piston rod into the cylinder barrel
•
Clean the inner surface of the cylinder barrel as described in
chapter
5.1 "Cleaning"
.
•
Apply the grease included in the set of wearing parts to the following parts:
Component
Greasing
Insert sleeve for piston
Thin film
1)
Inner surface of cylinder barrel
Thin film
1)
1)
See chapter
5.2.2 "Thin grease film"
•
Insert a suitable insert sleeve, which covers the internal thread of the cylin-
der barrel, on to the cylinder barrel.
•
Insert the piston fully into the cylinder barrel through the insert sleeve.
The sealing lip must not fold back against the inside of the piston.
Note
If necessary use a flat and blunt-edged object to insert the lip ring into
the insert sleeve.
•
Place the insert sleeve for the piston on the other end of the cylinder barrel.
•
Push the piston far enough through the cylinder barrel and insert sleeve so
that the first lip ring protrudes slightly out of the insert sleeve.
•
Pull the piston rod back again until the piston is sitting fully in the cylinder
barrel.
Note
This approach ensures that the sealing lips of the two lip rings sit correctly in
the cylinder barrel.
4.4.5
Repairing and attaching the bearing and end caps
•
Remove the retaining ring
1
and the piston rod seal
2
from the bearing
cap
3
.
•
Remove the O-ring
4
from the groove of the bearing cap and end cap.
•
Remove the cushioning seal
5
from the bearing and end caps.
1
3
2
4 5
