19 / 24Festo 7DZF / DZHb_en
4.4.5 Repairing and attaching the bearing and end caps
• Remove the piston rod seal 1 from the bearing cap 2 (both bearing caps
on cylinders with through piston rod (S2 / S20)).
• Remove the O-Ring 4 from the bearing and end caps 2 (both bearing caps
on cylinders with through piston rod (S2 / S20)).
• Remove the cushioning seal 3 from the bearing cap and end cap (both
bearing caps on cylinders with through piston rod (S2 / S20)).
1 3 42
Warning
Check the plain bearing in the bearing cap (the front and rear bearing caps
on cylinders with through piston rod (S2 / S20)) for visible damage that
might impair its function, such as deposits and scoring. The entire bearing
cap must be replaced if the plain bearing is showing signi cant damage.
• Remove the regulating screw from the bearing cap and end cap.
Note
The serrated ring is only present from size DZH-32-….
– Remove the serrated ring 1 from the bearing cap and end cap.
1
– Unscrew the regulating screw 2 fully.
2
1
– Remove the O-ring 3 from the regulating screw 2.
– Clean the thread and hole 4 of the end-position cushioning in the
bearing cap and end cap.
4
1
2
3
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