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Festo 7ADNc_en
6
Repairing ADN and ADNGF cylinders
6.1
Structure of the bearing cap
1
3
2
4
1
O-ring
2
Bearing
3
Bearing cap
4
Piston rod seal
6.2
Removing the bearing and end caps
Carry out steps 1 to 5 for ADNGF only
1. Unscrew the socket head screw which connects the moment compensator
to the piston rod.
2. Remove the washer (only used on the ADNGF-80 / 100).
3. Clean the thread of the piston rod and socket head screw to remove any
locking agent residue.
4. Pull the moment compensator, together with the guide rods, from the
cylinder.
5. Clean the guide rods, see Chapter
Repair of the moment compensator unit is described in Chapter
6.6 “Repairing the moment compensator unit of the ADNGF”
6.
Unscrew the flange screws or socket head screws
(ADN / ADNGL-80 / 100 / 125 only) in the bearing and end caps (in the rear
bearing cap of cylinders with through piston rod (S2/20)).
7. Pull the bearing and end caps off the cylinder barrel and piston rod.
8. Clean the thread of the screws to remove any locking agent residue.
6.3
Replacing the piston components
1. Pull the piston rod out of the cylinder barrel.
2. Inspect the cylinder barrel and piston rod for damage.
The entire cylinder must be replaced if the cylinder barrel (particularly the
bearing surface) shows signs of significant damage.
