novaG-A
Manual Service
21/25
1.2 Issue
Ref. NR-00016-ENG
Cylinder block and blocking device
WARNING:
Before carrying out maintenance work on the gun, make sure that the unit
has been completely stopped, that all of the push buttons and the main switch are turned
off and that the unit is disconnected from the main power supply. The gun is a
component which works under pressure. No connection must be opened or
maintenance work be done on component subject to pressure until the pressure has
been completely eliminated.
1.
Unscrew the bolt fixing the lining pin on the rear of the gun.
2.
Remove the retention ring positioning the cylinder block, using pliers for seeger rings.
3.
Pull hard on the blocking device to remove the whole unit from the cylinder sleeve. Also
remove the plunger spring.
4.
Check the state of the closing seal of the cylinder block. Replace it if it is damaged.
5.
Apply a little grease to make it easier to assemble.
6.
Loosen the two adjustment screws on the blocking device. Remove the blocking screw and
the blocking spring from the device.
7.
Separate the cylinder block from the blocking screw.
8.
Remove the collar from the cylinder block and replace it if it is damaged. Apply a little
grease to make it easier to assemble.
9.
Pay special attention to correctly fit the collar:
the closing lips must face the cylinder
side.
