novaG-A
Manual Service
23/25
1.2 Issue
Ref. NR-00016-ENG
Pneumatic cylinder
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.
Proceed to remove the mix chamber following the procedure indicated in the
Gun block
unit and mix chamber
section. Clean the mix chamber and, if you consider it necessary,
use a brush to go over the passage holes.
2.
Unscrew the bolt fixing the lining pin on the rear of the gun.
3.
Remove the retention ring positioning the cylinder block, using pliers for seeger rings.
4.
Pull hard on the blocking device to remove the whole unit from the cylinder sleeve. Also
remove the spring and the plunger from inside the cylinder.
5.
Check the state of the o-rings of the shaft and the plunger. Replace them if they are
damaged. Apply a little grease to make it easier to assemble.
6.
Fit the plunger inside the cylinder sleeve taking special care not to damage the o-rings.
7.
Insert the spring in the rear housing of the plunger. Insert the cylinder block unit in the
lining, pressing until it passes the insertion groove of the retention ring.
8.
Fit the retention ring, using pliers for seeger rings.
