GAMA Master Series Service Manual - Page 16
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Cylinder block and safety stop
WARNING:
Before performing maintenance work on the gun, make sure that the unit is
at a complete standstill, that all of the buttons and the main switch are turned off and that
the unit is disconnected from the main power supply. The gun is a component that
works under pressure; no connection must be opened or maintenance work done on
components subject to pressure until the pressure has been completely eliminated.
Remove the side blocks and carefully separate them from the gun block.
Clean the contact surfaces with a cloth dampened in gun cleaning solvent.
Unscrew the bolt fixing the clamp on the rear of the gun.
Remove the retaining ring from the cylinder using the snap ring pliers.
Pull hard on the safety stop to remove the whole unit from the cylinder. Also remove the
plunger spring.
Check the state of the o-ring seal on the end cap. Replace it if it is damaged.
Apply a little grease to facilitate the placement of the o-ring.
Loosen the two set screws on the safety stop. Remove the stop pin and the stop spring from the
device.
Remove the end cap from the stop pin.
Remove the lip seal from the end cap and replace it if it is damaged. Apply a little grease to
facilitate the fitting.
Pay attention to the correct installation of the lip seal: The seal lips must face forward.
Fit the end cap onto the stop pin. Slide the spring and the safety stop onto the stop pin. Tighten
the two set screws making sure that they are perfectly aligned with the flats on the end of the
stop pin. Make sure that the blocking device is well-fitted.
Insert the spring in the rear housing of the plunger. Insert the end cap into the cylinder bore by
pressing until it passes the insertion groove of the retention ring.
Fit the retention ring using snap ring pliers.
16/20
1.5 Issue
Ref. NR-00008-ENG
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