5. Pull the piston guide out of the tool.
NOTE
Further disassembly of the piston guide is not
necessary.
6. Clean the seat of the piston guide in the tool.
7. Use the large brushes to clean the inside and outside
surfaces of the piston guide.
8. Use the small round brush to clean the bore for the
regulating pin and use the tapered brush to clean
the cartridge chamber.
9. Spray the slider and the collar of the piston guide
with Hilti lubricant spray.
10. Spray the steel parts inside the tool with Hilti lubric-
ant spray.
NOTE
Use of lubricants other than Hilti spray may
cause damage to rubber parts.
11. Check that the tool cycling grip is in its starting
position.
12. Insert the piston guide into the tool.
13. Apply light pressure to the piston guide.
NOTE
The lever can be closed only when the piston
guide is pressed (several mm) into the tool. If the
lever still cannot be closed, please refer to the
information in section 9 “Troubleshooting”.
14. Close the piston release lever with light pressure
applied to the piston guide.
15. Insert the piston into the piston guide.
16. Fit the piston brake.
17. Screw the fastener guide (or fastener magazine) onto
the piston guide as far as it will go and then turn it
back until it engages.
18. Lubricate the cartridge transport mechanism by ap-
plying Hilti lubricant spray in the gap in the housing
behind the cycling grip.
19. Cycle the tool once with the cycling grip.
8.3 Checking the tool after care and maintenance
After carrying out care and maintenance and before load-
ing the cartridges, check that all safety devices have been
fitted and that they function faultlessly.
9 Troubleshooting
WARNING
The tool must be unloaded before taking any steps to remedy faults.
Fault
Possible cause
Remedy
Cartridges are not transported.
The cartridge strip is damaged.
Change the cartridge strip.
See section: 7.3.1 Removing cart-
ridges from the tool
7
The tool is damaged.
Contact Hilti.
Cartridge strip can’t be
removed.
The tool is damaged or has over-
heated as a result of an excessively
high fastener driving rate.
Allow the tool to cool and then care-
fully try again to remove the cartridge
strip. Remove the piston guide from
the tool. If a cartridge sleeve remains
jammed in the cartridge chamber, use
the round rod from the cleaning set to
remove it. If this is still not possible,
contact Hilti.
NOTE
Do not attempt to forcibly remove
cartridges from the magazine strip or
tool.
Cartridge doesn't fire.
The tool is not pressed fully against
the working surface.
Press the tool fully against the work-
ing surface and pull the trigger.
The cartridge strip is used up.
Remove the used cartridge strip.
Load a new strip.
The magazine or fastener guide is not
screwed on far enough.
Screw the magazine farther onto the
tool.
One of the cartridges is faulty.
Cycle the tool and use up the remain-
ing cartridges.
The tool is defective or the cartridges
are faulty.
Contact Hilti.
The tool is not cycled.
Cycle the tool.
en
29
Printed: 30.05.2016 | Doc-Nr: PUB / 5069849 / 000 / 04
