Troubleshooting - Hilti DX 76 Operating Instructions Manual

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 lubri-
en
cant 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".

9 Troubleshooting

WARNING
The tool must be unloaded before taking any steps to remedy faults.
Fault
Cartridges are not transported.
Cartridge strip can't be
removed.
Cartridge doesn't fire.
12
14. Close the piston release lever with light pressure
15. Insert the piston into the piston guide.
16. Fit the piston stopper.
17. Screw the fastener guide (or fastener magazine) onto
18. Lubricate the cartridge transport mechanism by ap-
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.
Possible cause
The cartridge strip is damaged.
The tool is damaged.
The tool is damaged or has over-
heated as a result of an excessively
high fastener driving rate.
The tool is not pressed fully against
the working surface.
The cartridge strip is used up.
The magazine or fastener guide is not
screwed on far enough.
One of the cartridges is faulty.
The tool is defective or the cartridges
are faulty.
The tool is not cycled.
applied to the piston guide.
the piston guide as far as it will go and then turn it
back until it engages.
plying Hilti lubricant spray in the gap in the housing
behind the cycling grip.
Remedy
Change the cartridge strip.
See section: 7.3.1 Removing car-
tridges from the tool 8
Contact Hilti.
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.
WARNING
Do not attempt to forcibly remove
cartridges from the magazine strip or
tool.
Press the tool fully against the work-
ing surface and pull the trigger.
Remove the used cartridge strip.
Load a new strip.
Screw the magazine farther onto the
tool.
Cycle the tool and use up the remain-
ing cartridges.
Contact Hilti.
Cycle the tool.
See section: 8.2.2 Cleaning the piston
guide 18 19 20 21