Hilti DX 351-CT Operating Instructions Manual page 29

Fault
The fastener is not driven deep
enough.
The tool remains compressed
(does not extend to original
state when pressure is
released).
A cartridge doesn't fire.
Big drop in driving power.
The piston guide jams.
The tool cannot be fired even
when fasteners and cartridges
are inserted correctly.
Printed: 17.04.2014 | Doc-Nr: PUB / 5069829 / 000 / 03
Possible cause
Fastener driving power is too low.
The fastener used is too long.
The tool is fouled with dirt and
residues.
The piston is broken.
The tool is damaged.
The tool is fouled with dirt and
residues.
The tool is not pressed fully against
the working surface.
The cartridge strip is used up.
One of the cartridges is faulty.
The tool is defective or the cartridges
are faulty.
The tool is badly fouled with dirt and
residues.
The tool is badly fouled with dirt and
residues.
The tool is badly fouled with dirt and
residues.
The piston is damaged.
Excessively thick fire protection coat-
ing on the ceiling.
The tool is badly fouled with dirt and
residues.
Incorrect use of the grip.
Material with fire protection coating.
Remedy
Increase fastener driving power in
accordance with recommendations
or, respectively, use a more powerful
cartridge.
Use a shorter fastener if permissible.
Clean the tool.
Change the piston.
Contact Hilti.
Clean the tool.
Press the tool fully against the work-
ing surface.
Remove the used cartridge strip and
load a new one.
Push the cartridge strip further and
use up the remaining cartridges.
Contact Hilti.
Clean the tool.
Clean the tool.
Clean the tool.
Unscrew the black housing.
Check the piston and replace it if ne-
cessary.
Remove the fire protection coating.
Clean the tool.
Use the grip correctly.
See section: 7.2 Operation 3 4
Excessively thick fire protection coat-
ing on the ceiling.
en
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