Hilti DX 5 Original Operating Instructions page 18

Malfunction
The fastener is not driven
deep enough.
The piston jams in the ex-
haust gas piston return unit.
The exhaust gas piston return
unit jams.
No fastener driven: The tool
fires, but no fastener is
driven.
The tool cannot be fired.
The piston jams in the fas-
tener guide.
10 English
Printed: 29.09.2017 | Doc-Nr: PUB / 5292579 / 000 / 01
Possible cause
The piston is incorrectly
positioned.
Bad cartridge.
The piston is damaged.
Rubber dust or debris in the piston
return unit.
Build-up of combustion residues.
Build-up of combustion residues.
The piston is incorrectly
positioned.
The tool was not pressed fully
against the working surface.
The magazine is not loaded.
Plastic fragments in the magazine.
The piston is incorrectly
positioned.
Nails in the magazine are not cor-
rectly positioned.
The piston and/or buffer are dam-
aged.
Plastic fragments in the magazine.
Use of excessively high driving
power on steel.
Firing the tool at a high power set-
ting without a fastener loaded.
Action to be taken
▶ Remove the cartridge strip and
clean the tool.
▶ Check the piston and buffer and
replace if necessary.
▶ Pull the cartridge strip through
to the next cartridge.
▶ Change the piston.
▶ Check the piston and buffer and
replace if necessary.
▶ Contact Hilti Service if the
problem persists.
▶ Service the tool.
▶ Service the tool.
▶ Remove the cartridge strip and
clean the tool.
▶ Check the piston and buffer and
replace if necessary.
▶ Press the tool fully against the
working surface.
▶ Load the magazine.
▶ Open the magazine, remove the
nail strip and plastic fragments.
▶ Remove the cartridge strip and
clean the tool.
▶ Check the piston and buffer and
replace if necessary.
▶ Reload the tool.
▶ Unscrew the magazine, check
the piston and buffer and
replace if necessary.
▶ Open the magazine, remove the
nail strip and plastic fragments.
▶ Reduce the driving power.
▶ Avoid firing the tool without a
fastener loaded.