Hilti DX 6-GR Notice D'utilisation page 20

If the trouble you are experiencing is not listed in this table or you are unable to remedy the problem by
yourself, please contact Hilti Service.
Trouble or fault
Higher force required to press
the tool against the surface
Trigger resistance increases
Selector ring for driving en-
ergy is difficult to turn
The fastener is not driven
deep enough
Piston jamming in exhaust
gas piston return unit
Exhaust gas piston return unit
jammed. The fastening tool
remains compressed.
The piston jams in the fas-
tener guide
Fastening tool cannot be fired Fastening tool was not pressed
12 English
Possible cause
Build-up of combustion residues.
Build-up of combustion residues.
Build-up of combustion residues.
The fastener is too long.
Bad cartridge.
Driving energy too low
The piston is damaged.
Abraded material from buffer inside
the exhaust gas piston return unit.
Build-up of combustion residues.
Build-up of combustion residues.
The piston and/or buffer are dam-
aged.
Too much driving energy
Piston bent because tool fired
without fastener
fully against the working surface.
Incorrect piston position (piston
not in initial position when firing
triggered)
Fastener guide is not correctly en-
gaged.
Piston bounce because driving
energy is too high.
Action to be taken
▶ Service the tool.
▶ Clean the cartridge chamber.
▶ Insert new cartridge strip.
▶ Contact Hilti Service.
▶ Service the tool.
▶ Clean the cartridge chamber.
▶ Insert new cartridge strip.
▶ Use a shorter fastener.
▶ Pull the cartridge strip through
to the next cartridge.
▶ Turn the selector ring for driving
energy to increase driving
energy.
▶ Use an extra-strong cartridge.
▶ Change the piston.
▶ Check the piston and buffer and
replace if necessary.
▶ Contact Hilti Service if the
problem persists.
▶ Service the tool.
▶ Clean the cartridge chamber.
▶ Insert new cartridge strip.
▶ Service the tool.
▶ Clean the cartridge chamber.
▶ Insert new cartridge strip.
▶ Unscrew the magazine, check
the piston and buffer and
replace if necessary.
▶ Turn the selector ring for driving
energy to reduce driving energy.
▶ Avoid firing the tool without a
fastener loaded.
▶ Check the straightness of the
piston; replace if necessary.
▶ Press the fastening tool fully
against the working surface.
▶ Remove the cartridge strip and
service the tool.
▶ Check piston and buffer.
→ page 11.
▶ Turn the fastener guide or the
magazine until it engages with
an audible click. → page 7.
▶ Turn the selector ring for driving
energy to reduce driving energy.
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