*2232121*
2232121 English 31
Malfunction Possible cause Action to be taken
Trigger resistance increases Build-up of combustion residues. ▶ Contact Hilti Service.
Selector ring for driving en-
ergy is difficult to turn
Build-up of combustion residues. ▶ Service the tool.
▶ Clean the cartridge chamber.
▶ Insert new cartridge strip.
The fastener is not driven
deep enough
Incorrect piston position in the
magazine-type fastening tool (pis-
ton not in initial position when firing
triggered)
▶ Remove the cartridge strip and
service the tool.
▶ Check piston and buffer.
→ page 30.
Driving energy too low ▶ Turn the selector ring for driving
energy to increase driving
energy.
▶
Use an extra-strong cartridge.
Piston bounce because driving
energy is too high.
▶ Turn the selector ring for driving
energy to reduce driving energy.
Piston jamming in exhaust
gas piston return unit
The piston is damaged. ▶ Change the piston.
Abraded material from buffer inside
the exhaust gas piston return unit.
▶ Check the piston and buffer and
replace if necessary.
▶
Contact Hilti Service if the
problem persists.
Build-up of combustion residues. ▶ Service the tool.
▶ Clean the cartridge chamber.
▶ Insert new cartridge strip.
Exhaust gas piston return unit
jammed. The fastening tool
remains compressed.
Build-up of combustion residues. ▶ Service the tool.
▶ Clean the cartridge chamber.
▶ Insert new cartridge strip.
No fastener driven: The fas-
tening tool fired, but no fas-
tener was driven
Incorrect piston position in the
magazine-type fastening tool (pis-
ton not in initial position when firing
triggered)
▶ Remove the cartridge strip and
service the tool.
▶ Check piston and buffer.
→ page 30.
Piston bounce because driving
energy is too high.
▶ Turn the selector ring for driving
energy to reduce driving energy.
Fastening tool cannot be fired
Fastening tool was not pressed
fully against the working surface.
▶ Press the fastening tool fully
against the working surface.
The magazine is not loaded. ▶ Load the magazine.
Plastic fragments in the magazine. ▶ Open the magazine, remove the
nail strip and plastic fragments.
Incorrect piston position in the
magazine-type fastening tool (pis-
ton not in initial position when firing
triggered)
▶ Remove the cartridge strip and
service the tool.
▶ Check piston and buffer.
→ page 30.
Nails in the magazine are not cor-
rectly positioned.
▶ Reload the fastening tool.
Fastener guide is not correctly en-
gaged.
▶ Turn the fastener guide or the
magazine until it engages with
an audible click. → page 26.
Piston bounce because driving
energy is too high.
▶ Turn the selector ring for driving
energy to reduce driving energy.
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