Operating Instruction DX 5 GR (01)

English 17
Trouble or fault Possible cause Action to be taken
The exhaust gas piston return
unit jams.
Build-up of combustion residues. ▶ Service the tool.
The tool cannot be fired The tool was not pressed fully
against the working surface.
▶ Press the tool fully against the
working surface.
The piston is incorrectly
positioned.
▶ Remove the cartridge strip and
clean the tool.
▶ Check the piston and buffer and
replace if necessary.
7.2 Problems with fasteners to be driven into steel
Malfunction Possible cause Action to be taken
The fastener doesn’t pene-
trate deep enough
Driving power is too low. ▶ Increase driving power (adjust
power regulating wheel).
▶ Use a more powerful cartridge.
The application limits have been
exceeded (very hard material).
▶ Use a more powerful system,
e.g. DX 76 (PTR).
The fastener doesn’t hold in
the base material.
Thin supporting steel (45 mm) ▶ Use a different power setting or
different cartridge power level.
Fastener breakage.
Driving power is too low. ▶ Increase driving power (adjust
power regulating wheel).
▶ Use a more powerful cartridge.
The application limits have been
exceeded (very hard material).
▶ Use a more powerful system,
e.g. DX 76 (PTR).
Driving power is too high. ▶ Reduce driving power (adjust
the power regulating wheel).
▶ Use a less powerful cartridge.
▶ Use the nails with a "top hat".
▶ Use the nails with a washer.
The fastener is driven too
deep.
Driving power is too high. ▶ Reduce driving power (adjust
the power regulation wheel).
▶ Use a less powerful cartridge.
7.3 Problems with the cartridges
Malfunction Possible cause Action to be taken
The cartridge strip doesn’t
advance.
The cartridge strip is damaged. ▶ Change the cartridge strip.
The tool has too much built-up dirt
and residues.
▶ Service the tool.
▶ If necessary, have the tool
checked by Hilti Service.
The tool is damaged. ▶ If the problem persists, contact
Hilti Service.
Printed: 02.08.2018 | Doc-Nr: PUB / 5292636 / 000 / 02