Troubleshooting - Hilti DX 5 Operating Instructions Manual

6.11 Assembling the magazine tool
1. Check whether there is a cartridge in the tool, and remove it if there is.
2. Fit the exhaust gas piston return unit.
3. Fit the piston.
4. Fit the buffer onto the fastener guide.
5. Screw on the fastener guide.
6.12 Final check of the tool
1. After carrying out care and maintenance work, check that all safety devices are fitted and that they are
functioning correctly.
2. After checking the tool, press and hold the pushbutton for 10 - 12 seconds to reset the maintenance
counter.

7 Troubleshooting

7.1 Problems with the tool
Malfunction
The piston gets stuck in the
base material.
Higher force required to press
the tool against the surface.
Trigger resistance increases.
Stiff movement of power reg-
ulation wheel.
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.
Printed: 29.09.2017 | Doc-Nr: PUB / 5292546 / 000 / 02
16
Possible cause
The fastener is too short.
The fastener has no washer.
Driving power is too high.
Build-up of combustion residues.
Build-up of combustion residues.
Build-up of combustion residues.
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.
Action to be taken
▶ Use a longer fastener.
▶ Use a fastener with washer for
applications on wood.
▶ 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.
▶ Service the tool.
▶ Service the tool.
▶ Service the tool.
▶ 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.
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