32 English 2232121
*2232121*
Malfunction Possible cause Action to be taken
The piston jams in the fas-
tener guide
The piston and/or buffer are dam-
aged.
▶ Unscrew the magazine, check
the piston and buffer and
replace if necessary.
Plastic fragments in the magazine. ▶ Open the magazine, remove the
nail strip and plastic fragments.
Too much driving energy ▶ Turn the selector ring for driving
energy to reduce driving energy.
Piston bent because tool fired
without fastener
▶ Avoid firing the tool without a
fastener loaded.
▶ Check the straightness of the
piston; replace if necessary.
The fastener guide in the
magazine jams
The magazine is damaged. ▶ Replace the magazine.
9.1 Problems with fasteners
Malfunction Possible cause Action to be taken
Fastener driving depth varies
Incorrect piston position ▶ Remove the cartridge strip and
service the tool.
▶ Check the piston and buffer and
replace if necessary.
Excessive build-up of foreign mat-
ter on the fastening tool.
▶ Clean the fastening tool.
▶ If necessary, have the fastening
tool checked by Hilti Service.
Piston bounce because driving
energy is too high.
▶ Turn the selector ring for driving
energy to reduce driving energy.
The fastener bends
Hard material (steel, concrete). ▶ Turn the selector ring for driving
energy to increase driving
energy.
▶ Use a shorter nail.
▶ Use a nail with a higher
application limit.
▶ For concrete: Use the DX-Kwik
method (predrilling) → see the
'Direct Fastening Technology
Manual'.
Hard and/or large aggregates in
the concrete.
▶
Use the DX-Kwik method
(predrilling).
A rebar is located just below the
concrete surface.
▶ Drive the fastener at a different
position.
The fastener is not driven
flush
Wrong fastener. ▶ Match the length of the fastener
to the thickness of the compo-
nent.
Wrong power setting. ▶ Change the energy setting on
the fastening tool.
Hard and/or large aggregates in
the concrete.
▶ Use the DX-Kwik method
(predrilling).
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