Hilti DX 76-PTR Bedienungsanleitung Seite 36

Fault
Fastener stand-off (head pro-
jection) varies considerably.
h
en
Shear breakage.
The tool remains compressed
(doesn't extend when pres-
sure is released).
The tool can't be fired.
No fastener is driven.
36
Possible cause
The tool was pressed against the
working surface with a jolt.
The tool is cycled unevenly, some-
times not fully.
h
Irregular driving power.
The face of the piston is worn or
chipped.
Fastener driven into the rib of the
beam.
The tool is pressed against the
working surface at an angle.
Supporting material is too thick, or
the thickness has changed.
The piston is sticking in the piston
brake.
The tool needs to be cleaned.
The cartridge strip has jammed, the
tool has overheated.
The tool wasn't cycled correctly,
the cycling grip is not in the start-
ing position.
The trigger is pulled before the tool
is pressed fully against the working
surface.
Fastener transport malfunctions
The magazine or fastener guide is
not screwed on far enough.
The tool is damaged.
The tool wasn't cycled correctly,
the cycling grip is not in the start-
ing position.
Remedy
Press the tool against the working
surface smoothly and avoid jolting.
Cycle the tool fully.
Clean the tool. Replace wearing
parts with new parts. Contact Hilti
if irregular driving power is still
experienced.
Change the piston and piston
brake.
Drive a second fastener beside the
first one.
Press the tool against the working
surface at right angles.
Check that the recommended type
of fastener is used. If the right type
of fastener is used, increase driving
power in accordance with cartridge
recommendations or use a more
powerful cartridge.
Change the piston and piston
brake.
See section: 7.4.1 Disassembly 9
See section: 7.4.2 Assembly 10
See section: 8.2.2 Cleaning the
piston guide 9 19 20 21 22
Please refer to the fault: "Cartridge
strip can't be removed". Do not ex-
ceed the maximum recommended
fastener driving rate.
Cycle the tool completely and re-
turn the cycling grip to the starting
position.
Press the tool fully against the
working surface and then pull the
trigger.
See section: 7.2.1 Loading fastener
strips in the magazine 2
See section: 7.3.2 Removing
fastener strips from the tool 8
Screw the magazine farther onto
the tool.
Contact Hilti.
Cycle the tool completely and re-
turn the cycling grip to the starting
position.