Hilti GX 3 Original Operating Instructions page 16

Malfunction
Fasteners bend.
Fasteners do not hold in steel
base material.
The content of the gas can is
inadequate for the number of
fasteners in the package.
The tool remains compressed
(nose does not extend when
pressure is released).
Fastener driving failure rate is
too high.
No fastener is driven.
12 English
Printed: 28.09.2017 | Doc-Nr: PUB / 5261680 / 000 / 01
Possible cause
Driving power is too low.
The fasteners are too long.
The fastener guide is not held per-
pendicular to the working surface.
The supporting material is too thin.
High gas consumption due to fre-
quent compression of the tool
nosepiece without driving a fas-
tener.
Incorrect piston position.
The nail detector is jammed and
the RESET button is not flush with
the casing when pressed.
A fastener has jammed in the fas-
tener magazine.
A nail is jammed under the lever
ahead of the piston face.
The fastener magazine is not held
perpendicular to the working sur-
face.
Wrong type of fastener used.
The supporting material is too
hard.
The nail pusher was not moved
forward.
Insufficient nails in the magazine (2
nails or fewer).
Nail transport malfunction.
Gas can is empty.
LED 1 lights red
Air in the gas lines
Action to be taken
▶ Move the fastener driving depth
adjustment slider to the +
position.
▶ Use shorter fasteners.
▶ Press the nosepiece against
the working surface, keeping
the tool perpendicular to the
surface.
▶ Use a different fastening
method.
▶ Avoid compressing the tool
nosepiece without driving a
fastener.
▶ Remedy the incorrect piston
position. → page 10
▶ Remove foreign objects and
nails from the area around the
fastener guide. → page 10
▶ Release the jammed fastener.
▶ Remove the gas can, press
the tool nosepeice against the
working surface and pull the
trigger firmly.
▶ Press the nosepiece against the
working surface, keeping the
fastener guide perpendicular to
the surface.
▶ Use a suitable type of fastener.
▶ Consider using a DX fastening
tool.
▶ Release the nail pusher and
guide it forward as far as it will
go.
▶ Load the magazine. → page 6
▶ Use a different nail strip.
▶ Clean the magazine.
▶ Check the status of the gas can.
→ page 9
▶ Check the status of the gas can.
→ page 9
▶ Press the setting tool three
times in position without pulling
the trigger.