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KNOWING ESSENTIAL FIELD TROUBLE SHOOTING
POSSIBLE CAUSES CARTRIDGES
There are few instances the tool ceases to function on the jobsite. We identify below problems the customer may encounter,
their possible causes and the recommended actions. Tool lifetime can be extended and higher tool performance can be achie-
ved when the tool is cleaned and checked at regular intervals.
Problem
Cartridges are not
transported
Cartridge Strip can't
be removed
Cartridge doesn't fire
If a cartridge fails to fire or misfires, always
proceed as follows:
Keep the nose of the tool pressed at right
angles against the working surface for 30
seconds. If the cartridge still fails to fire, lift
the tool away from the working surface, taking
care to avoid pointing it at yourself or other
persons. Load the next cartridge on the strip
by cycling the tool. Use up the remaining
cartridges on the strip and remove the used
cartridge strip from the tool. The (partly)
used cartridge strip must then be disposed
of suitably in order to prevent further use or
misuse of any unfired cartridges.
The tool remains
compressed (doesn't
extend when pressure
is released)
The tool can't be fired
Stiff cycling action
Possible causes
The cartridge strip is damaged
The tool is damaged
The tool is damaged or has over-
heated as a result of an excessively
high fastener driving rate
The tool is not fully pressed against
the working surface
The cartridge strip is used up
The magazine or fastener guide is
not screwed on far enough
One of the cartridges is faulty
The tool is defective or the
cartridges are faulty
The tool is not cycled
The piston sticks in the piston
stopper/ brake
The tool is dirty
The cartridge strip has jammed,
the tool has overheated
The tool wasn't cycled correctly,
the cycling grip is not in the starting
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 is badly fouled with dirt and
residues
The tool needs to be cleaned
Recommended action
Change the cartridge strip
Send DX 76 Tool to Hilti Tool Service Center
Allow tool to cool, then carefully try to remove the
cartridge strip. Remove the piston guide from the
tool, if cartridge sleeve remains jammed in the
chamber, use the round rod from the cleaning set to
remove it – if not possible, contact Hilti
Press the tool fully against the working surface and
pull the trigger
Remove the used cartridge strip, load a new strip
Screw the magazine farther onto the tool
Cycle the tool and use up the remaining cartridges
Contact Hilti
Cycle the tool – section cleaning the piston guide
Change the piston and piston stopper/brake
Clean the piston guide, check the straightness of the
piston
Please refer to the fault: "cartridge strip can't be re-
moved". Do not exceed the maximum recommended
fastener driving rate
Cycle the tool fully against the working surface and
then pull the trigger
Press the tool fully against the working surface and
then pull the trigger
Loading fastener strips in the magazine and remo-
ving fastener strips from the tool – See page 9
Screw the magazine farther onto the tool
Contact Hilti
Clean the piston guide, check the straightness of the
piston
See page 9
11
INDEX
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