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Trouble or fault
The tool cuts out while run-
ning.
No hammering action.
Combihammer does not
achieve full power.
The drill bit does not rotate.
The drill bit is stuck (not free
to rotate).
The drill bit cannot be re-
leased.
9 Disposal
Most of the materials from which Hilti tools and appliances are manufactured can be recycled. The
materials must be correctly separated before they can be recycled. In many countries, your old tools,
machines or appliances can be returned to Hilti for recycling. Ask Hilti Service or your Hilti representative
for further information.
▶ Disposal of electric tools or appliances together with household waste is not permissible.
10 Manufacturer's warranty
▶ Please contact your local Hilti representative if you have questions about the warranty conditions.
Printed: 27.06.2017 | Doc-Nr: PUB / 5151646 / 000 / 05
Possible cause
The overheating prevention cut-out
has been activated.
ATC has been triggered.
The tool is too cold.
The function selector switch is set
to "Rotary drilling only"
Contact pressure too low.
The gauge (cross section) of the
extension cord conductors is inad-
equate.
The control switch is not fully
pressed.
The tool has been set to reverse
rotation.
Voltage from generator is too low.
The function selector switch is not
engaged or is in the
"Chiseling"
or
"Chisel adjustment" position.
The drill bit is stuck in the hole.
The chuck is not pulled back fully.
Action to be taken
▶ Allow the tool to cool down.
Clean the air vents. Running
under no load is still possible.
▶ Release the control switch and
then press it again.
▶ Bring the tip of the drill bit
into contact with the working
surface, switch the rotary
hammer on and allow it to
run. If necessary, repeat the
procedure until the hammering
mechanism begins to operate.
▶ Set the function selector switch
.
to the "Hammer drilling" position
.
▶ Press harder to increase contact
pressure so that hammer
mechanism cuts in.
▶ Use an extension cord with
an adequate conductor cross
section.
▶ Press the control switch as far
as it will go.
▶ Set the tool to forward rotation.
▶ Make sure that voltage rating of
electricity supply is correct.
▶ Set the function selector switch
to "Drilling without hammering"
or "Hammer drilling"
▶ Release the switch, hold the
power tool securely, and then
switch the tool on again.
▶ Pull the chuck back as far
as it will go and remove the
accessory tool.
.
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