Hilti TE 1 Mode D'emploi page 20

Fitting / removing the accessory tool
Note
Use of unsuitable grease may cause damage to the product. Use only the
recommended grease supplied by Hilti.
Adjusting the depth gauge
Note
Always pay attention to the maximum length of the depth gauge.
Setting forward or reverse rotation
Note
Do not operate the forward / reverse switch while the motor is running.
6 Care of the product
WARNING
Electrical hazards! Improper repairs to electrical parts may lead to serious injuries.
▶ Electrical parts may be repaired only by trained electrical specialists.
▶ Keep the product, especially its grip surfaces, clean and free from oil and grease. Do not use
cleaning agents containing silicone.
▶ Never operate the product when the air vents are blocked. Clean the air vents carefully using a dry brush.
Do not allow foreign objects to enter the interior of the product.
▶ Clean the outside of the electric tool at regular intervals with a slightly damp cloth. Do not use a spray,
steam pressure cleaning equipment or running water for cleaning.
▶ Clean the dust shield on the chuck with a dry, clean cloth at regular intervals. Clean the sealing lip by
wiping it carefully and then grease it again lightly with Hilti grease. It is essential that the dust shield is
replaced if the sealing lip is damaged.
6.1 Replacing the dust shield
▶ Replace the dust shield.
7 Troubleshooting
If the trouble you are experiencing is not listed in this table or you are unable to remedy the problem by
yourself, please contact Hilti Service.
Trouble or fault
The power tool doesn't start.
No hammering action.
The rotary hammer doesn't
achieve full power.
The drill bit cannot be re-
leased.
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Possible cause
Interruption in the electric supply.
The carbon brushes are worn out.
The power tool is too cold.
The gauge (cross section) of the
extension cord conductors is inad-
equate.
The chuck is not pulled back fully.
Action to be taken
▶ Plug in another electric tool or
appliance and check whether it
works.
▶ Have the power tool checked by
a trained electrical specialist and
the carbon brushes replaced if
necessary.
▶ 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.
▶ Use an extension cord with
an adequate conductor cross
section.
▶ Pull the chuck back as far
as it will go and remove the
accessory tool.
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