Care And Maintenance; Troubleshooting - Hilti UD 16 Operating Instructions Manual

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  • ENGLISH, page 19
7.3.2 Removing the key chuck 12
1.
Insert a short length of hexagonal steel in the chuck
and then tighten the chuck jaws until the hexagonal
steel is held securely (use the chuck key).
2.
Grip the flat section of the drive spindle with a 17
mm AF open-end wrench.
3.
Grip the hexagonal steel with a suitable wrench.
4.
Turn the 17 mm AF open-end wrench in a counter-
clockwise direction.
The key chuck will be unscrewed from the drive
spindle.
7.3.3 Fitting the keyless chuck
1.
Screw the keyless chuck onto the drive spindle by
hand as far as it will go.

8 Care and maintenance

CAUTION
Ensure that the power tool is disconnected from the
electric supply.
8.1 Care of insert tools
Clean off dirt and dust deposits adhering to the insert
tools and protect them from corrosion by wiping the
insert tools from time to time with an oil-soaked rag.
8.2 Care of the power tool
CAUTION
Keep the power tool, especially its grip surfaces,
clean and free from oil and grease. Do not use clean-
ing agents which contain silicone.
Never operate the power tool when the ventilation slots
are blocked. Clean the ventilation slots carefully using
a dry brush. Do not permit foreign objects to enter the
interior of the power tool. Clean the outside of the power
tool at regular intervals with a slightly damp cloth. Do

9 Troubleshooting

Fault
The power tool doesn't start.
The power tool doesn't achieve
full power.
2.
3.
4.
7.3.4 Fitting the key chuck
1.
2.
3.
4.
5.
not use a spray, steam pressure cleaning equipment or
running water for cleaning. This may negatively affect the
electrical safety of the power tool.
8.3 Maintenance
WARNING
Repairs to the electrical section of the power tool may
be carried out only by trained electrical specialists.
Check all external parts of the power tool for damage
at regular intervals and check that all controls operate
faultlessly. Do not operate the power tool if parts are
damaged or when the controls do not function faultlessly.
If necessary, the power tool should be repaired by Hilti
Service.
8.4 Checking the power tool after care and
After carrying out care and maintenance work on the
power tool, check that all protective and safety devices
are fitted and that they function faultlessly.
Possible cause
Interruption in the electric supply.
The supply cord or plug is defective.
The control switch is defective.
The extension cord is too long or its
gauge is inadequate.
Grip the flat section of the drive spindle with a 17
mm AF open-end wrench.
Grip the hexagonal section of the keyless chuck with
a 19 mm AF ring or open-end wrench.
Tighten the chuck to the specified torque (see tech-
nical data).
Insert a short length of hexagonal steel in the chuck
and then tighten the chuck jaws until the hexagonal
steel is held securely (use the chuck key).
Screw the key chuck onto the drive spindle by hand
as far as it will go.
Grip the flat section of the drive spindle with a 17
mm AF open-end wrench.
Grip the hexagonal steel with a suitable wrench.
Tighten the chuck to the specified torque (see tech-
nical data).
maintenance
Remedy
Plug in another electric appliance and
check whether it works.
Have it checked by a trained electrical
specialist and replaced if necessary.
Have it checked by a trained electrical
specialist and replaced if necessary.
Use an extension cord of an
approved length and / or of adequate
gauge.
en
25

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