Mounting the Drill Chuck
Hold the drill spindle 1 in place on the wrench flats 2
using a suitable open end wrench and screw the key-
type chuck 14 or the keyless chuck 15 onto the drill
spindle 1 (see Fig.
).
B
The drill chuck must be tightened with a torque of
approx. 20–25 Nm.
Take care that the drill chuck is firmly seated on the
drill spindle.
Replacing the Key-type Chuck
Danger of injury! Remove the tool bit in
all cases before dismounting the drill
chuck.
Caution! Tool bits can become hot when
the tool is operated for a longer time.
Use protective gloves.
Hold the drill spindle 1 in place on the wrench flats 2
using a suitable open end wrench. Insert the chuck
key 11 into one of the three holes in the key-type
Bit Replacement
Key-Type Chuck
Attaching the Tool bit
Rotate the sleeve 10 of the key-type chuck 14 coun-
terclockwise until the chuck jaws 13 are open wide
enough. Insert the tool bit 12 into the center of the
chuck jaws 13 and clamp it by using the chuck key 11
equally in all three holes.
Removing the Tool bit
Caution! Tool bits can become hot when
the tool is operated for a longer time.
Use protective gloves.
Rotate the sleeve 10 of the key-type chuck 14 coun-
terclockwise using the chuck key 11 until the tool bit
12 can be removed from the chuck jaws 13.
Bit Replacement
Keyless Chuck
Attaching the Tool bit
Hold the inner sleeve 8 of the keyless chuck 15 in
place and open the chuck jaws 13 by rotating the out-
er sleeve 9 until the tool bit 12 can be inserted. To
clamp the tool bit 12, hold the inner sleeve 8 in place
and apply force to rotate the outer sleeve 9.
3 609 929 937 • (03.10) T
5 OPERATING INSTRUCTIONS
English–6
chuck 14 and use this lever to loosen the chuck like a
screw by turning it counterclockwise. You can loosen
a chuck that is stuck by using a hex wrench in the
chuck jaws 13 to apply a counterforce.
Replacing the Keyless Chuck
Danger of injury! Remove the tool bit in
all cases before dismounting the drill
chuck.
Caution! Tool bits can become hot when
the tool is operated for a longer time.
Use protective gloves.
Lay the tool on a fixed support (e.g., workbench). Hold
the drill spindle 1 in place on the wrench flats 2 using
a suitable open end wrench and loosen the keyless
chuck 15 from the drill spindle by turning it counter-
clockwise. You can loosen a chuck that is stuck by
using a hex wrench in the chuck jaws 13 to apply a
counterforce.
Removing the Tool bit
Caution! Tool bits can become hot when
the tool is operated for a longer time.
Use protective gloves.
Hold the inner sleeve 8 of the keyless chuck 15 in
place and open the chuck jaws 13 by rotating the out-
er sleeve 9 until the tool bit 12 can be removed.
Putting into Operation
The air tool operates optimally with a pressure of
6.3 bar (91 psi) measured at the air inlet with the tool
running.
Remove adjusting keys before turning the tool
on. A key that is left attached to a rotating part of the
tool may result in personal injury.
Switching On/Off
If the tool does not run – for example, after not being
used for a prolonged time – disconnect the air supply
and turn the motor repeatedly using a suitable open
end wrench 21 on the wrench flats 2 (see Fig.
This eliminates adhesive forces.
Switching on: Press the on/off switch 3.
Switching off: Release the on/off switch 3.
).
B