Changing The Tool; Starting Operation - Bosch gbh 4 dfe Professional Originalbetriebsanleitung

20 | English
Mounting the SDS-plus Tool Holder or the
Quick change keyless chuck
Turn the locking sleeve 3 in the direction of the
arrow and pull it back at the same time, until the
tool holder 1 or the quick change keyless chuck
12 engages.
The tool holder 1 or the quick change keyless
chuck 12 is automatically locked. Check the
locking effect by pulling the tool holder.

Changing the Tool

With the SDS-plus tool holder, simple and con-
venient tool changing is possible without addi-
tional aids.
As a requirement of the system, the SDS-plus
drilling tool can move freely. This causes a cer-
tain radial run-out at no-load, which has no ef-
fect on the accuracy of the drill hole, as the drill
bit centres itself upon drilling.
The dust protection cap 2 largely prevents the
entry of drilling dust into the tool holder during
operation. When inserting the tool, take care
that the dust protection cap 2 is not damaged.
A damaged dust protection cap should be
changed immediately. We recommend hav-
ing this carried out by an after-sales serv-
ice.
Inserting SDS-plus Drilling Tools (see figure C)
Clean and lightly grease the shank end of the
tool.
Insert the tool in a twisting manner into the tool
holder until it latches itself.
Check the latching by pulling the tool.
Removing SDS-plus Drilling Tools
(see figure D)
Push back the locking sleeve 3 and remove the
tool.
Inserting Drilling Tools without SDS-plus
(see figure E)
Note: Do not use tools without SDS-plus for
hammer drilling or chiselling! Tools without
SDS-plus and their drill chucks are damaged by
hammer drilling or chiselling.
Insert the quick change keyless chuck 12.
1 619 929 748 | (25.7.07)
Firmly hold the retaining ring of the quick
change keyless chuck 12. Open the quick
change keyless chuck by turning the front sleeve
in the direction of the symbol "
Insert the drilling tool into the quick change key-
less chuck 12. Firmly hold the retaining ring of
the quick change keyless chuck 12 and turn the
front sleeve in the direction of the symbol
"
".
Check the tight seating by pulling the tool.
Note: If the tool holder was opened to the stop,
then the latching noise possibly may be heard
while closing the tool holder and the tool holder
will not close.
In this case, turn the front sleeve 13 once in the
opposite direction of the arrow. Afterwards, the
tool holder can be closed (tightened) again.
Turn the mode selector switch 7 to the "drilling"
position.
Removing Drilling Tools without SDS-plus
(see figure E)
Firmly hold the retaining ring of the quick
change keyless chuck 12. Open the quick
change keyless chuck by turning the front sleeve
in the direction of the symbol "
Remove the drilling tool.
Operation

Starting Operation

Observe correct mains voltage! The voltage
of the power source must agree with the
voltage specified on the nameplate of the
machine. Power tools marked with 230 V
can also be operated with 220 V.
Setting the Operating Mode
The operating mode of the power tool is select-
ed with the mode selector switch 7.
Note: Change the operating mode only when the
machine is switched off! Otherwise, the ma-
chine can be damaged.
Press and hold the unlocking button 8 and turn the
mode selector switch 7 to the required position.
".
".
Bosch Power Tools