Bosch GBH 2-24 DFR Original Instructions Manual page 21

Inserting Drilling Tools without SDS-plus
(see figure G)
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 1.
Firmly hold the retaining ring 17 of the quick
change chuck. Open the tool holder by turning
the front sleeve 16 until the tool can be inserted.
Tightly hold the retaining ring 17 and firmly turn
the front sleeve 16 in the direction of the arrow
until a distinct latching noise can be heard.
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 16 once in the
opposite direction of the arrow. Afterwards, the
tool holder can be closed (tightened) again.
Turn the mode selector switch 10 to the "drill-
ing" position.
Removing Drilling Tools without SDS-plus
(see figure H)
Firmly hold the retaining ring 17 of the quick
change chuck. Open the tool holder by turning
the front sleeve 16 in the direction of the arrow
until the tool can be removed.
Dust Extraction with the Dust Extraction
Attachment (Accessory)
Mounting the Dust Extraction Attachment
(see figure I)
For dust extraction, the dust extraction attach-
ment (accessory) is required. When drilling, the
dust extraction attachment retracts so that the
attachment head is always close to the surface
at the drill hole.
Press the button for depth stop adjustment 11
and remove the depth stop 12. Press button 11
again and insert the dust extraction attachment
into the auxiliary handle 13 from the front.
Bosch Power Tools
Connect an extraction hose (diameter 19 mm,
accessory) to the extraction sleeve 18 of the
dust extraction attachment.
The vacuum cleaner must be suitable for the ma-
terial being worked.
When vacuuming dry dust that is especially det-
rimental to health or carcinogenic, use a special
vacuum cleaner.
Adjusting the Drilling Depth on the Dust
Extraction Attachment (see figure J)
The required drilling depth X can also be adjust-
ed when the dust extraction attachment is
mounted.
Insert the SDS-plus drilling tool to the stop into
the SDS-plus tool holder 3. Otherwise, the mov-
ability of the SDS-plus drilling tool can lead to
incorrect adjustment of the drilling depth.
Loosen the wing bolt 22 on the dust extraction
attachment.
Without switching the power tool on, apply it
firmly to the drilling location. The SDS-plus drill-
ing tool must face against the surface.
Position the the guide pipe 23 of the dust ex-
traction attachment in its holding fixture in such
a manner that the head of the dust extraction at-
tachment faces against the surface to be drilled.
Do not slide the guide pipe 23 further over the
telescopic pipe 21 of the dust extraction attach-
ment than required, so that as much as possible
of the scale 21 on the telescopic pipe remains
visible.
Retighten the wing bolt 22 again. Loosen the
clamping screw 19 on the depth stop of the dust
extraction attachment.
Move the depth stop 20 on the telescopic pipe
21 in such a manner that the clearance X shown
in the figure corresponds with the required drill-
ing depth.
Tighten the clamping screw 19 in this position.
English | 21
1 619 929 739 | (2.8.07)