Bosch Professional GBH 2 S Manual Original página 20

20 | English
Changing the Tool
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 service.
Inserting SDS-plus Drilling Tools (see figure D)
The SDS-plus drill chuck allows for simple and
convenient changing of drilling tools without the
use of additional tools.
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.
As a requirement of the system, the SDS-plus
drilling tool can move freely. This causes a
certain radial run-out at no-load, which has no
effect on the accuracy of the drill hole, as the
drill bit centres itself upon drilling.
Removing SDS-plus Drilling Tools (see figure E)
Push back the locking sleeve 3 and remove the
tool.
Inserting Drilling Tools without SDS-plus
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 a key type drill chuck 13 (see "Changing
the Key Type Drill Chuck", page 19).
Open the key type drill chuck 13 by turning until
the tool can be inserted. Insert the tool.
Insert the chuck key into the corresponding
holes of the key type drill chuck 13 and clamp
the tool uniformly.
Set the selector switch 7 to the "Drilling" symbol.
Removing Drilling Tools without SDS-plus
Turn the sleeve of the key type drill chuck 13
with the drill chuck key in anticlockwise direc-
tion until the drilling tool can be removed.
1 619 929 793 | (29.8.07)
Dust Extraction with the Dust
Extraction Attachment (Accessory)
Mounting the Dust Extraction Attachment
(see figure F)
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 8
and remove the depth stop 9. Press button 8
again and insert the dust extraction attachment
into the auxiliary handle 10 from the front.
Connect an extraction hose (diameter 19 mm,
accessory) to the extraction sleeve 15 of the
dust extraction attachment.
The vacuum cleaner must be suitable for the
material being worked.
When vacuuming dry dust that is especially
detrimental to health or carcinogenic, use a
special vacuum cleaner.
Adjusting the Drilling Depth on the Dust
Extraction Attachment (see figure G)
The required drilling depth X can also be ad-
justed when the dust extraction attachment is
mounted.
Insert the SDS-plus drilling tool to the stop into
the SDS-plus tool holder 1. Otherwise, the mov-
ability of the SDS-plus drilling tool can lead to
incorrect adjustment of the drilling depth.
Loosen the wing bolt 19 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 20 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 20 further over the
telescopic pipe 18 of the dust extraction attach-
ment than required, so that as much as possible
of the scale 18 on the telescopic pipe remains
visible.
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