Bosch GBH 2-26 E Operating Instructions Manual page 10

OBJ_BUCH-316-001.book Page 10 Tuesday, February 20, 2007 9:52 AM
Changing the Tool
The dust protection cap 4 largely prevents the entry of
drilling dust into the tool holder during operation. When
inserting the tool, take care that the dust protection
cap 4 is not damaged.
A damaged dust protection cap should be
changed immediately. We recommend having
this carried out by an after-sales service.
Inserting SDS-plus Drilling Tools (see figure F)
The SDS-plus drill chuck allows for simple and conve-
nient changing of drilling tools without the use of addi-
tional tools.
GBH 2-26 DFR: Insert the SDS-plus quick change
chuck 2.
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 centers itself upon drilling.
Removing SDS-plus Drilling Tools (see figure G)
Push back the locking sleeve 5 and remove the tool.
Inserting Drilling Tools without SDS-plus
(GBH 2-26 E/RE/DE/DRE)
Note: Do not use tools without SDS-plus for hammer
drilling or chiseling! Tools without SDS-plus and their
drill chucks are damaged by hammer drilling or chiseling.
Insert a key type drill chuck 16 (see "Changing the Key
Type Drill Chuck", page 9).
Open the key-type drill chuck 16 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 16 and clamp the tool uniformly.
Turn the mode selector switch 11 to the "Drilling" posi-
tion.
Removing Drilling Tools without SDS-plus
(GBH 2-26 E/RE/DE/DRE)
Turn the sleeve of the key type drill chuck 16 with the
drill chuck key in anticlockwise direction until the drill-
ing tool can be removed.
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Inserting Drilling Tools without SDS-plus
(GBH 2-26 DFR) (see figure H)
Note: Do not use tools without SDS-plus for hammer
drilling or chiseling! Tools without SDS-plus and their
drill chucks are damaged by hammer drilling or chiseling.
Insert the quick change keyless chuck 1.
Firmly hold the retaining ring 20 of the quick change
chuck. Open the tool holder by turning the front sleeve
19 until the tool can be inserted. Tightly hold the retain-
ing ring 20 and firmly turn the front sleeve 19 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 19 once in the oppo-
site direction of the arrow. Afterwards, the tool holder
can be closed (tightened) again.
Turn the mode selector switch 11 to the "Drilling" posi-
tion.
Removing Drilling Tools without SDS-plus
(GBH 2-26 DFR) (see figure I)
Firmly hold the retaining ring 20 of the quick change
chuck. Open the tool holder by turning the front sleeve
19 in the direction of the arrow until the tool can be
removed.
Dust Extraction with the Dust Extrac-
tion Attachment (Accessory)
Mounting the Dust Extraction Attachment
(see figure J)
For dust extraction, the dust extraction attachment
(accessory) is required. When drilling, the dust extrac-
tion attachment retracts so that the attachment head is
always close to the surface at the drill hole.
Press the button for depth stop adjustment 12 and
remove the depth stop 13. Press button 12 again and
insert the dust extraction attachment into the auxiliary
handle 14 from the front.
Connect an extraction hose (diameter 19 mm, acces-
sory) to the extraction sleeve 21 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.
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