Bosch GBH 4-32 DFR Professional Original Operating Instructions page 10

OBJ_BUCH-411-001.book Page 10 Friday, July 13, 2007 8:09 AM
10 | English
After removing, protect the tool holder 1 or the
keyless replacement chuck 12 against contami-
nation. Lightly lubricate the engaging grooves, if
required.
Mounting the SDS-plus Tool Holder or the Key-
less Replacement Chuck
Grasp the tool holder 1 or the keyless replace-
ment chuck 12 completely with your hand. Slide
the tool holder 1 or the keyless replacement
chuck 12 with a turning motion onto the drill
chuck mounting until a distinct latching noice is
heard.
The tool holder 1 or the keyless replacement
chuck 12 is automatically locked. Check the lock-
ing effect by pulling the tool holder.
Changing the Tool
With the SDS-plus tool holder, simple and conve-
nient tool changing is possible without additional
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 effect
on the accuracy of the drill hole, as the drill bit
centers 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 service.
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.
1 619 929 755 | (13.7.07)
Inserting Drilling Tools without SDS-plus
(see figure E)
Note: Do not use tools without SDS-plus for ham-
mer drilling or chiseling! Tools without SDS-plus
and their drill chucks are damaged by hammer
drilling or chiseling.
Insert the quick change keyless chuck 12.
Firmly hold the retaining ring of the keyless re-
placement chuck 12. Open the keyless replace-
ment chuck by turning the front sleeve in the di-
rection of the symbol "
Insert the drilling tool into the keyless replace-
ment chuck 12. Firmly hold the retaining ring of
the keyless replacement 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 5 to the "Drilling"
position.
Removing Drilling Tools without SDS-plus
(see figure E)
Firmly hold the retaining ring of the keyless re-
placement chuck 12. Open the keyless replace-
ment chuck by turning the front sleeve in the di-
rection of the symbol "
Remove the drilling tool.
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.
".
".
Bosch Power Tools