Bosch GBH 2-23 REA Professional Instructions D'emploi page 18

OBJ_BUCH-351-001.book Page 17 Friday, May 11, 2007 4:07 PM
Assembly
Before any work on the machine itself, pull
the mains plug.
Auxiliary Handle
Operate your machine only with the auxiliary
handle 12.
Rotating the Auxiliary Handle (see figure A)
The auxiliary handle 12 can be set to any position for a
secure and low-fatigue working posture.
Turn the bottom part of the auxiliary handle 12 in coun-
terclockwise direction and swivel the auxiliary handle
12 to the desired position. Then retighten the bottom
part of the auxiliary handle 12 by turning in clockwise
direction.
Selecting Drill Chucks and Tools
For hammer drilling and chiselling (chiselling only with
MV 200 accessory), SDS-plus tools are required that
are inserted in the SDS-plus drill chuck.
For drilling without impact in wood, metal, ceramic and
plastic as well as for screwdriving and thread cutting,
tools without SDS-plus are used (e.g., drills with cylin-
drical shank). For these tools, a keyless chuck or a key
type drill chuck are required.
Changing the Key Type Drill Chuck
To work with tools without SDS-plus (e.g., drills with
cylindrical shank), a suitable drill chuck must be
mounted (key type drill chuck or keyless chuck, acces-
sories).
Mounting the Key Type Drill Chuck (see figure B)
Screw the SDS-plus adapter shank 20 into a key type
drill chuck 19. Secure the key type drill chuck 19 with
the securing screw 18. Please observe that the
securing screw has a left-hand thread.
Inserting the Key Type Drill Chuck (see figure C)
Clean the shank end of the adapter shank and apply a
light coat of grease.
Insert the key type drill chuck with the adapter shank
into the tool holder with a turning motion until it auto-
matically locks.
Check the locking effect by pulling the key type drill
chuck.
Removing the Key Type Drill Chuck
Push the locking sleeve 3 toward the rear and pull out
the key type drill chuck 19.
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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 having
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 conven-
ient changing of drilling tools without the use of addi-
tional 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 chisel-
ling.
Insert a key type drill chuck 19 (see "Changing the Key
Type Drill Chuck", page 17).
Open the key type drill chuck 19 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 19 and clamp the tool uniformly.
Set the selector switch 4 to the "Drilling" symbol.
Removing Drilling Tools without SDS-plus
Turn the sleeve of the key type drill chuck 19 with the
drill chuck key in anticlockwise direction until the drill-
ing tool can be removed.
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