Bosch GBM 13-2 RE Professional Original Instructions Manual page 8

8 | English
Note: When using small drill bits, adjust the tool holder to
the rough drilling diameter first. Otherwise, there is a risk
that the drill bit will not be centred properly.
Removing the application tool
Turn the securing ring (19) in the "UNLOCK" direction.
Turn the clamping sleeve (18) clockwise until the applica-
tion tool can be removed.
Screwdriving Tools (see figure E)
You should always use a universal bit holder (15) when using
screwdriver bits (14). Only use screwdriver bits that fit the
screw head.
Changing the drill chuck
Pull the plug out of the socket before carrying out any
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work on the power tool.
Removing the securing screw
A securing screw (16) protects the keyless chuck (1)/keyed
chuck (13) from being accidentally separated from the drill
spindle. Open the keyless chuck (1)/keyed chuck (13) fully
and unscrew the securing screw (16) clockwise. Note that
the securing screw has a left-hand thread.
If the securing screw (17) is stuck, place a screwdriver on
the screw head and loosen the securing screw by hitting the
handle of the screwdriver.
Removing the keyed chuck (see figure F)
To remove the keyed chuck (13), place an open-ended
spanner (17) (width across flats: 17) onto the spanner flat
of the drive spindle.
Place the power tool on a firm surface, e.g. a work bench.
Insert the chuck key (12) into one of the three drilled holes
in the keyed chuck (13) and loosen the keyed chuck (13) us-
ing this lever by turning it anticlockwise. A stuck keyed chuck
can be loosened by gently hitting the chuck key (12).
Remove the chuck key (12) from the keyed chuck and fully
unscrew and remove the keyed chuck.
Dismounting the keyless chuck/keyless chuck with
securing ring
To remove the keyless chuck (1) and the keyless chuck with
securing ring, clamp a hex key in the keyless chuck and posi-
tion an open-ended spanner (17) (width across flats: 17)
against the spanner flat of the drive spindle.
Place the power tool on a firm surface, e.g. a work bench.
Hold the open-ended spanner (17) tightly and loosen the
keyless chuck by turning the hex key anticlockwise. A stuck
keyless chuck can be loosened by gently hitting the long
shaft of the hex key.
Remove the hex key from the keyless chuck (1) and fully un-
screw the keyless chuck (1) from the power tool.
Fitting the drill chuck
The fitting of the keyless chuck/keyless chuck with securing
ring/keyed chuck takes place in reverse order.
The drill chuck must be tightened using a tight-
ening torque of approx. 50–55 Nm.
160992A68G | (21.07.2021)
For keyless/keyed chucks
Screw the securing screw (16) anticlockwise into the open
keyless/keyed chuck.
Always use a new securing screw, as their thread is applied
with a securing adhesive substance, which is rendered inef-
fective after several uses.
Dust/Chip Extraction
Dust from materials such as lead-containing coatings, some
wood types, minerals and metal can be harmful to one's
health. Touching or breathing-in the dust can cause allergic
reactions and/or lead to respiratory infections of the user or
bystanders.
Certain dust, such as oak or beech dust, is considered carci-
nogenic, especially in connection with wood-treatment ad-
ditives (chromate, wood preservative). Materials containing
asbestos may only be worked by specialists.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the ma-
terials to be worked.
Avoid dust accumulation at the workplace. Dust can
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easily ignite.
Operation
Starting Operation
Pay attention to the mains voltage. The voltage of the
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power source must match the voltage specified on the
rating plate of the power tool. Power tools marked
with 230 V can also be operated with 220 V.
Products that are only sold in AUS and NZ: Use a resid-
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ual current device (RCD) with a nominal residual current
of 30 mA or less.
Setting the rotational direction
The rotational direction switch (7) is used to change the ro-
tational direction of the power tool. However, this is not pos-
sible while the on/off switch (6) is being pressed.
Right rotation: To drill and to drive in screws, press the ro-
tational direction switch (7) through to the right stop.
Left rotation: To loosen and unscrew screws and nuts,
press the rotational direction switch (7) through to the left
stop.
Mechanical Gear Selection
You can press the gear selector switch (8) with the
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power tool off or on. You should not do this at full load
or maximum torque, however.
Gear I:
Low speed range; for working with a large drilling diameter
or for screwdriving.
Gear II:
High speed range; for working with a small drilling diameter.
If the gear selector (8) cannot be swivelled all the way to the
stop, turn the drive spindle slightly with the drill.
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