Bosch GBM 10 Operating Instructions Manual page 9

Pull out the depth stop until the distance between the
tip of the drill bit and the tip of the depth stop corre-
spond with the desired drilling depth X.
Retighten the wing bolt for the depth stop adjustment
9 again.
Changing the Tool
Before any work on the machine itself, pull
the mains plug.
Wear protective gloves when changing the
tool. The drill chuck can become very hot during
longer work periods.
Keyless Chuck (see figure B)
Hold the rear sleeve 3 of the keyless chuck 1 tight and
turn the front sleeve 2 in rotation direction
tool can be inserted. Insert the tool.
Hold the rear sleeve 3 of the keyless chuck 1 tight and
firmly tighten the front sleeve 2 by hand in rotation
direction , until the locking action (click) is heard. The
drill chuck is locked automatically.
The locking is released again to remove the tool when
the front sleeve 2 is turned in the opposite direction.
Key Type Drill Chuck (see figure C)
Open the key type drill chuck 14 by turning until the tool
can be inserted. Insert the tool.
Insert the chuck key 13 into the corresponding holes of
the key type drill chuck 14 and clamp the tool uniformly.
Screwdriver Tools (GBM 10 RE/GBM 10-2 RE/
GBM 13-2 RE) (see figure D)
The drill spindle 16 is equipped with a hexagon socket
for use with screwdriver bits. Dismount the drill chuck
and insert the screwdriver bit 15 directly into the drill
spindle 16 where it is retained by a securing ring.
Quick-change Adapter (GBM 10 SRE)
For quick converting from drilling to screwdriving, the
drill chuck can be removed quickly and easily from the
drill spindle without additional tools.
Firmly hold the drill chuck and push the red lock
button toward the front.
Turn the quick-change adapter 19 in the direction
of the arrow shown in the figure and pull it off
toward the front.
18 | English
Replacing the Drill Chuck
Before any work on the machine itself, pull
the mains plug.
Removing the Securing Screw
The keyless chuck 1 as well as the key type drill chuck
14 is secured with a securing screw 17 against unin-
tentional loosening from the drill spindle. Completely
open the keyless chuck 1 or the key type drill chuck 14
and unscrew the securing screw 17 in clockwise direc-
tion. Please note that the securing screw has a
left-hand thread.
If the securing screw 17 is seated tightly, apply a screw-
driver to the screw head and loosen the securing screw
by giving a blow onto the handle of the screwdriver.
Dismounting the Key Type Drill Chuck
, until the
GBM 10-2 RE/GBM 13-2/GBM 13-2 RE
(see figure E): To dismount the key type drill chuck
14, position an open-end spanner 18 (size 17 mm)
against the spanner flats of the drive spindle.
GBM 10 SRE (see figure F): To dismount the key
type drill chuck 14, firmly hold the quick-change
adapter 19.
Place the machine on a firm surface, e. g. a work bench.
Insert the chuck key 13 into one of the three holes of
the key type drill chuck 14 and loosen the key type drill
chuck 14 with this lever by turning in anticlockwise
direction. A tightly seated key type drill chuck is is loos-
ened with a light blow on the chuck key 13. Remove the
chuck key 13 from the key type drill chuck and com-
pletely unscrew it from the machine.
Dismounting the Keyless Chuck
To remove the keyless chuck 1, clamp an Allen key into
the keyless chuck 1 and position the open-end wrench
18 (size 17) against the spanner flats of the drive spin-
dle. Place the machine on a firm surface, e.g. a work-
bench. Hold the open-end wrench 18 firmly and loosen
the keyless chuck 1 by turning the Allen key in anti-
clockwise direction. A tightly sitting keyless chuck is
loosened with a light blow onto the long end of the
Allen key . Remove the Allen key from the keyless chuck
and completely unscrew it from the machine.
Dismounting the Keyless Chuck (GBM 10 SRE)
To dismount the keyless chuck 1, clamp an Allen key
into the keyless chuck 1. Place the machine on a firm
surface, e. g. a work bench. Hold the Allen key firmly
and loosen the keyless chuck 1 by turning the quick-
change adapter 19 in anticlockwise direction. Remove
the Allen key from the keyless chuck and completely
unscrew the keyless chuck.
Mounting the Drill Chuck
The keyless chuck/key type drill chuck is mounted in
reverse order.
The drill chuck must be tightened with a
tightening torque of approx. 15 Nm.
1 609 929 K97 • 25.1.07