Starting Operation; Maintenance And Service; Maintenance And Cleaning - Bosch GBM 13 HRE PROFESSIONAL Instructions D'emploi

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OBJ_BUCH-53-002.book Page 14 Friday, January 19, 2007 9:39 AM
Screwdriver Tools (see figure C)
When working with screwdriver bits 7, a universal bit
holder 8 should always be used. Use only screwdriver
bits that fit the screw head.
Replacing the Drill Chuck
(see figures D–F)
Before any work on the machine itself, pull
the mains plug.
The key type drill chuck 1 is secured with a securing
screw 9 against unintentional loosening. Open the drill
chuck 1 completely and unscrew the securing screw 9
by turning in clockwise direction. Please observe
that the securing screw has a left-hand thread.
If the securing screw 9 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.
Removing the Drill Chuck (see figure E)
To remove the key type drill chuck 1, clamp an Allen key
10 into the key type drill chuck 1. Place the machine
onto a stable support, e. g. a workbench. Hold the
machine tightly and loosen the key type drill chuck 1 by
turning the Allen key 10 in anticlockwise direction. A
tightly seated key type drill chuck is loosened by apply-
ing a light blow onto the long end of the Allen key 10.
Remove the Allen key from the key type drill chuck and
fully unscrew the drill chuck.
Mounting the Drill Chuck (see figure F)
The drill type key chuck is mounted in reverse order.
Operation

Starting Operation

Observe correct mains voltage! The voltage of
the power source must agree with the voltage
specified on the nameplate of the machine.
Power tools marked with 230 V can also be
operated with 220 V.
Reversing the Rotational Direction
The rotational direction switch 2 is used to reverse the
rotational direction of the machine. However, this is not
possible with the On/Off switch 3 actuated.
Right Rotation: For drilling and driving in screws,
push the rotational direction switch 2 left to the stop.
Left Rotation: For loosening and unscrewing screws
and nuts, press the rotational direction switch 2
through to the right stop.
14 | English
Switching On and Off
To start the machine, press the On/Off switch 3 and
keep it depressed.
To lock the pressed On/Off switch 3, press the lock-
on button 4.
To switch off the machine, release the On/Off switch
3 or when it is locked with the lock-on button 4, briefly
press the On/Off switch 3 and then release it.
Adjusting the Speed
The speed of the switched on power tool can be varia-
bly adjusted, depending on how far the On/Off switch
3 is pressed.
Light pressure on the On/Off switch 3 results in a low
rotational speed. Further pressure on the switch results
in an increase in speed.
Operating Instructions
Apply the power tool to the screw/nut only
when it is switched off. Rotating tool inserts can
slip off.
For drilling in metal, use only perfectly sharpened HSS
drill bits (HSS=high-speed steel). The appropriate
quality is guaranteed by the Bosch accessories pro-
gram.
Twist drills from 2.5–10 mm can easily be sharpened
with the drill bit sharpener (see accessories).
We recommend the use of a drill stand (see accesso-
ries) for work where greater precision is particularly
required.
The machine vice, which is available as an accessory,
enables secure clamping of workpieces. This prevents
the workpiece from turning and any accidents this
would cause.

Maintenance and Service

Maintenance and Cleaning

Before any work on the machine itself, pull
the mains plug.
For safe and proper working, always keep the
machine and ventilation slots clean.
If the machine should fail despite the care taken in man-
ufacturing and testing procedures, repair should be
carried out by an after-sales service centre for Bosch
power tools.
In all correspondence and spare parts order, please
always include the 10-digit article number given on the
type plate of the machine.
2 609 932 467 • 19.1.07

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