Starting Operation; Working Advice; Maintenance And Service; Maintenance And Cleaning - Bosch GBM 13 Professional Originalbetriebsanleitung

Replacing the Drill Chuck (see figure C)
Before any work on the machine itself, pull
the mains plug.
Removing the Drill Chuck
To remove the key type drill chuck 1, clamp an Al-
len key into the key type drill chuck 1. Place the
machine onto a stable support, e. g. a work-
bench. Hold the machine tightly and loosen the
key type drill chuck 1 by turning the Allen key in
anticlockwise direction. A tightly seated key type
drill chuck is loosened by applying a light blow
onto the long end of the Allen key . Remove the
Allen key from the key type drill chuck and fully
unscrew the drill chuck.
Mounting the Drill Chuck
The key type drill chuck is mounted in reverse or-
der.
The drill chuck must be tightened with a
tightening torque of approx. 36 Nm.
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.
Switching On and Off
To start the machine, press the On/Off switch 3
and keep it depressed.
To switch off the machine, release the On/Off
switch 3 or when it is locked with the lock-on but-
ton 2, briefly press the On/Off switch 3 and then
release it.
Bosch Power Tools
Lock the pushed On/Off
switch 3 by pushing the
lock-on button 2 upward.

Working Advice

For drilling in metal, use only perfectly sharp-
ened HSS drill bits (HSS=high-speed steel). The
appropriate quality is guaranteed by the Bosch
accessories program.
Twist drills from 2.5–10 mm can easily be sharp-
ened with the drill bit sharpener (see accesso-
ries).
We recommend the use of a drill stand (see ac-
cessories) for work where greater precision is
particularly required.
The machine vice, which is available as an acces-
sory, 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 manufacturing 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.
WARNING! Important instructions for connect-
ing a new 3-pin plug to the 2-wire cable.
The wires in the cable are coloured according to
the following code:
Do not connect the blue or brown wire to the
earth terminal of the plug.
Important: If for any reason the moulded plug is
removed from the cable of this power tool, it
must be disposed of safely.
English | 17
1 609 929 M60 | (11.9.07)