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1 609 929 M57 | (12.9.07) Bosch Power Tools
16 | English
An estimation of the level of exposure to vibra-
tion should also take into account the times
when the tool is switched off or when it is run-
ning but not actually doing the job. This may sig-
nificantly reduce the exposure level over the total
working period.
Identify additional safety measures to protect the
operator from the effects of vibration such as:
maintain the tool and the accessories, keep the
hands warm, organisation of work patterns.
Assembly
Battery Charging
A battery that is new or has not been used for a
longer period does not develop its full capacity
until after approx. 5 charging/discharging cycles.
To remove the battery 1, press the unlocking but-
tons and pull the battery out of the machine to
the rear. Do not exert any force.
The battery is equipped with a NTC temperature
control which allows charging only within a tem-
perature range of between 0 °C and 45 °C. A long
battery service life is achieved in this manner.
A significantly reduced working period after
charging indicates that the battery is used and
must be replaced.
Observe the notes for disposal.
Changing the Tool
f Before any work on the machine (e. g., main-
tenance, tool change, etc.) as well as during
transport and storage, set the rotational di-
rection switch to the centre position. Unin-
tentional actuation of the On/Off switch can
lead to injuries.
Open the key type drill chuck 8 by turning until
the tool can be inserted. Insert the tool.
Insert the chuck key 6 into the corresponding
holes of the key type drill chuck 8 and clamp the
tool uniformly.
Screwdriver Tools
When working with screwdriver bits 5, a univer-
sal bit holder should always be used. Use only
screwdriver bits that fit the screw head.
Replacing the Drill Chuck
f Before any work on the machine (e. g., main-
tenance, tool change, etc.) as well as during
transport and storage, set the rotational di-
rection switch to the centre position. Unin-
tentional actuation of the On/Off switch can
lead to injuries.
Removing the Securing Screw
The key type drill chuck 8 is secured with a secur-
ing screw 7 against unintentional loosening.
Open the drill chuck 8 completely and unscrew
the securing screw 7 by turning in clockwise di-
rection. Please observe that the securing screw
has a left-hand thread.
Removing the Drill Chuck
To remove the key type drill chuck 8, clamp an Al-
len key into the key type drill chuck 8. Place the
machine onto a stable support, e. g. a work-
bench. Hold the machine tightly and loosen the
key type drill chuck 8 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.
Note: After mounting the key type drill chuck,
screw the securing screw 7 in again.
The drill chuck must be tightened with a
tightening torque of approx. 10–20 Nm.
OBJ_BUCH-498-001.book Page 16 Wednesday, September 12, 2007 3:55 PM
16


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