OBJ_BUCH-281-001.book Page 20 Thursday, October 26, 2006 10:40 AM
Setting the Direction of Rotation and the Torque
The rotational direction switch 1 is used both for setting
the direction of rotation as well as for setting the torque.
"Forward" stands for right rotation.
F
"Reverse" stands for left rotation.
R
Operate the rotational direction switch only
when the tool is stopped.
Right rotation: For screwing in bolts and nuts, turn
the rotational direction switch 1 in clockwise direction
to 1 (lowest torque), 2 or to the stop (highest torque).
Left rotation: For loosening or unscrewing bolts and
nuts, turn the rotational direction switch 1 in counter-
clockwise direction.
Switching On and Off
Note: If the tool does not start after, for example, not
being used for a long period of time, disconnect the air
supply and turn the motor repeatedly by rotating the
tool bit holder 7. This eliminates adhesive forces.
7
6
For switching on the pneumatic tool, push the On/Off
switch 6.
For switching off the pneumatic tool, release the
On/Off switch 6.
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Note: The required torque adjustment and the duration
of the driving-in procedure depend on the type of screw
connection and can be best determined by practical tri-
als. Check the trial screwings with an electronic torque
measurer or a torque wrench. Once the optimal torque
setting and driving-in duration are determined, try to
press the On/Off switch 6 similarly long for the same
driving-in procedures.
Working Instructions
1
Disconnect the air hose from the air source
before making any adjustments, changing
accessories, or storing the pneumatic tool.
Such preventive safety measures reduce the risk of
starting the pneumatic tool accidentally.
Place the tool bit onto the nut/screw only
when the screwdriver is switched off. Rotating
tool bits can slide off the nut/screw.
In the event of an interruption of the air sup-
ply or reduced operating pressure, switch off
the pneumatic tool. Check the operating pres-
sure and restart the tool when the operating
pressure is again optimal.
Excess loads that cause the pneumatic tool to stall or
reduce speed will not damage the motor.
Maintenance and Service
Maintenance and Cleaning
Disconnect the air hose from the air source be-
fore making any adjustments, changing acces-
sories, or storing the pneumatic tool. Such pre-
ventive safety measures reduce the risk of starting
the pneumatic tool accidentally.
Should the pneumatic tool fail in spite of careful manu-
facturing and testing procedures, have the repairs per-
formed by an authorized customer service location for
Bosch power tools.
For inquiries and spare parts ordering, please include
the 10-place article number on the nameplate of the
pneumatic tool.
4
3
should use an open-end spanner (size 19 mm) to apply
a counterforce at the protruding connector of the air
inlet 4 when screwing/unscrewing the hose nipple 3.
Clean the screen of the air inlet reg-
ularly. For this purpose, unscrew
the hose nipple 3 and remove dust
and dirt particles from the screen.
Then firmly remount the hose nip-
ple.
To prevent damage to the internal
valve components of the tool, you
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