18
| English
1 619 929 751 | (19.6.07)
Bosch Power Tools
Operating Instructions
Sharpening Chisels (see figure C)
Good results are only achieved with sharp chis-
els; therefore, sharpen the chiselling tools in
good time. This ensures a long service life of the
tools and good working performance.
Re-sharpening
Sharpen chiselling tools using grinding wheels
(e. g. ceramic bonded corundum wheel) with a
steady supply of water. Reference values are
shown in the figure. Take care that no annealing
coloration appears on the cutting edges; this im-
pairs the hardness of the chiselling tools.
For
forging
, heat the chisel to between 850 and
1050 °C (bright red to yellow).
For
hardening
, heat the chisel to approx.
900 °C and quench in oil. Then anneal in an ov-
en for approx. one hour at 320 °C (annealing
colour = light blue).
Maintenance and Service
Maintenance and Cleaning
f
Before any work on the machine itself, pull
the mains plug.
f
For safe and proper working, always keep
the machine and ventilation slots clean.
f
A damaged dust protection cap should be
changed immediately. We recommend hav-
ing this carried out by an after-sales serv-
ice.
Lubrication
The power tool is oil-lubricated. An oil change is
required only within the scope of maintenance
or repair through an authorised after-sales serv-
ice agent for Bosch power tools. In this, it is ab-
solutely required to use the specified Bosch oil.
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 con-
necting 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.
After-sales service and customer assist-
ance
Our after-sales service responds to your ques-
tions concerning maintenance and repair of your
product as well as spare parts. Exploded views
and information on spare parts can also be
found under:
www.bosch-pt.com
Our customer consultants answer your ques-
tions concerning best buy, application and ad-
justment of products and accessories.
Great Britain
Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Denham
Uxbridge
UB 9 5HJ
Tel. Service: +44 (0844) 736 0109
Fax: +44 (0844) 736 0146
E-Mail: [email protected]
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