Bosch GBH 5-40 D Professional Original Instructions Manual page 8

OBJ_BUCH-1896-002.book Page 8 Thursday, November 2, 2017 1:43 PM
8 | English
 The mode selector switch 3 must always be locked in
the "Chiselling" position when chiselling.
Working Advice
 Before any work on the machine itself, pull the mains
plug.
Sharpening Chisels
Good results are only achieved with sharp chisels; 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. ce-
ramic 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 impairs 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 oven for approx. one hour
at 320 °C (annealing colour = light blue).
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.
 A damaged dust protection cap should be changed im-
mediately. We recommend having this carried out by
an after-sales service.
If the replacement of the supply cord is necessary, this has to
be done by Bosch or an authorized Bosch service agent in or-
der to avoid a safety hazard.
Lubrication
The power tool is grease-lubricated. Replacement of the lubri-
cating grease is required only during maintenance or repair
through an authorised customer services agent for Bosch
power tools. Here, it is essential that the specified Bosch lu-
bricating grease is used.
After-sales Service and Application Service
Our after-sales service responds to your questions concern-
ing maintenance and repair of your product as well as spare
parts. Exploded views and information on spare parts can al-
so be found under:
www.bosch-pt.com
Bosch's application service team will gladly answer questions
concerning our products and their accessories.
In all correspondence and spare parts orders, please always
include the 10-digit article number given on the nameplate of
the product.
1 609 92A 417 | (2.11.17)
Cambodia
Robert Bosch (Cambodia) Co., Ltd
Unit 8BC, GT Tower, 08th Floor, Street 169,
Czechoslovakia Blvd, Sangkat Veal Vong
Khan 7 Makara, Phnom Penh
VAT TIN: 100 169 511
Tel.: +855 23 900 685
Tel.: +855 23 900 660
www.bosch.com.kh
People's Republic of China
China Mainland
Bosch Power Tools (China) Co., Ltd.
567, Bin Kang Road
Bin Jiang District 310052
Hangzhou, P.R.China
Tel.: 4008268484
Fax: (0571) 87774502
E-Mail: contact.ptcn@cn.bosch.com
www.bosch-pt.com.cn
HK and Macau Special Administrative Regions
Robert Bosch Co. Ltd.
21st Floor, 625 King's Road
North Point, Hong Kong
Customer Service Hotline: +852 2101 0235
Fax: +852 2590 9762
E-Mail: info@hk.bosch.com
www.bosch-pt.com.hk
India
Bosch Service Center
69, Habibullah Road, (Next to PSBB School), T. Nagar
Chennai–600077
Phone: (044) 64561816
Bosch Service Center Rishyamook
85A, Panchkuin Road
New Delhi–110001
Phone: (011) 43166190
Bosch Service Center
79, Crystal Bldg., Dr. Annie Besant Road, Worli
Mumbai–400018
Phone: (022) 39569936 / (022 )39569959 /
(022) 39569967 / (022) 24952071
Indonesia
PT Robert Bosch
th
Palma Tower 10 Floor
Jalan RA Kartini II-S Kaveling 6
Pondok Pinang, Kebayoran Lama
Jakarta Selatan 12310
Tel.: (21) 3005-5800
www.bosch-pt.co.id
Bosch Power Tools