Maintenance And Service - Bosch GDR 14,4 V-LI MF Professional Manual Original

16 | English
An unnecessarily long impact duration only causes dam-
age to the machine.
– A spring-loaded seat is also a metal-to-metal screw ap-
plication but uses spring washers, disc springs, studs or
screws/nuts with conical seats. It is also called a spring-
loaded seat when extensions are used.
Guide values for maximum screw tightening torques
Figures given in Nm; calculated from the tensional cross-section; utilization of the yield point: 90% (with friction coefficient
µ = 0.12). As a control measure, always check the tightening torque with a torque wrench.
total
Property classes Standard screws
according to
3.6 4.6
DIN 267
M6 2.71 3.61
M8 6.57 8.7
M10 13 17.5
M12 22.6 30
M14 36 48
Tips
Before screwing larger, longer screws into hard materials, it
is advisable to pre-drill a pilot hole with the core diameter of
the thread to approx. 2/3 of the screw length.
Belt clip
You can use the belt clip (6) to hang the power tool on a belt,
for example. You then have both hands free and the power
tool is always at hand.
Hinweise für den optimalen Umgang mit dem Akku
Schützen Sie den Akku vor Feuchtigkeit und Wasser.
Lagern Sie den Akku nur im Temperaturbereich von 0 °C bis
50 °C. Lassen Sie den Akku z.B. im Sommer nicht im Auto
liegen.
Reinigen Sie gelegentlich die Lüftungsschlitze des Akkus mit
einem weichen, sauberen und trockenen Pinsel.
Eine wesentlich verkürzte Betriebszeit nach der Aufladung
zeigt an, dass der Akku verbraucht ist und ersetzt werden
muss.
Beachten Sie die Hinweise zur Entsorgung.

Maintenance and Service

Maintenance and cleaning
Remove the battery from the power tool before carry-
u
ing out work on the power tool (e.g. maintenance,
changing tool, etc.). The battery should also be re-
moved for transport and storage. There is risk of injury
from unintentionally pressing the on/off switch.
To ensure safe and efficient operation, always keep
u
the power tool and the ventilation slots clean.
Replacing the carbon brushes (see figure D)
Check the length of the carbon brushes around every 2–3
months and replace both carbon brushes if required.
Never replace only a single carbon brush.
Note: Only used carbon brushes supplied by Bosch and in-
tended specifically for your product.
1 609 92A 4AK | (15.05.2018)
– A soft seat is a screw application of e.g. metal on wood or
a screw application that uses lead washers or fibre wash-
ers as backing.
For a spring-loaded seat, as well as for a soft seat, the max-
imum tightening torque is lower than for a hard seat. A much
longer impact duration is also required.
5.6 4.8 6.6 5.8
4.52 4.8 5.42 6.02
11 11.6 13.1 14.6
22 23 26 29
37.6 40 45 50
60 65 72 79
– Unscrew the caps (16) using a suitable screwdriver.
– Replace the spring-loaded carbon brushes (15) and
screw the caps back on.
If the battery is no longer working, please contact an author-
ised after-sales service agent for Bosch power tools.
After-sales service and advice on using products
Our after-sales service responds to your questions concern-
ing maintenance and repair of your product as well as spare
parts. You can find explosion drawings and information on
spare parts at: www.bosch-pt.com
The Bosch product use advice team will be happy to help you
with any questions about our products and their accessor-
ies.
In all correspondence and spare parts orders, please always
include the 10‑digit article number given on the nameplate
of the product.
Great Britain
Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Denham Uxbridge
UB 9 5HJ
At www.bosch-pt.co.uk you can order spare parts or ar-
range the collection of a product in need of servicing or re-
pair.
Tel. Service: (0344) 7360109
E-Mail: boschservicecentre@bosch.com
Ireland
Origo Ltd.
Unit 23 Magna Drive
Magna Business Park
City West
Dublin 24
Tel. Service: (01) 4666700
Fax: (01) 4666888
High-strength screws
6.8 6.9 8.8 10.9
7.22 8.13 9.7 13.6
17.5 19.7 23 33
35 39 47 65
60 67 80 113
95 107 130 180
Bosch Power Tools
12.9
16.2
39
78
135
215