MY21K01 - 32_1.0_23.09.2020
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Cleaning and servicing
7.4.4 Checking the pressure point
Pull brake lever and hold repeatedly several
times.
If you are unable to clearly detect the pressure
point and it changes, the brake needs to be
vented. Contact your specialist dealer.
7.4.5 Checking the brake discs for wear
Check that the brake disc measures no less
than 1.8 mm in depth at any point.
The brake discs have not reached their wear
limit yet; brake discs need to be replaced if
they have. Contact your specialist dealer.
7.4.6 Checking the electrical cables and
brake cables
Check all visible electrical cables and Bowden
cables for damage. If the sheathing is
compressed, a brake is defective or a light
does not work, the pedelec must be removed
from service until the lines or cables have been
repaired. Contact your specialist dealer.
7.4.7 Checking the gear shift
Check the gear shift and the shifter or the gear
twist grip setting and adjust as necessary.
7.4.8 Checking the stem
The stem and quick release system must be
inspected at regular intervals. The specialist
dealer should adjust them if necessary.
If the hexagon socket head screw is also
loosened, the headset backlash also needs to
be adjusted. Medium-strength thread locker,
such as Loctite blue, then needs to be applied
to the loosened screws and the screws
tightened as per specifications.
Contact your specialist dealer if there is any
wear or signs of corrosion.
7.4.9 Checking the USB port
7.4.10 Checking the belt and chain tension
1 Check the chain tension in three or four
positions, turning the crank a full revolution.
Figure 113: Checking the chain tension
2 If the chain can be pushed more than 2 cm, the
chain or drive belt will need to be tensioned
again by the specialist dealer.
3 If the chain or the drive belt can only be pushed
up and down less than 1 cm, you will need to
slacken the chain or the drive belt.
The optimum chain tension is achieved if the
chain or the drive belt can be pushed a
maximum of 2 cm in the middle between the
pinion and the toothed wheel. The crank must
also turn without resistance.
4 If a hub gear is fitted, the rear wheel must be
pushed backwards or forwards to tighten the
chain. Contact your specialist dealer.
5 Check the handlebar grip is firmly in position.
Notice
Any moisture penetrating through the USB port
may cause a short circuit in the display.
Regularly check the position of the cover on the
USB port and adjust it as necessary.
Notice
Excessive chain tension increases wear.
If the chain tension is too low, there is a risk that
the chain or the drive belt will slip off the chain
wheels.
Check the chain tension once a month.
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