Operation Manual

CycleMaintenance
110
14.9.2 Rim wear indicator with rim brakes
The wear indicator is a groove in the surface of the rim where the brake pads are
pressed. The wear limit is reached when the surface groove can no longer be felt,
i.e. has been worn away through braking.
x Check whether there is a wear indicator
on the rims of your cycle
(see “Illustr.: Rim with a wear indicator”).
1. If your cycle rims have an indentation,
check whether the wear limit has been
reached.
2. Stroke your fingernail vertically across
the indentation.
x If you cannot feel the indentation,
do not use the cycle.
x Have the rims replaced by your
dealer.
14.9.3 Tyres
1. Check whether the tyre pressure is correct (see the “Wheels and tyres / Tyres and
valves / Tyre pressure” chapter).
2. Check the tyres for cracks and damage from foreign bodies.
3. Check whether you can clearly feel the tyre tread.
x If a tyre is cracked or damaged, or the tread depth is too low, have the tyre
replaced by your dealer.
The following sentence is only applicable for Europe:
x On an S-pedelec, ensure that the profile depth does not fall below 1 mm.
4. Check whether the valves are firmly in place and tighten the lower knurled nut if
necessary by turning it clockwise.
5. Check whether the valves have a protective cap.
x Replace missing protective caps so that dust and dirt cannot get into the
valves.
Illustr.: Rim with a wear indicator (example)
1 Indentation
1