32
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Formation of air bubbles on the disk brakes
Avoid permanently braking for longer
periods, as can be the case during
long, steep descents. Otherwise this
can allow vapour bubbles to form and cause
a complete failure in the braking system. This
could result in serious falls and injury.
The brake lever may not be applied if the
bicycle is on its side or upside down. Other-
wise air bubbles can enter the hydraulic sys-
tem which could cause the brakes to fail. After
transporting the bicycle, check if the pressure
point of the brakes seems softer than it was
before. Then apply the brakes slowly sev-
eral times. This allows the braking system to
discharge any bubbles. If the pressure point
remains soft, please refrain from riding. A
specialist retailer has to then discharge the
air from the brake system.
You can avoid this problem by apply-
ing the brake lever before transport
and then fixing it in this position using
a strap. This prevents any air from entering
the hydraulic system.
When you come to cleaning the braking system,
please first read the instructions provided by the
component manufacturer.
Please do not touch the brake disk
while it is rotating or directly after brak-
ing. This could result in injury or burns.
In particular, brake disks and brake
pads are subject to wear. Please
allow a specialist retailer to check
these key parts on a regular basis and re-
place any worn parts if necessary.
Source: Shimano
®
techdocs
Source: Shimano
®
techdocs
If your bike is equipped with a con-
verter, which allows you to operate
hydraulic brakes with mechanical
brake levers, read the enclosed component
manufacturer’s instruction manual before us-
ing your bike.
Roller brake
Source: Shimano
®
techdocs
Drum brakes
Roller brakes
Gear hubs, roller, drum or back pedal brakes are
opened as follows:
•
Loosen the cable anchor or quick release on
the brake arm.
•
In the case of back pedal brakes, the screws
on the brake arm of the chain stay have to be
opened.
There are different types of disk
brakes for racing bikes and cyclo-
cross bikes. Make sure to read the
enclosed manufacturer’s instruction manual
before taking your bike on its first ride. Famil
-
iarise yourself with the brakes and the braking
power on safe ground before your first ride.
Summary of Contents for Children's bike
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