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WARNING:
Once the brakes have been adjusted, always perform a brake test by pushing the bike
quickly fbrwards and operating the brake lever. You should only use your bike if you can
safely stop it using the brakes.
Check regularly, also before each journey, that the lines and connections are tight. If
lines and connections are not tight, brake fluid may escape from the brake system. The
brake may not work properly as a result.
If fluid escapes from the braking system, do not use the bike and have the necessary
repair work carried out immediately by a professional bike workshop.
If you continue riding the bike in this condition, the risk of brake failure is extremely like-
ly.
If the brake blocks come into contact with oil or grease, they must be replaced. If the
brake disc comes into contact with oil or grease, it must be cleaned as otherwise its
braking performance will be drastically reduced.
X-3.2: Vapor bubble formation
•
Vapor bubble formation can occur if the brakes are operated continuously for some time, e. g.
during a long steep descent.
Instead of applying gentle pressure continuously with the brakes, operate them for shorter
periods, with more force rf necessary, releasing the brake lever intermittently.
• Vapor bubbles form if water in the brake fluid heats up, evaporates and forms bubbles in the
brake system.
As these are easily compressed, the brake lever travel distance increases.
WARNING:
When transporting or storing the bike upside down, air bubbles can form in the brake
system fluid reservoir.
If you then use the bike, the brakes could fail and cause a serious accident.
Once the bike is in the correct riding position, pull the brake lever several times to check
whether the brakes respond normally.
NOTE:
Brake pads and brake blocks are wear parts. Have the brake pads of hydraulic disc
brakes checked regularly, and replaced if necessary, by a professional bike workshop.
If not, adjust them as follows:
•
Adjust the brake lever sort is parallel to the ground and operate it slowly several times so
the bubbles return to the reservoir.
•
If the response is still poor, the brake system must be vented. Have this work carried out by
a specialist cycle shop.
X-3.3: Cleaning the brake system
If the brake blocks come into contact with oil or grease, they must be replaced. If the brake disc
comes into contact with oil or grease, rt must be cleaned as otherwise its braking performance
will be drastically reduced.
•
Clean and maintain the brake system using isopropyl alcohol, soapy water or a dry cloth. Do
not use commercially available brake cleaning agents or agents to prevent braking noises
as these can damage components such as the seals.
