34 00... General notes on handling carbon ceramic brakes (CSiC)

The brake system is one of the most important safety systems in the vehicle. Therefore, it is important to exercise special care when performing work on the brake system and to adhere to the following instructions.

Bear in mind that any kind of impact stress and collision with hard materials can damage ceramic surfaces and edges.

• Suitable training courses must be given in which employees are instructed accordingly
• To avoid damage to the brake disc and brake caliper, always use a wheel mounting lift to remove and fit wheels
• The carbon ceramic brake discs must not be reworked or modified.
• Retightening or removal of the connecting parts is not permitted
• Damage to the hub contact surface and rim bearing surface is not permitted
• Only a limited amount of spalling at the edges of the friction ring of the carbon ceramic brake disc is permitted. See ASSESSING CARBON CERAMIC BRAKE DISC FOR WEAR 
• Brake discs that have been exposed to heavy impact stress, e.g. have been dropped, must no longer be used. -> the brake disc is unserviceable due to visible and invisible damage.
• Wear measurement:

  See CHECKING CARBON CERAMIC BRAKE DISCS FOR WEAR .

• Assessment of carbon ceramic brake discs

  See ASSESSING THE APPEARANCE OF CARBON CERAMIC BRAKE DISCS  for assessment of optical quality of new carbon ceramic brake discs

• Only if required, clean the carbon ceramic brake disc with a high-pressure cleaner (observe relevant safety regulations).
• Brake cleaners must not be used
• If dirt contamination is lodged in the perforation holes, this can be pushed out carefully using a suitable tool (e.g. punch).

  Do not machine the holes. Drilling or countersinking is not permitted.

See general information on BREAKING IN NEW BRAKE DISCS/BRAKE PADS