You can identify the brake disc as follows:
♦ The wear indicators -arrow- on the friction surface of the brake
disc are no longer visible
♦ By looking at the laser-etched markings -A to D-
Note
♦
The degree of wear is determined by measuring the brake disc
thickness AND the wear value using the tester - VAS 6813- ;
both values must be measured three times each.
♦
The minimum permissible thickness of the brake disc is en‐
graved as “min.th.” on the brake disc hub.
♦
The wear value -C- of the brake disc for the tester - VAS 6813-
is engraved on the brake disc hub.
♦
Value -A- is a value from the production of the new brake disc.
♦
Values -A and C- may vary depending on the measuring point.
♦
Values -A and C- may vary depending on the brake disc.
Example of minimum brake disc thickness (min.th. -3-); the brake
disc thickness must not be less than this value.
Note
Value -3- may vary depending on the brake disc.
Audi A6 2005 ➤ , Audi A6 Avant 2005 ➤
Brake system - Edition 04.2019
3. Assessing degree of wear on ceramic brake discs 17
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