Audi A6 2005 Workshop Manual page 27

– Move tester - VAS 6813- -1- along outer edge -2- until laser
beam points exactly towards marking -D- on brake disc.
– Measure wear at all three measuring points (1 to 3) on brake
disc.
– To do so, read off value displayed on tester - VAS 6813- .
The brake disc must be removed and checked further for wear if
the value is less than or equal to one of the three wear values
-C- .
Note
Wear value -C- varies depending on the measuring point.
– Remove brake disc.
Note
To ensure that the following measurement is completely ac‐
♦
curate, place the brake disc on a non-conductive surface (e.g.
wooden table).
The surface must be clean and dry.
♦
The brake disc must be clean and dry.
♦
– Place tester - VAS 6813- at outer edge of brake disc again so
that it is flush.
The measuring procedure must be performed at all three meas‐
uring points to ensure that the degree of wear is determined
reliably.
– Move tester - VAS 6813- -1- along outer edge -2- until laser
beam points exactly towards marking -D- on brake disc.
– Measure wear at all three measuring points (1 to 3) on brake
disc.
– To do so, read off value displayed on tester - VAS 6813- .
The brake disc must be renewed if the value is less than or equal
to one of the three wear values -C- .
WARNING
If one brake disc is damaged or worn, the other discs must also
be checked for damage and wear.
Audi A6 2005 ➤ , Audi A6 Avant 2005 ➤
Brake system - Edition 04.2019
3. Assessing degree of wear on ceramic brake discs
21