Wear Assessment According To Wear Indicators - Audi A6 2005 Workshop Manual

Audi A6 2005 ➤ , Audi A6 Avant 2005 ➤
Brake system - Edition 04.2019
Measurement of the brake disc thickness involves removing the
brake discs.
The minimum permissible thickness of the brake disc is engraved
as "min.th." on the brake disc hub.
– The brake disc thickness should be measured at three points
on the periphery next to the individual wear indicators -x-.
If the values are at or below these limits, the brake discs must be
renewed. It is no longer permissible to use these brake discs.
Brake disc with minimum weight stamped on hub:
Note
If the thickness x = "min. th." + 0.05 mm, additionally check the
wear of the brake disc by inspecting the wear indicators
⇒ "3.3 Wear assessment according to wear indicators",
page 14 .
WARNING
If one brake disc is damaged or worn, the other discs must also
be checked for damage and wear.
3.3 Wear assessment according to wear in‐
dicators
Wear indicators are positioned at intervals of 120 degrees on the
friction surfaces of the brake disc.
The wear indicators -arrow- appear in a different colour.
There are three indicators on each side of the brake disc (outside
and inside).
The following illustration shows a wear indicator on a disc that has
not reached the wear limit.
The wear on the ceramic brake disc appears as a dark, burnt out
recess at the wear indicator.
Do NOT continue using the brake disc if one of the six indicators
is completely burnt out. The brake disc must be renewed.
14
Rep. gr.00 - Technical data