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Assessment of ceramic brake discs > < Wear assessment by checking thickness of brake disc

A5

Wear assessment on basis of wear indicators
Wear assessment on basis of wear indicators
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.
  A00-10358
Illustration: Wear indicator – brake disc OK
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.
The following two illustrations show brake discs on which the wear indicators are burnt out. In this case the brake disc must be renewed.
  A00-10610
Illustration: Wear indicator burnt out
In this case, always renew the brake discs on both sides of the axle.
  A00-10611
Illustration: Wear indicator burnt out
When doing so, always renew the brake pads on both sides of the axle.
Checking area of bolted connection on friction ring and brake disc hub:
  WARNING
The brake disc ring and the brake disc hub are bolted together and must NOT be separated. Do NOT slacken the bolted connection on the brake disc hub.
  A00-10612

Assessment of ceramic brake discs > < Wear assessment by checking thickness of brake disc