Brake discs

BRAKE DISCS

Dismantling-reassembly

Undo the the bolts securing the brake disc and remove it; when re-fitting, eliminate any traces of rust to ensure that the disc is perfectly perpendicular to the hub.

Checking and measuring disc thickness

The minimum permissible brake disc thickness after wear is 9.20 mm; if the value is lower, the disc should be replaced.

In the case of damage or deep scoring the brake disc surfaces can be skimmed; after skimming, the brake disc thickness must not be less than 10.10 mm.

Checking brake disc run-out

Also check that the disc run-out does not exceed 0.15 mm. This value should be measured 2 mm from the disc's outer diameter.