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PCCB surface roughness (Sr) = 108 micrometre (view 1) 2.1. Surface roughness (Sr) = 108 µm -see illustration- (view 1) PCCB surface roughness (Sr) = 108 micrometre (view 2) Surface roughness (Sr) = 108 µm -see illustration- (view Worn surface. Advanced wear has led to a situation where only the remains of the original surface are It is clear that the roughness is caused not only by depressions but also by In general, the following applies: Brake discs must be replaced if the surface roughness (Sr) is > 3. Worn brake discs (special cases): PCCB surface roughness (Sr) = 108 micrometre 3.1. Surface roughness (Sr) = 108 µm, as in the case of the previous disc, but with the remainder of the original friction surface -arrow- . In general, the following applies: Brake discs must be replaced if the surface roughness (Sr) is > PCCB brake disc Diagnostic system: reading out fault memory and activating systems Evaluating surface roughness (Sr) (max. 80 micrometre permitted) 1341 |