Monte Carlo V6-3.8L VIN K (1998)
Brake Rotor/Disc: Testing and Inspection
Brake Rotor Tolerance
Tolerances of the braking surfaces for the following conditions are held closely during the manufacture of the brake rotor:
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Flatness
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Parallelism
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Lateral runout
The maintenance of close tolerances on the shape of the braking surfaces is necessary in order to prevent brake roughness or pulsation. The surface finish
must be held to a specified range of a 60 ° radius of roughness or less. A new rotor conforms to the above specifications, as will a correctly refinished
rotor. Refer to Component Specifications. Control of the braking surface finish will eliminate the following problems:
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Hard pedal application
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Excessive brake fade
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Pulls
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Erratic performance
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Control of the braking surface finish will improve lining life
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Light scoring of the rotor surfaces not exceeding 1.5 mm (0.060 inch) in depth is not detrimental to brake operation. Normal use may cause the
light scoring.
