Technician A says brake drums with moderate to severe scoring can be refinished by either turning on grinding on a brake lathe. Technician B says brake drums with moderate to severe scoring must be replaced. Who is correct?

Question

Quizplus · Accepted Answer

Brake drums with moderate to severe scoring can often be refinished by either turning or grinding on a brake lathe, which can remove the scoring and restore a smooth surface for the brake shoes to make contact with. However, if the scoring is too deep or the drum is too thin, replacement may be necessary. Therefore, Technician A is correct, while Technician B is incorrect.

Technician a Says Brake Drums with Moderate to Severe Scoring