Automotive Service Excellence (ASE) Brakes Certification Practice Exam

Technician B’s statement regarding the necessity of remeasuring brake drums after refinishing is correct because it is crucial to ensure that the drums remain within manufacturer specifications for thickness. After the refinishing process, it is common for material to be removed to the point where the brake drum may become too thin. If a drum is excessively worn and is not remeasured, it can lead to reduced braking efficiency, overheating, and even the potential for the drum to fail.

By remeasuring the drum, technicians can determine if it is still structurally sound and if it meets the acceptable limits for safe operation. This practice ensures that the vehicle maintains optimal braking performance and safety.

Technician A's assertion about refinishing only when excessively grooved overlooks the need for ongoing assessment of the drum's condition. It is important not only to consider visible wear but also to ensure the drum's overall integrity after any maintenance work, which includes refinishing.