Michigan CDL Air Brakes Practice Questions - Michigan CDL Air Brakes Knowledge Test Exam

Under Michigan CDL Manual Section 5, what does the S-cam do in an S-cam drum brake?

It releases air from the lines It rotates between the brake shoes, forcing them outward against the drum It cools the brake drum It activates the low-pressure warning

Correct Answer:

It rotates between the brake shoes, forcing them outward against the drum

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