Q
29. The S-cam:
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AControls the flow air to each of the brake chambers.
BPulls the brake shoes away from the drum and allow the wheels to roll freely.
CForces the brake shoes against the inside of the brake drum.
Detailed Explanation
The correct answer is "Forces the brake shoes against the inside of the brake drum.". This is based on federal CDL regulations and safety standards.
Correct Answer: Forces the brake shoes against the inside of the brake drum.
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