Some air brake systems have an alcohol evaporator. What may happen if you don't keep the unit filled?
A. The s-cam may not rotate back when you release the brake pedal
B. Ice may form in the air storage tanks or air lines and cause the brakes to fail.
C. Ice may form on the brake drums and warp them.
Answer: B. Ice may form in the air storage tanks or air lines and cause the brakes to fail.
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