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

On the Michigan CDL Air Brakes test, what does the term 'compounding' refer to in air brake systems, and why is it bad?

Combining tires Applying both service air brakes and spring parking brakes at the same time — total force can exceed component limits and damage chambers and slack adjusters Drying the air Compressing fuel

Correct Answer:

Applying both service air brakes and spring parking brakes at the same time — total force can exceed component limits and damage chambers and slack adjusters

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