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

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Under Michigan CDL Manual Section 5, what is the typical reason a driver fails the static air loss rate test in a pre-trip?

The compressor is too quiet Air leaks in a brake chamber, fitting, hose, glad hand, or valve that exceed the legal psi/minute limit The brakes are too cold The engine is too small

Correct Answer:

Air leaks in a brake chamber, fitting, hose, glad hand, or valve that exceed the legal psi/minute limit

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