Home › CDL Practice Tests › Air Brakes Questions › Question 50
If the compressor drive belt breaks while driving, what will happen to the air system?
- A.Pressure will stay at cut-out indefinitely
- B.The governor will drive the compressor by itself
- C.No new air will be produced, so pressure will fall with each brake use until warnings and then spring brakes engage
- D.Only the trailer brakes will be affected
Correct answer
C. No new air will be produced, so pressure will fall with each brake use until warnings and then spring brakes engage
Why
Stored air buys the driver a limited number of applications to get stopped in a safe place. Continuing to drive and pump the brakes only spends that reserve faster.
Manual topic: Air Brakes - Air Compressor and Governor · From the Air Brakes practice bank (AB-050).