Practice question

What is the primary function of the air compressor governor in a commercial vehicle dual air brake system?

  1. To lubricate the brake drums and linings with oil mist
  2. To control when the air compressor pumps air into the storage reservoirs by managing cut-in and cut-out pressures
  3. To measure engine coolant temperature
  4. To apply the parking spring brakes automatically when changing gears

Answer: B — To control when the air compressor pumps air into the storage reservoirs by managing cut-in and cut-out pressures

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