Air Break Practice Test

Results

#1. The air-loss rate test can be performed only when

both the spring and service brakes are released.

the spring brakes are applied and the service brakes are released.

the spring brakes are released and the service brakes are applied.

both the spring and service brakes are applied.

To perform the air-loss rate test, first secure the vehicle and release the spring brakes. Next, ensure that air pressure is within its normal operating range. Now fully apply and hold the brake pedal to keep sending compressed air to the service brakes. Watch your air pressure gauges and see what happens to the service tank air pressures.