Air Break Practice Test

Results

#1. Should you pump (keep pressing and releasing) air brakes?

Yes, it compensates for poor adjustment of the brakes.

Yes, this procedure is recommended for highway driving.

Yes, it helps build up air pressure.

No, it causes loss of air pressure.

Each time you release the brakes, some compressed air leaves the system and must be replenished by the air compressor. If you keep pressing and releasing the brake pedal, air may leave the system faster than the air compressor can replenish it. The air pressure may drop to the point that the low air pressure warning signal will come on.