Practice question

What is the proper sequence of the seven-step air brake check in the pre-trip?

Random order is fine
1) Build pressure to governor cut-out; 2) check governor cut-in (fan brakes); 3) test air-loss rate; 4) check low pressure warning; 5) check spring brake activation; 6) test parking brake (tug test); 7) test service brake (rolling stop)
Start with the parking brake test only
Drain the tanks last

Answer: B — 1) Build pressure to governor cut-out; 2) check governor cut-in (fan brakes); 3) test air-loss rate; 4) check low pressure warning; 5) check spring brake activation; 6) test parking brake (tug test); 7) test service brake (rolling stop)

The correct answer is shown above. Try the full quiz for additional practice.