| Monthly | |
| Weekly | |
| Daily | |
| Never |
| Allow excess air pressure to be released from air tanks | |
| Deliver air from the air compressor to the air tanks | |
| Deliver air from the air tanks to the air brakes | |
| Allow water and oil to be expelled from air tanks |
| Release the parking brake and continuously pump the brakes | |
| Apply the parking brake and continuously pump the brakes | |
| Engage the air brake override | |
| Accelerate to 15 mph and slam on the brakes |