Title: Inspect the emergency (spring) brake control/modulator valve(s).
Course: Diesel Equipment Technology II (20107-II) > Section: Brakes: Servicing the Air Brakes

Inspection should include operating the yellow parking brake switch and determining whether the parking brakes release properly.

Process/Skill Questions:

- What would happen to the parking brakes if there was a leak at the primary brake control system?
- How many brake applications does the air in the air tank(s) allow if there is a problem in the system?