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

Inspection should include operating the yellow parking/emergency brake valve and determining whether the parking/emergency brakes release and apply correctly.

ASE 1: III. Brakes: B. Air Brakes: Air Supply and Service Systems (P-1)

Process/Skill Questions:

- What would happen to the parking/emergency brakes if there was a leak in 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?
- What applies the parking/emergency brakes? What releases the parking/emergency brakes?