Title: Identify poor stopping, air leaks, premature wear, pulling, grabbing, dragging, or balance problems caused by supply and service system malfunctions.
Course: Diesel Equipment Technology II (20107-II) > Section: Brakes: Servicing Air Brakes

Identification should include

- listing the causes of poor stopping (e.g., long stopping distances, pulling, grabbing, dragging, or balance problems)
- confirming that air pressure is at least 90 psi before beginning the test drive
- confirming that the brake pedal has the proper amount of resistance when pressed
- confirming that the brake pedal has the proper amount of resistance when pressed
- driving the vehicle through a variety of braking scenarios to check for even and smooth braking
- confirming that there is no excessive stopping distance, pulling, grabbing, dragging, or balance problems under normal braking conditions.

ASE 3: III. Brakes: A. General (P-1)

Process/Skill Questions:

- What would cause a spongy, weak, or no-brake pedal?
- What might cause a hard brake pedal with little effort applied to the brakes?
- What might a driver experience if air pressure is low?
- How would a broken spring hanger affect steering during braking?