Title: Clean and inspect rotor and mounting surface; measure rotor thickness, thickness variation, and lateral runout; determine necessary action.
Course: Automotive Technology I (20104-I) > Section: Brakes: Disc Brakes

Procedures include using proper measuring tools to determine the condition of the rotor.

ASE Education Foundation
2017 Maintenance and Light Repair (MLR) Level
V. Brakes
D. Disc Brakes
Task 5

Process/Skill Questions:

- What tool is used to check lateral runout and thickness variation?
- What evidence should require a technician to discard rather than try to repair the rotor?
- At how many points does a technician measure rotor for thickness variation?