Answer :
Final answer:
Before refinishing a rotor on a brake lathe, it's important to both remove and clean the rotor of any debris and measure it to ensure it exceeds the minimum specified thickness for safety and effective braking performance.
Explanation:
Before refinishing a hub-style rotor on an on-car brake lathe, you should both remove the rotor and clean any dirt or rust from between the hub and rotor (Option A), and measure the rotor to ensure it's above the minimum specified thickness (Option B). This is critical for the performance and safety of the brakes. Overlooking either step can lead to reduced brake performance or failure. Ensure the rotor is clean of any debris because even tiny pieces of rust or dirt can interfere with the braking surface. Use a self-caliper to measure the rotor and never allow it to be thinner than the manufacturer's specified minimum thickness, as a too-thin rotor could potentially crack under high braking loads.
Learn more about Refinishing Rotor here:
https://brainly.com/question/30961151
#SPJ1
