Brakes (A5)Question 54 of 120
During a disc brake job, a technician should measure rotor thickness and compare it to the:
a.Tire pressure specification
b.Battery voltage
c.Toe specification
d.Minimum (discard) thickness stamped on the rotor
Explanation
Rotors must remain above the minimum thickness (often cast or stamped on the rotor) to dissipate heat and resist warping. A rotor below spec must be replaced, not machined. Measuring with a micrometer at several points also reveals thickness variation.
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