Question

Brake drums need to be discarded if they experience__________________.

a) poor lining-to-drum contact
b) spring brakes not fully releasing
c) severe heat checking
d) slow release

Answer 1

Brake drums need to be discarded if they experience severe heat checking, which is the formation of cracks on the surface of the drum due to excessive heat.

Step-by-step explanation:

Brake drums need to be discarded if they experience severe heat checking. Heat checking is the formation of cracks on the surface of the brake drum due to excessive heat. These cracks can weaken the drum, compromising its integrity and effectiveness. Discarding brake drums with severe heat checking is important for ensuring the safety of the vehicle.