Practice question

Brake-drum cracks visible during a pre-trip walk-around are:

Cosmetic only
Out-of-service defects — any visible crack on the drum or rotor (other than minor hairline cracks not extending to the open edge) puts the vehicle out of service
A maintenance suggestion
Sign of new brakes

Answer: B — Out-of-service defects — any visible crack on the drum or rotor (other than minor hairline cracks not extending to the open edge) puts the vehicle out of service

The correct answer is shown above. Try the full quiz for additional practice.