Michigan State Brakes Certification Practice Exam

Question: 1 / 400

Which incorrect service procedure could lead to brake pedal pulsation?

Improper brake lining installation

Incorrect run-out on the car brake lathe

The mentioned service procedure that can lead to brake pedal pulsation relates directly to the brake lathe's operational accuracy. When the run-out on the brake lathe is incorrect, it means that the machined surface of the brake rotor is not perfectly even or parallel. This unevenness can cause the brake rotor to wobble as it rotates, resulting in inconsistent contact between the brake pads and the rotor surfaces. Consequently, when the brakes are applied, the varying contact points can trigger a pulsating sensation in the brake pedal, often felt as a vibration.

Ensuring that the run-out is minimized during the machining process is critical for maintaining smooth brake performance. This aspect is crucial for avoiding issues such as brake pedal pulsation, creating a need for precision in brake system servicing.

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Using incorrect brake fluid

Over-torquing wheel lug nuts

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