Red Seal Truck and Transport Mechanic Practice Exam

What is a common indicator of brake pad wear?

1. Increased fuel consumption

2. Vibration during braking

3. Noise when braking

4. All of the above

The correct answer is: All of the above

A common indicator of brake pad wear involves several symptoms, one of which is the noise produced when braking. As brake pads wear down, they may produce a squeaking or grinding sound, which serves as an audible warning that they need to be inspected or replaced. This noise results from the wear indicators built into some brake pads that signal when they have reached a level of wear that can compromise braking performance. Additionally, vibration during braking can also indicate wear. When the brake pads become unevenly worn or when the brake rotor is damaged, it can lead to a pulsating sensation felt through the brake pedal, signaling that there may be an issue needing attention. Increased fuel consumption can sometimes be indirectly related to brake pad issues. If the brakes are dragging due to worn pads, this can lead to increased rolling resistance, which may cause the engine to work harder than necessary, thus consuming more fuel. Each symptom—noise when braking, vibration, and increased fuel consumption—indicates potential brake pad wear, leading to the conclusion that experiencing all of these signs can collectively indicate that brake pads may need replacing. Therefore, recognizing any combination of these indicators is crucial for maintaining safe vehicle operation and performance.