What is a sign of mechanical damage in brake components?

Visible fractures or cracks on brake components are a significant sign of mechanical damage. These defects can compromise the structural integrity of the parts, which is crucial for the safe operation of the braking system. When cracks occur, they can lead to brake failure, as the damaged parts may not be able to withstand the forces exerted during braking. Detecting these visible fractures is essential during inspections, as they indicate that the components may need to be replaced to ensure the vehicle's safety.

In contrast, discoloration due to friction is often a normal occurrence from heat generated during braking. Normal wear patterns indicate that the brake components are functioning as expected and are experiencing regular use without undue stress. Dust accumulation is common in brake systems but does not necessarily indicate mechanical damage, as it can be a typical byproduct of brake operation. Thus, identifying visible fractures or cracks is critical for assessing the condition and safety of brake components.