What condition leads to the failure of riveted brake linings?

The condition that leads to the failure of riveted brake linings occurs when any rivets are missing or if the lining is less than 1/32 inch above any rivet head. This is critical because the integrity and effectiveness of the brake system depend significantly on the proper installation and condition of the brake linings. When rivets are missing, there isn't sufficient attachment of the lining to the brake shoe, which can cause uneven wear, noise, or even complete failure of the brake system. Additionally, if the lining is not properly seated above the rivet heads, it can result in poor braking performance, as the lining may not effectively engage with the brake drum. Ensuring that the lining is appropriately positioned and secured is crucial for maintaining optimal braking function and safety.

Other conditions, like rust on rivets or changes in color, may indicate maintenance issues or wear but do not directly correlate with immediate failure like missing rivets or insufficient thickness above the rivet heads does. Signs of heat damage typically relate to the deterioration of materials but are less directly connected to the mechanical failure of the lining attachment compared to the specifics of rivet integrity and alignment.