When addressing a brake line leak, who is correct about the necessity of bleeding the system?

When addressing a brake line leak, the need to bleed the system is essential due to the hydraulic nature of brake systems. If a brake line has leaked, it typically indicates that the hydraulic fluid level has dropped, which can lead to air entering the system. The presence of air in the brake lines can severely affect braking performance and potentially lead to brake failure.

In this context, if neither Technician A nor Technician B expresses an understanding that air must be removed from the brake lines by bleeding the system after repairing a leak, it would suggest that both are overlooking a critical aspect of brake system maintenance. Properly bleeding the system ensures that all air is expelled, restoring the full efficacy of the braking system. Therefore, the answer indicating that neither technician is correct aligns with the necessity of proper brake system maintenance practices, affirming that one must always bleed the brakes after any repairs that could introduce air into the system.