If brake components are rubbing, what should be concluded about the vacuum or hydraulic booster?

When brake components are found to be rubbing, it indicates that there is likely a malfunction or issue that could impact the vehicle's braking performance. This situation often points to a problem with the brake system, including potential issues with the vacuum or hydraulic booster.

The vacuum or hydraulic booster assists in amplifying the force applied by the driver when they press the brake pedal. If components are rubbing, it raises concerns about the effectiveness of this system, leading to diminished braking power and potentially unsafe driving conditions. Therefore, the appropriate conclusion in this scenario is that the booster must be serviced to ensure it operates correctly and safely.

Servicing the booster can involve checking for leaks, ensuring that it is functioning properly, and making any necessary repairs or adjustments. This measure is crucial to restore the vehicle’s braking efficiency and maintain safety standards as required for inspection.