Which parts of the brake system must be inspected?

The inspection of the brake system is critical for ensuring the safe operation of a vehicle. The master cylinder, brake lines, and brake shoes are essential components of the braking system that must be thoroughly inspected to ensure proper function and safety.

The master cylinder is responsible for generating the hydraulic pressure needed to engage the brakes. Any malfunction or fluid leakage in the master cylinder can significantly impair braking performance. Therefore, checking the master cylinder for leaks, proper fluid levels, and functionality is vital.

Brake lines are the conduits through which brake fluid travels from the master cylinder to the brake assemblies at each wheel. Inspecting these lines for any signs of wear, damage, or corrosion is crucial, as leaks in the brake lines can lead to a complete failure of the braking system.

Brake shoes, which are part of drum brake systems, need to be inspected for wear and proper clearance. Worn brake shoes can lead to decreased braking efficiency and increased stopping distances.

While other options mention important components, they do not encompass the full range of critical components that require inspection to ensure the braking system operates effectively and safely. For instance, checking electronic controls and sensors is essential but secondary to mechanical components like brake pads, lines, and the master cylinder.