Self-adjusting brakes use a mechanism that automatically compensates for brake pad wear. This mechanism is typically integrated into the brake caliper and works by adjusting the brake shoes or pads closer to the brake drum or rotor as they wear down.
Here's how it works:
- Automatic Adjustment: The most common type of self-adjusting brakes uses a ratchet mechanism. As the brake shoes or pads wear, the ratchet moves forward, adjusting the brake shoes or pads closer to the drum or rotor.
- Manual Adjustment: Some older models have a manual adjustment lever that can be turned to adjust the brakes. This lever is usually located on the back of the brake caliper.
- Wear Sensor: Some brake systems use a wear sensor that triggers a warning light on the dashboard when the brake pads are worn down. This sensor is often integrated with the self-adjusting mechanism.
Self-adjusting brakes are designed to maintain optimal braking performance by ensuring that the brake pads or shoes are always in the correct position relative to the brake drum or rotor. This helps to prevent excessive wear and tear on the brakes and ensures consistent braking performance over time.