Self-adjusting trailer brakes automatically compensate for wear on the brake shoes or pads. They do this by using a mechanism that tightens the brake shoes or pads against the drum or rotor as they wear down. This ensures that the brakes maintain their stopping power throughout their lifespan.
How Self-Adjusting Trailer Brakes Work
Self-adjusting trailer brakes utilize a variety of methods to achieve this automatic adjustment:
1. Ratchet Mechanism: This common method uses a ratchet wheel and pawl. As the brake shoes wear, the pawl moves the ratchet wheel, tightening the shoes against the drum.
2. Cam Mechanism: This mechanism uses a cam that rotates as the brake shoes wear. This rotation moves the shoes closer to the drum, compensating for wear.
3. Automatic Adjuster: This type of adjuster uses a spring-loaded mechanism that pushes the shoes towards the drum as they wear.
Benefits of Self-Adjusting Trailer Brakes
- Consistent braking performance: Self-adjusting brakes ensure optimal braking performance throughout the life of the brake shoes or pads.
- Reduced maintenance: They eliminate the need for manual brake adjustments, saving time and money.
- Improved safety: By maintaining consistent stopping power, self-adjusting brakes enhance safety on the road.
Checking and Maintaining Self-Adjusting Trailer Brakes
While self-adjusting brakes are low-maintenance, it's still important to check them regularly:
- Inspect the brakes: Look for any signs of wear, damage, or corrosion.
- Lubricate the adjuster: Ensure the adjuster mechanism is properly lubricated to prevent sticking.
- Replace worn parts: If the brake shoes or pads are worn, replace them with new ones.
By following these simple maintenance steps, you can ensure your self-adjusting trailer brakes operate efficiently and safely.
