how to release semi trailer brakes without air

Semi-trailers are an essential part of the transportation industry. They transport goods from one place to another on the roadways. A semi-trailer has two types of brakes, air brakes, and mechanical brakes. Sometimes, the air brake system fails, and releasing the brake can be a challenge. In this article, we will guide you on how to release semi-trailer brakes without air.

Locating the Emergency Brake Lever

The emergency brake lever is a mechanical brake system that is used when the air brake system fails. It is a lever attached to the semi-trailer's brake chamber, and it is located on the driver's side behind the cab of the truck. You can quickly identify the emergency brake lever by looking for a red knob on the lever.

Releasing Semi-Trailer Brakes With Emergency Brake Lever

To release the brakes with the emergency brake lever, you need to pull the red knob on the lever. Pulling the red knob activates the brake chamber's diaphragm, which releases the brakes. You should ensure that you pull the knob until you hear the brakes release. When the brakes are released, you can then move the semi-trailer.

Checking the Semi-Trailer Brake System

Releasing the semi-trailer's brakes using the emergency brake lever should be done as a last resort. After releasing the brakes, you should check the air brake system to determine the cause of the failure. If the air brake system is not operating correctly, you must take the semi-trailer to a certified mechanic for inspection.

Performing Regular Maintenance on the Air Brake System

Regularly maintaining the semi-trailer's air brake system is essential to ensure its safety and reliability. You should perform preventive maintenance on the air brake system to prevent faults. Ensure that you check the brake system's components, such as the air compressor, air tanks, valves, and hoses. You should also conduct an air brake system test according to the manufacturer's recommendations.

Conclusion

Semi-trailers are a significant part of the transportation industry, and their brake system is critical to their safe operation. Releasing semi-trailer brakes without air requires using the emergency brake lever. Regular maintenance of the air brake system can prevent brake failure. Remember to inspect your air brake system, and if in doubt, seek professional help. With proper maintenance, you can ensure your semi-trailer operates safely on the roadways.