What is the clunk noise caused by when I brake and accelerate ?
Most of our trailers are built with a ‘Surge’ Brake Actuator. These devices are actuated by the kinetic force of the trailer still wanting to move forward when the tow vehicle starts to slow down quicker than the trailers natural loss of speed. This action of the trailer compresses the Actuators sliding components and actuates the brakes through a hydraulic system similar to a cars. When forward towing, a vehicle exerts a force that pulls on the nose of the trailer and keeps the brakes in their released position. The Clunk you hear is the actuator returning to its natural position. It is possible that the braking system on your trailer needs to be serviced. If the brake shoes are out of adjustment or the hydraulic system is dry or has air in it, you will have excessive movement in the actuator causing a louder than normal clunking. This condition may effect the braking of your trailer and it may be necessary to have your trailer serviced by a qualified technician.
