How an Air Brake Chamber Works

What are Air Brake Chambers?

Before we talk about how an air brake chamber works? First we will uncover what is air brake chamber? An air brake chamber is considered as a key component of the air brake system in highway plus long haul 18-wheelers. Though the front and rear brake chambers of a vehicle are a little different, but they usually perform tasks in association with a set of huge drum brakes and hence have effect as an ordinary hydraulic assist function of a breaking system.

Front Brake Air Chamber:

Remember that the front brake air chambers are firm steel housings that are connected to an air compressor. Every air brake chamber has a pressure bleed valve as well as a push rod where this push rod have a spring which come back on the interior and a pressure plate the covers the width along with depth of the chamber. Air is pumped into the chamber from compressor at the moment when the brake pedal is depressed. Consequently the rod drives out with 1,000 pounds force.

On the other hand, the S-cam is a long rod that is found in the drum brake’s interior. While turning, S-cam push out the nearby brake shoes beside the wheel drums interior, striking the tires. Air pressure is useful for stopping the tires as fast as possible as the conventional hydraulic chambers are not capable to produce adequate fluid pressure in this case.

Rear Spring Brake Air Chamber:

Rear spring brake air chambers are usually carry out the same task as front brake air chambers do, although they also twofold as a parking brake, hence their design is quite complex. In fact they are considered as a dual chamber system. They have the push rod and air chamber as present in ordinary air chambers, however at the back of this chamber is a second one which holds a strongly coiled braking spring on a solid plate where this plate is quite similar to the plate the push rod ends with. It is tested by means of a latch which directly connects it to the parking break lever in the driver’s cab. When the pedal is depressed the brake performs as usual, however if the parking brake lever is set out, it result in the latch leaves away from the spring and then it manually forces the push rod ahead along with hundred pounds force.

To let free the parking brake, it is needed to depress the brake pedal, which result in filling air in the first chamber and compelling the spring back until unless the latch grasp its hold another time.