Category: Trucks

Brake Pad Replacement: What Are Air Brakes?

We rely on trucks every day to deliver various goods from suppliers to retailers or to courier goods to specific destinations. They transport our food, clothing and other supplies that we need and want. Air brakes are often used in larger or heavy duty vehicles. Because air can be found so easily all around, it is easier to use the gases from air to operate the braking systems of trucks and other big vehicles.

In trucks, foundation air brakes are the most common systems found. This system uses the triple valve principle that was originally invented in the late 1800’s. The air fills up inside the brake pipes releasing the brakes.

When the truck is in an idle position, the air pressure will overcome the diaphragm or S-Cam (a cam shaped like an “s” that pushes the brake shoes apart and against the brake drum) into a closed position which …