January 15th, 2015 | Phoenix Truck Driving Institute

Knowing how your vehicle works gives you an advantage when you start driving a truck for a living. If you want to drive as safely and as efficiently as possible, it is important to have at least a basic understanding of how the truck works. Keep reading for some information about how truck brakes function:

Creating Friction

The basic principle of any kind of vehicle brake is to create friction to reduce the force that is causing the vehicle to drive. Trucks and cars both have brake drums, brake pads, and brake shoes that connect to the axles on the wheels. Trucks used compressed air to keep the brakes working properly. Since air never runs out, this makes the braking system in a truck very effective.

Using Service Brakes

A trucker will use the service brakes for normal braking needs. This system moves air through the brakes to turn the camshaft and the brake drum. During this process, air travels through the pushrod, to the slack adjuster, and into the brake linings.

Pulling the Parking Brake

Since a truck is such a big vehicle, a driver will often use the parking brake to keep the vehicle in place when it is stopped. Once the driver pulls the parking brake valve on the dashboard, springs pop out inside the chamber to initiate the service brake process.

Using the Emergency Brake

The emergency brake system uses a combination of the service and the parking brake systems. The driver uses this brake system if the other two have failed. Compressed air keeps the emergency brake in place until a driver needs to use it.

If you are interested in working as a commercial driver, sign up for the truck-driving school at Phoenix Truck Driving Institute. Our programs are designed to teach you all the skills you need to successfully start working as a truck driver. To learn more about our programs or our admissions process, visit us online or call (877) 205-5372.