Truck Brake Repair Services
in Salem, Oregon

Heavy-duty trucks and the cargo they carry are extremely heavy and, as such, need strong braking systems to compensate. Over time, brake pads wear down, brake adjusters malfunction and air compressors may fail. To limit this wear and tear as much as possible, we highly recommend coming in for regular brake inspections. 

Heavy-Duty Brakes Repair Service Salem, OR

About Our Brake Repair Services for Trucks & Fleets

How Do Semi Truck Brakes Work

Compressed Air

Rather than using brake fluid like small passenger cars, semi-trucks use compressed air. 

Every heavy-duty truck that uses air brakes will have a compressor, a dryer, several air tanks, and service chambers. Your compressor is responsible for filling your air tanks with compressed air, your dryer is responsible for removing moisture from that air, and your air tanks store it until needed. Remember to service the air dryer regularly. 

Drum Brakes

Drum brakes are a common brake system on heavy-duty trucks. When compressed air enters your service chamber, it compresses the chamber’s diaphragm. This diaphragm then pushes down a push rod, which is connected to a clevis and your brake adjuster. Your brake adjuster is connected to a rotating shaft using splines. When your brake adjuster moves, it rotates the shaft. This shaft is connected to your brake shoes by a large S cam on the end of the shaft. This S cam rotates with the shaft and makes your brake shoes expand. On the outside of each brake shoe is a brake pad, which gets pushed against your brake drum. This brings your truck to a stop. 

Contact Us for Brake Repair Service Today!

Want to hear more about how semi-truck brakes work? Call today.