Air Brake Repair for Semi Trucks
Air leaks, low pressure, or dragging brakes are safety-critical. Don't roll on compromised air brakes.
Warning signs
Audible air leaks, slow pressure build, low-air warning/buzzer, dragging or grabbing brakes, and frozen lines in winter. Park safely and get a tech.
Common roadside fixes
Leaking fittings/airlines, faulty valves, slack adjusters, and frozen lines are routinely handled on-site by a mobile tech.
Call a brake tech
Find a listed provider near you that handles heavy-duty brakes, describe the symptoms and your location, and confirm its capability, timing, and pricing on the call.
FAQ
No — a significant air leak can cause sudden brake loss or spring-brake lockup. Park and get a tech.
Yes — most leaks, valves, and slack-adjuster issues are fixed on-site by a mobile heavy-duty tech.
Find a mechanic near you
When you're ready for hands-on help, use the RoadService.app directory to find listed providers in your area, with verified listings clearly labeled.