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Truck Air Leak Repair: What to Do and Who to Call

The All Roadside Assistance answer: An air leak can set the brakes or keep the truck from building pressure. Call a mobile mechanic or trailer repair service. Many air line and glad hand fixes are done at the roadside.

First steps

  1. Stop where it is safe and watch the air pressure gauges.
  2. Listen with the engine off to find where the hiss comes from.
  3. Check the glad hands, seals and the lines between the tractor and trailer.
  4. Do not move the truck if the pressure will not build.

Why it happens

Common air leaks come from worn glad hand seals, cracked air lines, leaking brake chambers, valves and fittings. A mobile mechanic or trailer repair service can often find and fix the leak at the truck.

What to tell the provider

Whether the leak is on the tractor or the trailer, where you hear it, whether pressure builds, and your exact location.

How we pick the providers

All Roadside Assistance is a directory. We do not dispatch trucks or take a share of any job. On each town page we list providers whose listing data matches this problem, closest first, within 30 miles of the town center, or 50 miles when fewer than 3 are closer. You call the business directly. Confirm availability, capability and price on the phone.

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Towns with the most providers

Somewhere else? Use your location or search by town, ZIP, highway or exit.