Air Leak Emergency? Your Brakes Could Lock Up
We Fix It Same Day for Trucks & Fleets in Dallas
Losing air fast? Hearing a loud leak? Brakes locking?
Stop immediately — an air leak is one of the most dangerous failures in a heavy truck.
We repair air line leaks, blown fittings, tank leaks, valve failures, and parking brake lock-up
the same day for trucks and fleets across Dallas–Fort Worth.
Salazar Semi-Truck Repair Inc. — 2323 Chalk Hill Rd, Dallas, TX 75212
Why Drivers & Fleets Call Us First for Air Leak Emergencies
- Air system specialists: Daily repairs of line leaks, blown fittings, cracked tanks, valve failures, and sudden pressure loss.
- Heavy-duty only: We do not work on cars — only semi-trucks, box trucks, and commercial fleets.
- Root-cause diagnostics: Pressure decay testing, leak isolation, valve function testing, and air system mapping.
- Fleet-friendly workflow: Photos, notes, unit numbers, mileage, and PM recommendations.
- PO / EFS: Available for approved fleet accounts.
- Same-day repair capability: Most air leaks are repaired within hours, depending on severity.
What Makes an Air Leak So Dangerous?
An air leak is not just a minor problem — it can cause a complete loss of braking capability or force the truck into automatic parking brake lock-up. Depending on the source, an air leak may:
- Drop system pressure below 60 PSI, triggering audible alarms.
- Activate the spring brakes — locking the truck where it sits.
- Disable the tractor protection valve, losing air to the trailer.
- Create unsafe brake imbalance, pulling the truck to one side.
- Cause ABS failure, extending stopping distance.
If the truck is losing air fast, moving it is extremely dangerous. Drivers should stop the unit, chock wheels if necessary, and call for diagnostic support immediately.
Most Common Air Leaks We Repair Daily
- Blown air lines: chafed, cut, melted, or disconnected hoses.
- Damaged fittings: quick-connect failures, loose push-to-connects, cracked couplers.
- Air tank leaks: rusted tanks, failing drain valves, cracked welds.
- Valve failures: relay, foot valve, PPV, tractor protection, inversion valves.
- Trailer air leaks: glad-hands, supply lines, emergency lines, or trailer ABS issues.
- Supply-side leaks: compressor discharge, governor issues, air dryer purge leaks.
How We Diagnose an Air Leak in Minutes
Our technicians use a combination of industry-standard and dealer-level diagnostic steps, including:
- Pressure decay test: Is the system dropping too fast?
- Leak isolation: Identifying which circuit (primary, secondary, trailer, supply) is losing pressure.
- Soap & sound test: Pinpointing external leaks down to microbubbles.
- Valve operation test: Ensuring valves are sealing and releasing correctly.
- Air dryer inspection: Checking purge valve or frozen desiccant issues.
Symptoms That Mean You Need Air Leak Repair Now
- Loud hissing sound under cab, near tanks, trailer lines, or firewall.
- Air pressure dropping while parked or while driving.
- Truck taking too long to build air to 120 PSI.
- Parking brakes won’t release or re-engage suddenly.
- Constant compressor cycling — running hot or not catching up.
- ABS light turning on after pressure drops.
If you notice any of these, the truck should not continue driving.
Our Emergency Air Leak Repair Process
- Call diagnosis: You tell us exactly what you hear, see, or feel — we identify the likely failure zone.
- Safety confirmation: We guide you on whether the truck can move or must stay parked.
- On-site or shop diagnostics: Full leak isolation, valve testing, and system recovery.
- Clear estimate: You receive an upfront quote before major repairs.
- Repair: We replace damaged lines, fittings, valves, or tanks — and fix the root cause.
- Pressure recovery test: Ensuring the system builds and holds proper pressure.
- Fleet report: Photos, notes, and recommendations to avoid repeat failures.
For Drivers
Tell us what you hear: Is it a loud hissing? A slow leak? Is the truck not releasing? We translate your description into a real diagnosis — no complicated shop talk. Your safety comes first.
For Dispatchers
You receive live updates, ETAs, photos, and repair notes so you can reroute loads, notify customers, and keep freight moving without guessing.
For Fleet Managers
Every air leak repair includes unit number, mileage, fault codes, replaced parts, and PM recommendations. Air leaks often signal underlying issues — we help you eliminate repeat failures across your fleet.
An Air Leak Can Shut Down Your Entire Operation — Fix It Before It Costs You Thousands
Air leaks don’t wait. Every minute you delay increases the risk of DOT violations, brake lock-ups, failed deliveries, tow bills, angry customers, and expensive downtime. A simple leak can turn into a full system failure — and once your parking brakes lock, you're not moving anywhere.
Fixing the leak NOW is always cheaper than losing a load, missing a deadline, or paying for a tow. Your truck — and your revenue — are on the line.
Air Leak Emergency – Frequently Asked Questions
No. Driving with an air leak can cause your brakes to lock or fail completely. Stop in a safe place and call a heavy-duty specialist.
This usually indicates a leak in a valve, line, tank, or fitting. We can isolate the failing component in minutes once we inspect the unit.
Yes. Small leaks often become major leaks quickly because pressure changes force valves and seals to fail under stress.
Yes, depending on availability. Otherwise the truck can be brought or towed to our shop for immediate repair.
Most leak repairs take 1–3 hours depending on the location and severity.
Same-Day Emergency Air Leak Repair in Dallas, TX
Don’t risk your load, your schedule, or your safety. Call now or head directly to our shop — we’ll diagnose your air system and get your truck back on the road fast.
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