Service · Safety
Heavy-Truck Air Brake Service in Jackson, MS
Air brake service is the #1 DOT failure point and the #1 safety system on a heavy truck. Wilkerson's services the full air-brake system on Class 7–8 diesel trucks at our Jackson, MS shop — air dryers, valves, lines, chambers, slack adjusters, drums, rotors, shoes, pads, ABS modulators. Brake adjustment and chamber inspection are part of every PM visit by default. They're free insurance against the most common DOT write-up there is.
Most air-brake work is same-day. Air leaks (couplers, glad-hand seals, valves, lines), brake adjustment, pad and shoe replacement, wheel-seal replacement — these are bread-and-butter for us. Chamber rebuilds and slack-adjuster replacement bump into next-day. Either way, you get a written estimate before any work starts.
We're certified on heavy-truck air-brake standards. Written warranty on every covered repair. If a brake repair fails inside the term, we fix it — no re-diagnosis charge.
What's included
Everything we do on a air brake service visit.
Air-leak diagnosis & repair
Full system pressure test. Glad-hand seals, couplers, valves, lines, tank fittings. Often same-day.
Brake adjustment
Measured and adjusted to spec. #1 DOT out-of-service item. Part of every PM visit.
Chamber & spring-brake service
Inspection, rebuild, replacement. Service and parking brake systems.
Pad, shoe, drum, rotor replacement
Foundation brake work. Common-failure parts in stock.
Slack adjuster service
Auto-slack inspection and replacement. Manual-slack work where applicable.
Air dryer service
Cartridge replacement, dryer rebuild, purge-valve work. Annual interval recommended.
Wheel-seal replacement
Caught early on PM, this is a same-day job. Caught late, it's a multi-day tow.
ABS diagnostics
Code pull, sensor and modulator work. ABS faults are DOT failures.
Signs you need this
When to call us.
Most of these symptoms point to the work on this page. A few point somewhere else — and we'll tell you straight either way.
- Hissing you can't track down with the engine off
- Brakes pulling to one side under hard application
- Pulling air faster than usual after release
- ABS light on the dash
- Glazing smell from a wheel-end
- Spongy or low pedal feel
- Coming up on annual DOT and brakes haven't been touched
Pricing & estimates
No surprises on the invoice.
Most common air-brake work — leaks, pads, adjustment, wheel seals — is same-day with published flat-rate or written estimate up front. Written warranty on every covered repair.
Our process
No surprises between the call and the invoice.
Four steps from the first call to the keys back in your hand. No mystery, no upsell theater.
- 01/Step
Call us
A real person answers the phone. We'll tell you straight whether your job is in scope and book you in if it is.
- 02/Step
Written estimate
We diagnose and write up the work before we touch anything billable. You see the price and the parts before you approve.
- 03/Step
You approve
Nothing happens without a green light from you. If we find more during the repair, we stop and call before we keep going.
- 04/Step
Repair + written warranty
Same name on the invoice every time. Our own written warranty on covered work — and the family promise behind it.
Why Wilkerson's
Three reasons people keep coming back.
- Most brake work
- Same day
- Brake adjustment
- DOT-ready
- Common parts
- On the shelf
Air leaks, pads, adjustment, wheel seals are usually same-day if you call ahead. Don't run derated, don't run unsafe.
We adjust to spec and document it. If you're 30 days out from annual DOT, get a free adjustment check now.
Chambers, pads, drums, dryers, wheel seals — we stock the common-failure parts so the truck doesn't sit waiting on a counter pickup.
Frequently asked
What people ask before they bring the truck in.
Tap any question to expand the answer.
Most of the time, yes. Bring the truck in during shop hours — we'll pressure-test the system, find the leak (glad-hand, valve, line, fitting), and most are same-day fixes. Hidden leaks behind firewall or in dash valves take longer.
Modern auto-slack adjusters self-adjust within design tolerances, but they should be measured at every PM and any time you've replaced friction or chambers. Out-of-adjustment brakes are the #1 DOT failure — we check at every PM by default.
Brakes are the #1 DOT failure point. If your brakes are adjusted to spec, your chambers are healthy, your wheel seals aren't leaking, and your air system passes a leak-down test, you've eliminated the biggest DOT risk on the truck.
Yes. We service both air-drum and air-disc systems. Air-disc is increasingly common on newer Class 8s — we have the tools and the parts access for both.
Our own written warranty on covered parts and labor — we stand behind every covered repair.
Most of the time, yes. Bring the truck in during shop hours — we'll pressure-test the system, find the leak (glad-hand, valve, line, fitting), and most are same-day fixes. Hidden leaks behind firewall or in dash valves take longer.
Brakes are the #1 DOT failure point. If your brakes are adjusted to spec, your chambers are healthy, your wheel seals aren't leaking, and your air system passes a leak-down test, you've eliminated the biggest DOT risk on the truck.
Our own written warranty on covered parts and labor — we stand behind every covered repair.
Modern auto-slack adjusters self-adjust within design tolerances, but they should be measured at every PM and any time you've replaced friction or chambers. Out-of-adjustment brakes are the #1 DOT failure — we check at every PM by default.
Yes. We service both air-drum and air-disc systems. Air-disc is increasingly common on newer Class 8s — we have the tools and the parts access for both.
Air brake service done right. Call us.
Mon–Fri · 7am–5pm · Saturday · 7am–12pm