Mobile Air Brake Repair for Trucks & Trailers

Text Langley Mobile Truck Repair on 778-887-5216. Air brakes are core work for us and a truck with locked brakes cannot be driven to a shop, so this is a mobile job by definition. We cover Highway 1 through Langley and Abbotsford, Highway 15 and 13 to the border, and the Golden Ears and Port Mann approaches, 24 hours. Get as far right as the truck allows and put your triangles out before anything else. $130/hour, no call-out fee, and we carry airline, valves, chambers and dryers on the truck.

Usually, yes. Stuck trailer brakes commonly come down to a supply issue, a failed valve, or a spring brake that needs caging and replacement — all workable at the roadside or dock if you're parked somewhere safe. Text 778-887-5216 with your location and what the trailer is doing, and don't force it: dragging locked brakes flat-spots tires fast.

If the compressor holds governed pressure at idle and the leak-down is within limits, you may legally be able to drive — but a leak never gets better on its own. If pressure is dropping toward the 60 psi warning range, stop somewhere safe and call or text. Diagnosing a leak is quick work for us; a low-air emergency on a loaded bridge crossing is not.

Yes — inspection and adjustment of manual and automatic slack adjusters is routine mobile work. If an automatic adjuster repeatedly needs manual adjustment, that's a failing adjuster or foundation issue, and we'll show you the wear rather than just re-adjusting the symptom away.

Almost always air, not the brakes. Spring brakes are held OFF by air pressure, so anything that drops or blocks that air lets the spring apply them. The usual causes are a leak, a spent air dryer letting moisture through, a stuck spring brake or dash valve, or a frozen line, which is common in the Fraser Valley from November onward. Below roughly 60 psi they apply themselves by design, which is the system working rather than failing.

In order of how often we find it: low system pressure from a leak somewhere in the circuit, a purge valve or dryer fault, a seized brake chamber or corroded push rod, a failed spring brake control valve, and ice in the lines. On a trailer, a supply issue or a blocked gladhand is a frequent culprit. Text 778-887-5216 with what the gauges read and we can usually narrow it before we arrive.

That points at supply reaching the trailer rather than the brakes themselves. Check the gladhands are properly seated and the lines are not crossed, then look at system pressure: if the tractor is not holding above the spring brake trip point, the trailer will never charge. A blocked or frozen supply line, a failed relay or spring brake valve, or a seized chamber will all produce it. Do not force the truck to move with them dragging, because that flat spots tires fast.

In BC, brake adjustment on a commercial vehicle should be done by someone trained and competent to do it, and inspection-related brake work belongs with a qualified heavy duty mechanic. We inspect and adjust manual and automatic slack adjusters as routine mobile work at your yard or the roadside. If an automatic adjuster repeatedly needs manual adjustment, that is a failing adjuster or a foundation problem, and we will show you the wear rather than adjust the symptom away.

Foundation brake work — shoes, drums, hardware — is regular yard-call work with the truck safely blocked and the parts on hand. We'll quote the time honestly by text first; parts come from the dealer or brake supplier at their invoice price with zero markup.