Semi Truck Air Brake Repair Jerome, Idaho
Looking for semi truck air brake repair in Jerome, Idaho? If your truck won't build air, leaks down overnight, or the low-air buzzer keeps sounding, park it and call The Semi Shop at (208) 696-9888. We fix air brake systems in our Jerome bays and at the roadside anywhere on I-84 from Bliss to Declo.
What does air brake repair include?
Everything from the compressor to the shoes. We repair and replace air compressors, air dryers and cartridges, governors, treadle and relay valves, brake chambers, slack adjusters (manual and automatic), pushrods, air lines and fittings, and the foundation brakes themselves — shoes, drums, and hardware.
We work on all the trucks running this corridor: Kenworth, Peterbilt, Freightliner, Western Star, Volvo, Mack, and International, plus trailer brakes on dry vans, flatbeds, cattle pots, and dairy tankers. A leak on the trailer side strands you just as fast as one on the tractor.
How long does air brake repair take?
It depends on what we find. A leaking fitting or a bad chamber is often a same-day fix, and many air leaks get handled right on the roadside. A compressor swap or a full foundation brake job on multiple axles takes longer, and we'll give you a straight answer on timing once we've seen the truck. We're open 7 AM to 10 PM every day, so you're not losing a whole day waiting for a bay to open.
What will it cost?
We diagnose first, then quote — and the price we quote is the price you pay. For roadside calls, the flat call-out fee is stated before we roll. Nobody starts wrenching until you've said yes to a number.
One more thing worth saying plainly: brakes are the system DOT officers check hardest, and out-of-adjustment brakes are one of the most common out-of-service violations in the industry. Fixing a soft brake now is a lot cheaper than an out-of-service order at the scale.
Air brakes and Magic Valley winters
Cold snaps are hard on air systems. Moisture in the tanks freezes in valves and lines, and a tired air dryer lets that water through all winter. If your brakes drag on a January morning or the truck is slow to release, that's usually ice or a failing dryer cartridge, not your imagination. Before winter freight season, have us check the dryer, drain schedule, and system for leaks — it's the cheapest brake work you'll ever buy.
Driver questions
My truck won't build air. Can you come to me?
Yes. That's one of our most common roadside calls. We cover every I-84 exit from Bliss to Declo, 7 AM to 10 PM daily. We state the flat call-out fee before we roll, and most air leaks get fixed where the truck sits.
How fast should a truck build air pressure?
A healthy system builds from 85 to 100 psi in well under a minute at operating RPM. If yours takes much longer, or you hear steady leaking with the engine off, the system needs attention before you haul another load.
Do you fix trailer brakes too?
Yes. Chambers, valves, slack adjusters, shoes, and drums on dry vans, flatbeds, cattle pots, and dairy tankers — brands like Great Dane, Utility, and Wabash. Truck and trailer brakes both get done under one roof in Jerome.
Shop bays in Jerome or mobile to any I-84 exit, Bliss to Declo · 7 AM–10 PM every day · The price we quote is the price you pay.