Trailers

Mobile Trailer Repair in Fort St. John, BC

Trailers get the least attention and the most abuse. They sit outside all winter, get dropped in gravel yards, run loaded over frost heaves, and only get looked at when something fails an inspection or a light quits on the highway. Then the whole load stops over a $40 part.

We repair trailers where they sit — in your yard, at a loading site, or on the shoulder of Highway 97. That covers brakes and air systems, lighting and wiring, suspension and springs, landing gear, doors and latches, and the wheel-end work that keeps a trailer legal and safe. If you're pulling it commercially in northeastern BC, we can service it.

Trailer problems we fix

Trailer electrical and lighting faults

Intermittent markers, a dead brake light circuit, ABS lamps that won't go out, corroded plugs and pigtails, and chafed harness runs along the frame. Trailer wiring is exposed to road salt and vibration constantly, and most faults trace to a connector or a rubbed-through wire rather than a failed lamp.

Trailer brake problems

Out-of-adjustment slacks, worn linings, cracked drums, seized S-cams, and chambers with failed diaphragms. Brakes that drag heat wheel ends and destroy seals and bearings, so a brake problem rarely stays only a brake problem.

Air leaks and glad hand issues

A trailer that bleeds air overnight or won't release its brakes usually has a leaking line, valve, chamber or glad hand seal. We find and fix the leak rather than leaving you to guess which axle it's on.

Suspension and spring failures

Broken leaf springs, worn bushings, failed air bags, cracked hangers and blown shocks. Common on gravel and lease road work, and they cause uneven tire wear and load instability long before anything visibly breaks.

Wheel-end and bearing trouble

Leaking hub seals, low or contaminated oil in the hub, hot bearings and loose wheel ends. A hub running hot is a stop-now problem — bearing failure at speed can take the wheel off.

Landing gear, doors and hardware

Bent or seized landing gear, stripped gearboxes, damaged door hinges and latches, broken mud flap hangers and rub rails. Small items, but they stop a load just as effectively as a mechanical failure.

Signs a trailer needs service before its next load

  • Lights that flicker over bumps or work only when the plug is wiggled.
  • The ABS lamp stays lit after the truck rolls forward.
  • Air pressure drops overnight with the trailer coupled.
  • One wheel end is noticeably hotter than the others after a run.
  • Grease or oil slung around a hub or across the inside of a wheel.
  • The trailer sits visibly low or off-level on one side.
  • Uneven or feathered tire wear that comes back after new rubber.
  • Landing gear that binds, wobbles or takes far more effort than it should.

How trailer service calls work

Trailer work is often quicker and cheaper than people expect, especially when several small items get handled in one visit.

  1. 1
    Describe the trailer and the fault

    Type, axle configuration, brake setup, and what's failing. If it's an inspection list, read it out and we'll tell you what's realistic on-site.

  2. 2
    We bring trailer-specific supplies

    Lamps, wire, connectors, air line and fittings, seals, hardware and common brake components ride with the service truck.

  3. 3
    Repair at your yard or roadside

    Most trailer work needs nothing more than solid ground and safe access, whether it's coupled or dropped.

  4. 4
    Everything gets function-tested

    Lights checked through every circuit, air system leak-tested, brake adjustment verified before we sign off.

  5. 5
    We flag the rest

    Anything else that's worn or close to failing gets pointed out so it isn't a surprise at the next inspection.

Trailers we service

Everything pulled commercially around Fort St. John, plus the equipment trailers that farms and contractors run.

  • Highway vans and reefers
  • Flat decks, step decks and Super B trains
  • End dumps and belly dumps
  • Log trailers and self-loaders
  • Lowbeds and equipment floats
  • Tank and vac trailers
  • Pup trailers and jeeps
  • Gooseneck and bumper-pull equipment trailers
  • Farm and grain trailers

Trailer repair is dispatched from Fort St. John, with regular calls in Charlie Lake, Taylor, Montney, Buick, Wonowon, Hudson's Hope, Dawson Creek and Chetwynd, along with the highway corridors in between. See the full service area.

Why fix trailers on-site

The load keeps moving

Trailer faults are usually small parts and big consequences. Fixing them where the trailer sits avoids a shop trip over a lamp or a slack adjuster.

Inspection items handled together

A list of small defects gets cleared in one visit rather than one bay booking per item.

We check the whole trailer

While we're under it, you find out what else is close to failing — which is far cheaper to hear in your yard than at a roadside inspection.

Trailer repair questions

Can you fix a trailer that's still loaded?

Often yes. Lighting, wiring, air leaks and many brake components can be handled loaded if the trailer can be supported safely. Wheel-end and suspension work sometimes requires unloading, and we'll tell you before starting.

Can you chase an intermittent light problem?

Yes, and it's one of the most common trailer calls. It takes proper circuit testing rather than swapping bulbs, but the fault is almost always findable — usually a corroded pin, a rubbed wire, or a poor ground.

Do you work on trailer ABS faults?

We diagnose ABS wiring, sensors and connector faults, which cause the large majority of trailer ABS lamps. Failures inside a modulator or ECU may need a component replaced, and we'll tell you which case you're in.

Can you repair a trailer at a customer's loading site?

If it's safe and we have access, yes. Some industrial sites have entry requirements, so mention that when you call.

Do you do trailer inspections?

We can go through and repair the items a CVIP will catch, but the inspection certificate itself has to come from a licensed facility.

What about frame or crossmember damage?

General welding and repair on brackets, mounts and light structural items can be done in the field. Major frame damage is shop and certification territory, and we'll say so.

More answers on the general service FAQ.