Brake Troubleshooting
When brakes drag, lock or feel wrong, quick troubleshooting identifies whether it's an air, adjustment or component problem.
- AvailabilityCalls and messages 24/7
- WhereRoadside, yard or jobsite
- CategoryRoadside & Emergency Assistance
- On-site repairWhere feasible and safe
About brake troubleshooting.
When brakes drag, lock or feel wrong, quick troubleshooting identifies whether it's an air, adjustment or component problem.
A mobile mechanic can look at the unit where it stands, whether that is the roadside, a yard or a jobsite. That can avoid a tow and shorten downtime when the fault is suited to on-site work.
Part of Roadside & Emergency Assistance.
When you might need it.
Any of these is a good reason to call and describe what the unit is doing.
Brakes dragging or locked
Weak braking
Warning lights
Burning smell
What the service involves.
Checking air supply and pressure
Inspecting wheel ends and chambers
Isolating the faulty circuit
Recommending repair
Causes and good habits.
These are possibilities, not a diagnosis. The only way to know is to test the unit.
Possible causes
- Air supply issues
- Seized or out-of-adjustment brakes
- Valve faults
Practical tips
- Note which wheels are hot or dragging
- Do not drive a unit with unsafe brakes
What to expect.
Unsafe brakes mean the vehicle must not be driven.
On-site repair depends on the fault, parts, vehicle condition, safety and service feasibility.
(437) 601-8551Before you call
- Exact location, and direction of travel on a highway
- Truck or trailer type, make and year if known
- What happened and what warnings you see
- Whether the unit is somewhere safe
- A number we can call back
From the first call to the fix.
Call or message
Tell us where the unit is.
Describe the fault
Symptoms, lights, noises, leaks.
Agree the plan
Feasibility and dispatch, discussed honestly.
Diagnose and repair
On site where it is possible and safe.
Services that often go together.
Brake System Repair
Brakes are the most safety-critical system on a commercial vehicle.
Trailer Brake Repair
Trailer brakes take a lot of abuse.
Emergency Air Leak Repair
A major air leak can leave a truck or trailer unable to move safely.
ABS Diagnostics & Repair
A lit ABS lamp on the trailer indicates a fault in the anti-lock system.
Frequently asked questions.
Why are my trailer brakes locked?
Common causes include air supply problems and failed valves. Call with details.
How do I request this service?
Call (437) 601-8551 or message us on WhatsApp with your location and the issue. For non-urgent work, use the contact form.
Can every repair be done on site?
No. It depends on the fault, parts, vehicle condition, safety and feasibility.
Stranded on the Road? Let's Talk.
Tell us where your truck or trailer is located and what happened. Contact Fellows to discuss mobile repair options and next steps.
(437) 601-8551Have ready: exact location, truck or trailer type, what happened or what warnings you see, whether the unit is somewhere safe, and a callback number. Timing, dispatch and on-site repair depend on location, availability, the fault, parts and safety.