
Coupling & Fifth-Wheel-Related Repairs
Couplings and fifth wheels hold the tractor and trailer together. Faults here are safety-critical and need careful attention.
- AvailabilityCalls and messages 24/7
- WhereRoadside, yard or jobsite
- CategoryTrailer Repair
- On-site repairWhere feasible and safe
About coupling & fifth-wheel-related repairs.
Couplings and fifth wheels hold the tractor and trailer together. Faults here are safety-critical and need careful attention.
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 Trailer Repair.

When you might need it.
Any of these is a good reason to call and describe what the unit is doing.
Difficulty coupling or uncoupling
Worn or damaged jaws
Excess play
King pin damage

What the service involves.
Inspecting the coupling surfaces
Checking locks and release mechanisms
Repairing or replacing accessible parts
Verification
Causes and good habits.
These are possibilities, not a diagnosis. The only way to know is to test the unit.
Possible causes
- Worn jaws or king pins
- Lack of lubrication
- Misalignment during coupling
Practical tips
- Check the coupling after every hook-up
- Keep the fifth wheel plate greased

What to expect.
Structural or safety-critical damage may require workshop repair. Do not use a damaged coupling.
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.

Landing Gear Repair
Landing gear that jams, collapses or won't crank creates a hazard and blocks coupling.

Trailer Preventive Maintenance
Routine inspection catches brake, wheel-end and lighting issues early.

Trailer Suspension Repair
Trailer suspension supports the load and affects tire wear and stability.

Mobile Trailer Repair
Mobile trailer repair deals with trailer brake, air, ABS, lighting, wheel-end and suspension faults where the trailer is parked, saving a trip to a shop..
Frequently asked questions.
Is coupling wear dangerous?
It can be. Have worn couplings inspected promptly.
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.