Semi-Trailer Repairs Gladstone & Calliope
Commercial semi-trailer repairs, fault diagnosis and preventative maintenance for transport operators, owner-drivers and fleets across Gladstone, Calliope and surrounding Central Queensland areas.
Total Mobile Mechanical Services repairs trailer brakes, wheel bearings, hubs, seals, suspension, air-system faults, ABS/EBS connections, lighting and running gear. Prime mover and trailer faults can be assessed through one business, helping reduce downtime and avoid sending connected problems to separate workshops.
A trailer fault can affect braking, stability, tyre life and the safety of the complete combination. We inspect the connected components rather than replacing the first part associated with the symptom.
Semi-Trailer Repair and Maintenance Services
Our semi-trailer repair service covers mechanical, pneumatic and electrical faults affecting the trailer and its connection to the prime mover.
- Trailer brake inspections, diagnosis and repairs
- Wheel-bearing adjustment and replacement
- Hub, seal and wheel-end repairs
- Brake-drum, shoe, chamber and slack-adjuster concerns where fitted
- Air-line, hose, fitting, valve and accessible air-leak repairs
- Suspension bushes, springs, airbags, hangers and torque-rod concerns
- ABS/EBS sensors, wiring, connectors and power-supply diagnosis
- Road lights, trailer plugs, sockets and inter-vehicle wiring
- Wheel-end heat, movement, noise and lubricant-loss diagnosis
- Uneven tyre wear and running-gear inspections
- Landing-leg and accessible mechanical repairs
- Preventative trailer inspections and defect repairs
- Planned maintenance for individual trailers and fleets
Semi-Trailer Brake and Air-System Repairs
Air loss, uneven braking, dragging brakes, overheating or brakes failing to apply or release can involve more than one component. Possible causes include air lines, fittings, valves, brake chambers, slack adjusters, foundation brakes, wheel ends or the prime-mover connection.
Our inspection process considers the complete operating system before major parts are authorised. Where the fault involves the truck as well as the trailer, connected work can be coordinated through our TRUCK AND TRAILER BRAKE REPAIRS service.
Brake faults should not be ignored merely because the trailer can still be moved. Heat, air loss or uneven braking can quickly damage additional components and make the combination unsafe to operate.
Trailer Wheel Bearings, Hubs and Seals
Wheel-end heat, bearing noise, lubricant leakage, wheel movement or damaged seals require prompt inspection. Continuing to operate the trailer can damage the bearing, hub, spindle, brakes and wheel-mounting components.
Wheel-end assessment may include:
- Bearing condition and adjustment
- Hub and bearing-seat condition
- Seal and sealing-surface inspection
- Oil or grease condition
- Spindle condition where accessible
- Brake contamination caused by leaking seals
- Wheel studs, nuts and mounting surfaces
- Signs of overheating or previous bearing failure
A bearing replacement alone is not always an adequate repair. The remaining hub, spindle, seal surfaces, brakes and wheel mounting must also be considered.
Trailer Suspension and Running-Gear Repairs
Trailer suspension faults can affect stability, tracking, ride height, tyre wear and load distribution. Worn bushes, damaged springs, leaking airbags, loose hangers, worn torque rods and wheel-end movement can create similar symptoms.
Uneven tyre wear should be investigated before another set of tyres is fitted. Replacing tyres without correcting the underlying suspension, axle or wheel-end fault can quickly damage the new set.
Where a trailer has poor tracking or repeated tyre wear, we inspect the accessible running gear and identify the repairs or further measurements required.
Trailer ABS, EBS, Lighting and Electrical Faults
Trailer ABS or EBS warning faults can involve wheel-speed sensors, tone rings, wiring, connectors, power supply, wheel-end movement or communication with the prime mover.
Road-light, plug and socket faults may also need to be tested with the truck and trailer connected. A trailer-side fault can appear to be a prime-mover fault, and a poor truck-side power supply can create problems across more than one trailer.
Connected 12-volt and 24-volt diagnosis is available through our TRUCK AUTO ELECTRICAL service.
Truck and Semi-Trailer Repairs Through One Business
Braking, air, lighting and electrical faults do not always stop at the coupling. Where practical, we can inspect the prime mover and trailer during the same booking and identify which side of the combination is causing the problem.
Truck mechanical repairs, diesel diagnosis, driveline work and connected faults are supported through TRUCK REPAIRS.
Combining the work can reduce repeated diagnosis, simplify repair approvals and return the complete combination to service sooner.
Preventative Semi-Trailer Maintenance
Planned maintenance can identify developing wheel-end, brake, air, suspension and electrical faults before they cause an on-road failure or extended downtime.
Maintenance can be coordinated with TRUCK SERVICING or a broader FLEET MAINTENANCE PROGRAM.
For commercial operators, provide the trailer details, operating conditions, service history and known recurring defects so the maintenance scope can be matched to the equipment.
Workshop and Mobile Trailer Repair Pathways
Major wheel-end, brake and suspension repairs generally require controlled workshop lifting, safe support and access to workshop equipment. Completing this work in the workshop also allows connected components to be inspected properly.
Suitable breakdown assessment and accessible repairs may be available onsite through our MOBILE MECHANIC AND 24/7 BREAKDOWN SUPPORT.
When contacting us about a breakdown, advise whether the trailer is loaded, its location, the fault, whether there is wheel-end heat or air loss and whether the combination can be moved safely.
Why Choose Total Mobile Mechanical Services?
- Six mechanics with more than 80 years of combined experience
- Heavy-commercial, diesel, mobile-plant and automotive electrical capability
- Truck and semi-trailer faults handled through one business
- Brake, wheel-end, suspension, air and electrical diagnosis available
- Testing before expensive component replacement wherever practical
- Clear explanations before additional work is authorised
- Workshop repairs supported by mobile and 24/7 breakdown capability
- Preventative maintenance for individual operators and commercial fleets
- Main workshop at 6 Wright Road, Calliope
Frequently Asked Questions
What semi-trailer repairs do you handle?
We handle suitable brake, bearing, hub, seal, suspension, air-system, lighting, trailer-plug and ABS/EBS-related repairs. The exact repair pathway depends on the trailer, fault, access and parts availability.
Do you repair semi-trailer brakes and air leaks?
Yes. We inspect trailer brakes, air lines, fittings, valves, chambers, slack adjusters and connected wheel-end components where applicable. Prime-mover interaction is considered when the fault affects the complete combination.
Can you replace trailer wheel bearings, hubs and seals?
Yes. Bearings, hubs and seals can be inspected and repaired according to their condition. The spindle, brakes, wheel mounting and signs of overheating are also considered before the repair is completed.
Do you diagnose trailer ABS or EBS warning faults?
Suitable systems can be scanned and the related sensors, wiring, connectors, power supply and wheel ends assessed. Some faults must be tested with the prime mover and trailer connected.
Can semi-trailer repairs be completed onsite?
Initial diagnosis and accessible repairs may be possible onsite. Major brake, wheel-end and suspension repairs normally require workshop lifting and safe support.
Can you service the prime mover and trailer together?
Yes. Truck servicing and trailer maintenance can be coordinated where the required work, workshop capacity and scheduling make a combined booking practical.
Do you offer preventative maintenance for fleets?
Yes. Planned trailer inspections and repairs can be coordinated with truck servicing and fleet-maintenance schedules.
Book Semi-Trailer Repairs in Gladstone or Calliope
Provide the trailer type, registration, current location, load status, fault, recent repair history and whether it can be moved safely. Mention any wheel-end heat, air loss, warning lights, unusual tyre wear or recent brake work.