Class 8 Mobile Repair & Roadside Service
From emergency roadside semi truck repair to scheduled fleet maintenance — Road Wrench is your 24/7 mobile semi truck mechanic. We bring the shop to you, anywhere in Arizona.
Call (480) 849-5261No Tow. No Wait. Mobile Trailer Repair & Semi Truck Repair On-Site.
When your Class 8 truck or trailer goes down, every hour costs money. Road Wrench dispatches immediately to your location — highway shoulder, rest stop, truck stop, or your yard. Our mobile service units carry the tools and parts to handle most roadside semi truck repairs and mobile trailer repairs on the spot.
Emergency Roadside Repair
Broken down on I-10, I-17, or US-60? We dispatch immediately. Our mobile units are equipped to handle most roadside failures on the spot — no tow required.
- Immediate dispatch, day or night
- On-site diagnosis and repair
- No tow truck needed in most cases
- Phoenix Metro & Surrounding Areas coverage
- All major highways and interstates
Engine Diagnostics & Repair
Professional-grade diesel engine diagnostics using the latest scan tools. We identify fault codes, diagnose the root cause, and perform repairs on-site — getting you back on the road fast.
- Full ECM/ECU diagnostic scanning
- Fuel system diagnosis and repair
- Turbocharger inspection and service
- Cooling system repairs
- Injector and pump service
Brake Systems
Air brake inspection, adjustment, and repair for trucks and trailers. Safety-critical work performed to DOT standards — we don't cut corners on brakes.
- Air brake inspection and adjustment
- Brake chamber replacement
- Slack adjuster service
- Brake drum and shoe replacement
- DOT brake compliance inspection
Electrical & Wiring
Trailer lighting failures, chassis wiring faults, alternator issues — we diagnose and repair all heavy duty electrical systems on-site.
- Trailer lighting and ABS systems
- Chassis and cab wiring repair
- Alternator and starter service
- Battery testing and replacement
- Gladhand and connector repair
Trailer Repairs
Suspension, landing gear, seals, and structural trailer repairs handled at your location. We work on all trailer types — flatbed, dry van, reefer, and more.
- Suspension and spring repair
- Landing gear service and replacement
- Door seals and hardware
- Mudflap and bracket repair
- Reefer unit basic service
Preventive Maintenance
Scheduled PM services to keep your fleet running and avoid costly breakdowns. We come to your yard or terminal — no need to take trucks out of service for a shop visit.
- Oil and filter changes
- Fuel filter service
- Coolant system flush
- Belts and hoses inspection
- Full pre-trip inspection service
Need Service Now?
Call us 24/7 for emergency dispatch or to schedule a service appointment.