Full-Service Mobile Truck & Diesel Repair
From sudden highway derates to locked air brakes, B&B Mobile Truck Repair delivers dealer-grade diagnostic technology, heavy-duty parts, and veteran mechanics straight to your location in Dexter, MO and beyond.
Active Roadside Emergency? Don't Wait In The Cold.
If your truck is broken down on US-60, I-55, I-57, or local Missouri state routes, our priority emergency mobile truck is on standby. We roll with high-output air supply, emergency fuel, hydraulic jacks, and diagnostic scanners.
Complete On-Site Service Breakdown
Every job is handled with commercial-grade tooling and professional accountability. Below are our most requested mobile service capabilities:
Roadside Breakdown & Emergency Repair
Fast on-location triage and roadside repair for dead engines, air line blowouts, broken drive shafts, and high-temp shutdowns on Missouri highways.
- Immediate dispatch across Dexter & US-60
- Hazard safety lighting & roadside triangle setup
- Direct shoulder repair to prevent expensive tows
Engine Diagnostics & Forced DPF Regens
Heavy-duty commercial diagnostic software for Cummins, Detroit DD13/DD15, PACCAR MX, Mack MP, and Volvo. Clear check-engine codes and unfreeze derates.
- OEM diagnostic trouble code reading & clearing
- Forced stationary DPF regenerations on-site
- DEF dosing system & NOx sensor troubleshooting
Air Brake Repair & Replacement
Comprehensive air brake system service: stuck brake chambers, blown air lines, glad hand replacements, slack adjusters, brake shoes, and air governor swaps.
- Type 30/30 spring brake chamber replacements
- Air governor & purge valve replacements
- DOT air leak rate compliance checks
Battery, Starter & Alternator Service
Heavy-duty commercial 12V/24V jump starts, battery terminal cleaning, multi-battery bank load testing, and on-site high-torque starter & alternator installations.
- Commercial heavy-duty high-amp jump starts
- Alternator output testing & roadside replacements
- Starter solenoid & ignition troubleshooting
Cooling System & Radiator Repair
Don't cook your diesel engine. We diagnose overheating, repair ruptured silicone radiator hoses, fix water pumps, replace thermostats, and replenish HD coolant.
- Roadside coolant hose replacement & clamping
- Water pump and fan clutch diagnosis
- System pressure leak detection
Fuel System Repair & Winter Priming
Gelled diesel fuel treatment during freezing winter conditions, clogged fuel filter replacements, lift pump failures, fuel line splicing, and rail priming.
- Primary & secondary fuel filter changes
- Gelled fuel de-waxing & tank thawing treatment
- Air bleeding and fuel system repressurization
Mobile Commercial Tire Services
Blown drive tires, steer tire failures, and trailer tire swaps. We arrive with the heavy jacks, impact tooling, and replacement commercial tires to get you rolling.
- Roadside commercial tire removal & mounting
- Wheel seal inspection and hub-piloted lug torque
- Emergency tire inflation and valve stem replacements
Electrical System Diagnostics & Wiring
Chasing short circuits, melted wire looms, faulty relays, alternator charging failures, and dead ECM communication lines across tractor and trailer.
- Tractor-to-trailer 7-way harness repair
- Lighting & signal fault repairs for DOT safety
- ECM sensor harness repair & pin rewiring
Suspension & Steering Repair
Broken leaf springs, failed air ride suspension bags, leveling valves, torque arms, tie rods, and steer axle components replaced roadside.
- Air ride suspension spring bag replacements
- Cab air bag shocks and height control valves
- Steering linkage and stabilizer fixes
Commercial Trailer Repair Services
Dry van, reefer, and flatbed repairs: landing gear cranking failures, door hinges, slider pins, trailer wiring, air tank leaks, and ABS sensors.
- Landing gear and crank mechanism repair
- Trailer tandem slider pin release fixes
- Air line glad hands and red/blue hose swaps
DOT Inspection Prep & Preventative Care
Avoid costly out-of-service red tags at Missouri weigh stations. We inspect and repair lights, safety equipment, air leakage, and brake stroke.
- Pre-scale inspection and violation corrections
- Fluid level and belt tension inspections
- Brake stroke measurement and adjustment
Transmission & Drivetrain Service
Driveline U-joints, carrier bearings, clutch linkage adjustments, PTO checks, and differential fluid top-offs done on location.
- Driveshaft universal joint (U-joint) replacements
- Center support carrier bearing diagnosis
- Clutch pedal free-play & linkage adjustments
Our Mobile Service Rig: A Full Shop On Wheels
We didn't just throw a couple of wrenches into the trunk of a pickup. Our mobile service truck matches the "WE COME TO YOU" promise displayed in our company logo — purpose-built for heavy commercial transport.
High-CFM gas-driven air compressors for 1-inch pneumatic drive impacts and immediate truck air system pressurization.
Full dealer-level bidirectional scan tools capable of commanding forced DPF regenerations and live cylinder cutout tests.
20-ton air-over-hydraulic bottle jacks and heavy-duty axle stands capable of lifting fully loaded Class 8 tractors.
Air brake chambers, governor valves, brass fittings, silicone hoses, HD belts, relays, glad hands, and fluids stocked on-board.
Common Service Questions
Quick answers before you call
How fast can you reach a stranded semi near Dexter, MO?
Average dispatch occurs immediately upon your call. Depending on whether you are directly in Dexter, along the US-60 corridor, or down on I-55, arrival is typically within 30 to 60 minutes.
Do you carry parts on the mobile service truck?
Yes. We stock high-failure components including brake chambers, air hoses, governor valves, fuel filters, coolant lines, common relays, and lubricants. For specialized OEM engine components, we have regional parts runners and supplier access.
Can you diagnose Check Engine lights and DPF derates on the shoulder?
Yes. We carry bidirectional commercial scanners to hook up to your 9-pin diagnostic port, pull live fault data, verify sensor voltages, and perform forced DPF regenerations right on the roadside.
Tell Us What's Wrong — We'll Get You Moving
Describe your truck make, current location, and symptoms. We'll give you a realistic ETA and upfront pricing.