Air Brake System Repair

Mobile Brake Service for Trucks and Trailers

Welcome

On-Site Air Brake Repairs for Heavy-Duty Trucks, Semis, and Trailers

NoCo Diesel Services LLC provides expert mobile brake system repair for commercial trucks, semi-trailers, and heavy equipment. Based in Johnstown, Colorado, we offer 24/7 mobile air brake service throughout Northern Colorado, Southern Wyoming, and Western Nebraska.


If your truck has a brake chamber failure, leaking air lines, or brake system warning lights, we dispatch a certified diesel technician directly to your location—roadside, yard, or job site. We diagnose and repair air brake problems quickly and safely to get you back on the road without a tow or extended downtime.

Certified Air Brake System Experience

Our lead technician has over 15 years of diesel and brake repair experience, including dealership work with International Truck and factory-level training through Kenworth. We use that expertise to safely and efficiently repair brake systems on-site—avoiding the risk of improper service or overlooked safety issues.

Every repair includes a full function test to confirm proper operation before your vehicle returns to service.

Reliable Brake Repair Where You Are

Commercial vehicles depend on properly functioning air brakes for safe operation and DOT compliance. Brake issues can result in out-of-service violations, increased stopping distance, and dangerous driving conditions.

We repair and service all major brake system components on Class 6–8 trucks, trailers, and vocational equipment, including:


  • Air brake chambers (service and spring)
  • Slack adjusters and S-cams
  • Air valves and relay valves
  • Brake shoes, pads, and drums
  • Air lines, fittings, and hoses
  • Air dryers and pressure regulators
  • ABS sensors and module diagnostics
  • Brake warning light troubleshooting
  • Trailer brake system repairs
  • Emergency brake activation issues

Brake Services We Offer

  • Brake chamber replacement (Type 30, spring brake, service chamber)
  • Slack adjuster repair or replacement
  • S-cam inspection and lube
  • Brake shoe and lining replacement
  • ABS sensor testing and wiring repair
  • Valve testing and diagnostics
  • Air line and hose repair or replacement
  • Brake balance testing
  • Emergency brake function tests
  • DOT brake system compliance checks

Mobile Brake Service Available 24/7

A brake failure is more than inconvenient—it’s a major safety risk. NoCo Diesel Services offers 24-hour brake repair for roadside emergencies, DOT citations, or yard-based service needs.

We work on:

  • Semi trucks
  • Heavy-duty box trucks
  • Flatbed and dry van trailers
  • Reefer units
  • Equipment haulers
  • Construction equipment and vocational vehicles

Common Air Brake Problems We Fix

Air brake systems are complex, and failures can be caused by a variety of mechanical or air system issues. Some of the most common problems we diagnose and repair include:

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Air Leaks

In lines, fittings, valves, chambers, or couplings

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Brake Drag

Caused by faulty valves, misadjusted slacks, or damaged spring

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No Brakes or Locked Brakes

Spring chamber failures or frozen valves

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ABS Light On

Sensor, wiring, or module communication faults

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Emergency Brake Issues

Failure to hold under spring pressure or incomplete release

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Brake Imbalance

Uneven wear or system response from front to rear

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Brake Overheating

Caused by dragging shoes or seized hardware

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Slow Air Build-Up

Compressor, dryer, or air tank issues

Welcome

Fleet Brake Service and PM Inspections

We also provide brake inspections and service as part of our fleet preventive maintenance programs. Our PM brake services help fleets stay compliant, reduce emergency repairs, and ensure each unit passes inspection. Ask about our scheduled maintenance plans that include:


  • Brake adjustment checks
  • Pad and drum wear inspections
  • Air leak detection
  • ABS system scans
  • Full brake system function testing

Contact NoCo Diesel for Mobile Brake Repair

Don’t take risks with your braking system. If you suspect a problem or have received a DOT violation for your brakes, call NoCo Diesel Services LLC today. We provide professional, mobile air brake repair to get you moving again safely.