truck brake repair – Comprehensive Truck Brake Services

Mechanic repairing semi truck brakes with brake chambers and tools at auto shop in San Antonio TX
Our certified heavy-duty mechanics provide comprehensive semi truck brake repair, including air brake system diagnostics and component replacement, at our San Antonio facility.

Specialized air brake and hydraulic system overhauls for Class 5-8 commercial vehicles.

Expert Heavy-Duty & Commercial Truck Brake Repair in Kirby & San Antonio

Experiencing brake issues with your heavy-duty commercial truck in the San Antonio, Texas area? Don’t compromise on road safety or FMCSA compliance. At Automotive Brake & Clutch, our specialist truck mechanics provide authoritative commercial brake repair services for all makes and models, including Freightliner, International, and Peterbilt.

As the local authority in air brake systems and heavy-duty hydraulics, we ensure your vehicle’s stopping power is maximized and your DOT compliance is guaranteed. Whether you need an air brake system repair estimate or specialized service for Hydromax boosters, our experienced team in the San Antonio area delivers reliable, long-lasting solutions.

🛑 Expert Installation & Field Note

Drawing from our shop experience specializing in heavy-duty brakes since 1985, fleet vehicle brake failure and premature shoe wear are rarely caused by basic component defects alone. Severe heat fatigue from high-load hauling often compromises the entire wheel end assembly. When performing a major overhaul or master cylinder replacement, verifying exact pushrod alignment and checking drum runout are critical steps to prevent internal fluid bypass and unexpected downtime on the highway.

Comprehensive Truck Brake Services: Air Brake & Hydraulic System Expertise

Our experienced mechanics provide complete truck brake repair and maintenance for light, medium, and heavy-duty commercial fleet vehicles. We focus on getting your fleet back on the road quickly with accurate repair estimates and guaranteed workmanship.

Air Brake Repair & Diagnostics

Expert repair and advanced diagnostics for complex commercial air brake systems. We specialize in ABS troubleshooting, air dryer service, and S-cam brake overhauls to ensure total regulatory compliance.

Hydraulic Brake System Repair

Reliable maintenance for medium-duty hydraulic systems. We are San Antonio’s specialists for Hydromax and Hydroboost units, providing the precise stopping power required for delivery and utility trucks.

Commercial Truck Brake Specialist Services

  • Medium-Duty Truck Brakes: Tailored services for box trucks and delivery vehicles to maximize uptime in San Antonio and Kirby.
  • Heavy-Duty & Semi-Trailer Brakes: Expert repair and slack adjuster maintenance for semi-trucks handling severe commercial loads and long-haul demands.

Common Truck Brake Jobs & Replacements

  • Master Cylinder & Booster Replacement: Specialist installation of brake master cylinders and boosters to restore reliable pedal feel. We supply high-quality replacement master cylinders nationwide.
  • Heavy-Duty Pads, Drums & Rotors: We use high-quality commercial-grade friction materials and brake drums designed for maximum heat dissipation and long-haul durability.
  • DOT-Ready Brake Inspections: Comprehensive safety checks to identify worn components early and ensure your trucks pass their next mandatory DOT inspection without costly fleet fines.

Commercial Truck Brake FAQ

What causes internal fluid bypass in truck hydraulic master cylinders?
Internal fluid bypass occurs when hydraulic brake fluid leaks past the internal piston seals inside the cylinder bore without showing an external leak. This issue is typically caused by normal wear and tear or poor pushrod alignment during assembly setup, leading to a dropping brake pedal and lost braking pressure under load.
What are the symptoms of a failing commercial truck S-cam brake assembly?
Common signs of S-cam or drum hardware failures include uneven brake shoe wear, slow brake release, air leaks around the chamber, or severe wheel vibrations during hard deceleration. Regular automatic slack adjuster service and inspection prevent these components from freezing or over-extending.
How often should commercial fleet trucks have their air brake system inspected?
To guarantee complete DOT safety compliance and maximize uptime, air brake systems should be inspected during every regular preventive maintenance service or at minimum every 90 days. Testing the air compressor cut-in pressure and checking your air dryers prevents system contamination.

The Local Choice for Trusted Commercial Brake Service

As a locally owned and operated business in Kirby, TX, our reputation is built on the trust and safety of our San Antonio fleet partners. We provide the personalized care and transparent repair estimates you won’t find at national chains. Our expert technicians are dedicated to one goal: delivering the high-quality heavy-duty truck brake repairs you need to stay safe and compliant on Texas roads.

Minimize Downtime. Maximize Safety.

Don’t let a brake failure sideline your fleet operations. Contact Automotive Brake & Clutch today for an expert diagnostic overhaul and a professional commercial brake repair estimate. Overhauling a heavy hydraulic cylinder inside your shop? Review our trusted master cylinder installation guide to ensure proper bench bleeding setup.

Serving San Antonio, Kirby, Seguin, and the surrounding Texas communities.