24/7 Emergency
Roadside Service
Truck & Trailer Mobile Repair Services
Call 720-757-4917
Breaks & Suspension
Diagnose and repair a wide range of issues related to air brakes and suspension systems on semi-trucks and trailers. Perform preventive maintenance tasks on brakes and suspension components to ensure safe operation. Conduct thorough inspections to identify potential problems before they break.
Brakes Adjustment
Inspecting Brake Systems:
Visually inspect brake components for wear, damage, or leaks.
Check brake pad thickness, rotor condition, and drum wear.
Verify the proper functioning of air brake systems, including air compressors, air tanks, and valves.
Adjusting Brakes:
Manually adjust S-cam brakes to ensure optimal braking performance.
Monitor and calibrate automatic slack adjusters (ASAs).
Ensure proper brake pedal feel and stopping distance.
Troubleshooting Brake Issues:
Diagnose and troubleshoot brake problems, such as brake fade, brake pull, or excessive brake pedal travel.
Identify and repair faulty components, including brake pads, rotors, drums, calipers, and brake chambers.
Performing Preventive Maintenance:
Regularly inspect and maintain brake components to prevent failures.
Lubricate brake components as needed.
Replace worn or damaged parts.
Adhering to Safety Regulations:
Comply with DOT regulations and industry standards for brake maintenance and repair.
Use proper safety equipment and procedures.
Air Brakes Line Replacement
Inspecting Air Brake Lines:
Visually inspect air brake lines for signs of wear, damage, corrosion, or leaks.
Check for proper routing and secure mounting.
Verify the integrity of fittings and connections.
Removing Old Air Brake Lines:
Safely disconnect the air brake lines from the compressor, valves, and brake chambers.
Remove the old lines, paying attention to any potential damage to the vehicle's components.
Installing New Air Brake Lines:
Cut and bend new air brake lines to the correct length and shape.
Connect the new lines to the compressor, valves, and brake chambers, ensuring tight and secure connections.
Route the lines properly to avoid interference with other components.
Bleeding Air Brakes:
Bleed the air brake system to remove air and restore proper brake pedal feel.
Use a brake bleeding tool or manual bleeding method to ensure complete bleeding.
Testing Air Brake System:
Test the air brake system to verify proper operation and air pressure.
Check for leaks and adjust air pressure as needed.
Brakes Repair
Diagnosing Brake Issues:
Use diagnostic tools to identify and troubleshoot brake problems, such as brake fade, brake pull, or excessive brake pedal travel.
Identify and diagnose air brake system leaks and electrical issues.
Performing Brake Repairs:
Replace worn brake pads, rotors, or drums.
Repair or replace faulty brake calipers, master cylinders, and wheel cylinders.
Bleed brake systems to remove air and restore proper brake pedal feel.
Repair or replace air brake components, including air compressors, air dryers, and air tanks.
Troubleshoot and repair electrical issues affecting the brake system.
Shock Replacement
Inspecting Shock Absorbers
Visually inspect shock absorbers for signs of leaks, damage, or excessive wear.
Check for proper mounting and secure connections.
Test shock absorber performance for damping and rebound.
Removing Old Shock Absorbers:
Safely disconnect the shock absorber from the vehicle's frame and suspension components.
Remove the old shock absorber, taking note of any specific installation requirements.
Installing New Shock Absorbers:
Position the new shock absorbers correctly and securely.
Connect the shock absorbers to the vehicle's frame and suspension components, ensuring tight connections.
Install any necessary mounting hardware and bushings.
Testing and Adjusting Vehicle:
Test the vehicle's ride quality, handling, and braking performance.
Adjust the vehicle's alignment as needed to compensate for any changes caused by the shock absorber replacement.
Brakes Chamber Replacement
Inspecting Brake Chambers:
Visually inspect brake chambers for signs of damage, leaks, or excessive wear.
Check for proper alignment and mounting.
Verify the integrity of the diaphragm and push rod.
Removing Old Brake Chambers:
Safely disconnect the air lines and electrical connectors.
Remove the old brake chamber, paying attention to any potential damage to the brake shoes or drums.
Installing New Brake Chambers:
Position the new brake chamber correctly and securely.
Connect the air lines and electrical connectors, ensuring tight connections.
Adjust the brake shoes or drums to ensure proper clearance and braking performance.
Bleeding Brakes:
Bleed the brake system to remove air and restore proper brake pedal feel.
Use a brake bleeding tool or manual bleeding method to ensure complete bleeding.
Testing and Adjusting Brakes:
Test the brakes to verify proper operation and stopping distance.
Adjust the brakes as needed to achieve optimal performance.
Airbag Replacement
Inspecting Air Suspension Components:
Visually inspect air springs, air lines, air valves, and air compressors for signs of damage, leaks, or excessive wear.
Check for proper mounting and secure connections.
Test air spring performance and pressure.
Removing Old Components:
Safely disconnect air lines, electrical connectors, and mounting bolts.
Remove old air springs, air lines, or other damaged components.
Installing New Components:
Position new air springs, air lines, and other components correctly and securely.
Connect air lines and electrical connectors, ensuring tight and secure connections.
Bleed the air suspension system to remove air and restore proper operation.
Testing and Adjusting Vehicle:
Test the vehicle's ride quality, handling, and load-carrying capacity.
Adjust air pressure in the air springs as needed to achieve optimal performance.
Calibrate the vehicle's electronic control modules (ECMs) to recognize the new components.
Electrical
Alternator
Dimming Lights: If your headlights, dashboard lights, or interior lights are dimming, it's a strong indicator of a failing alternator.
Battery Light: A lit battery warning light on your dashboard is a clear sign of an electrical issue, often related to the alternator.
Engine Stalling: A failing alternator can lead to insufficient power, causing the engine to stall, especially at idle.
Electrical System Malfunctions: Other electrical components like power windows, radio, and climate control may malfunction if the alternator is not providing enough power.
Repairing a Semi-Truck Alternator
Repairing a semi-truck alternator typically involves the following steps:
Diagnosis: A mechanic will use diagnostic tools to identify the specific issue with the alternator.
Removal: The alternator is removed from the engine compartment.
Testing: The alternator is tested to determine if it can be repaired or if it needs to be replaced.
Repair or Replacement: If the alternator can be repaired, the mechanic will replace faulty components such as diodes, bearings, or the voltage regulator. If it's beyond repair, a new alternator will be installed.
Reinstallation: The repaired or replaced alternator is reinstalled into the engine compartment.
Testing and Adjustment: The alternator is tested to ensure it's functioning correctly and adjusted to provide optimal charging voltage.
Professional Repair
Due to the complexity of semi-truck electrical systems and the importance of a properly functioning alternator, it's crucial to have the repair done by a qualified mechanic. They have the expertise and specialized tools to diagnose and repair alternator issues efficiently.
Preventive Maintenance
Regular maintenance is essential to prevent alternator failures:
Battery Maintenance: Keep the battery charged and free of corrosion.
Belt Inspection: Regularly inspect the serpentine belt that drives the alternator for wear and tear.
Professional Check-ups: Schedule regular inspections by a mechanic to identify potential issues early on.
By addressing alternator problems promptly and performing regular maintenance, you can ensure the reliable operation of your semi-truck.
Batteries
Inspecting Battery:
Visually inspect the battery for signs of damage, corrosion, or leaks.
Check the battery's voltage and specific gravity.
Test the battery's cranking amps to determine its health.
Removing Old Battery:
Safely disconnect the battery cables, starting with the negative terminal.
Remove the old battery from the battery tray.
Installing New Battery:
Place the new battery securely in the battery tray.
Connect the positive terminal first, then the negative terminal, tightening the cable clamps securely.
Clean any corrosion from the battery terminals and cables.
Testing Electrical System:
Test the vehicle's electrical system to ensure proper voltage and charging.
Check for any electrical issues related to the battery replacement.
Battery Failure: This is the most common issue, often caused by age, extreme temperatures, undercharging, overcharging, or physical damage. Symptoms include difficulty starting the engine, dimming lights, and electrical system malfunctions.
Alternator Malfunction: A faulty alternator can prevent the battery from charging properly. Symptoms include dimming lights, battery not charging, and engine stalling.
Parasitic Drain: This occurs when a device or accessory draws power even when the truck is off. Symptoms include a battery that drains quickly, even when the truck is not in use.
Corrosion on Battery Terminals: Corrosion can impede the flow of electricity, making it difficult to start the engine.
Loose or Damaged Battery Cables: Loose or damaged cables can cause intermittent electrical problems and difficulty starting the engine.
To prevent these problems, it's important to:
Regularly inspect and maintain the battery.
Ensure the alternator is functioning correctly.
Identify and fix any parasitic drains.
Clean the battery terminals regularly.
Replace worn or damaged battery cables.
Jump start
Charge batteries
Starters
Inspecting Starter Motor:
Visually inspect the starter motor for signs of damage, corrosion, or excessive wear.
Test the starter motor's performance to identify any issues.
Check the condition of the starter solenoid and wiring.
Removing Old Starter Motor:
Safely disconnect the electrical connectors and mounting bolts.
Remove the old starter motor from the engine.
Installing New Starter Motor:
Position the new starter motor correctly and securely on the engine.
Connect the electrical connectors and tighten the mounting bolts.
Ensure proper alignment and clearance.
Testing Engine Starting:
Attempt to start the engine to verify the new starter motor's functionality.
Check for any unusual noises or vibrations.
Electrical
Alternator
Dimming Lights: If your headlights, dashboard lights, or interior lights are dimming, it's a strong indicator of a failing alternator.
Battery Light: A lit battery warning light on your dashboard is a clear sign of an electrical issue, often related to the alternator.
Engine Stalling: A failing alternator can lead to insufficient power, causing the engine to stall, especially at idle.
Electrical System Malfunctions: Other electrical components like power windows, radio, and climate control may malfunction if the alternator is not providing enough power.
Repairing a Semi-Truck Alternator
Repairing a semi-truck alternator typically involves the following steps:
Diagnosis: A mechanic will use diagnostic tools to identify the specific issue with the alternator.
Removal: The alternator is removed from the engine compartment.
Testing: The alternator is tested to determine if it can be repaired or if it needs to be replaced.
Repair or Replacement: If the alternator can be repaired, the mechanic will replace faulty components such as diodes, bearings, or the voltage regulator. If it's beyond repair, a new alternator will be installed.
Reinstallation: The repaired or replaced alternator is reinstalled into the engine compartment.
Testing and Adjustment: The alternator is tested to ensure it's functioning correctly and adjusted to provide optimal charging voltage.
Professional Repair
Due to the complexity of semi-truck electrical systems and the importance of a properly functioning alternator, it's crucial to have the repair done by a qualified mechanic. They have the expertise and specialized tools to diagnose and repair alternator issues efficiently.
Preventive Maintenance
Regular maintenance is essential to prevent alternator failures:
Battery Maintenance: Keep the battery charged and free of corrosion.
Belt Inspection: Regularly inspect the serpentine belt that drives the alternator for wear and tear.
Professional Check-ups: Schedule regular inspections by a mechanic to identify potential issues early on.
By addressing alternator problems promptly and performing regular maintenance, you can ensure the reliable operation of your semi-truck.
Batteries
Inspecting Battery:
Visually inspect the battery for signs of damage, corrosion, or leaks.
Check the battery's voltage and specific gravity.
Test the battery's cranking amps to determine its health.
Removing Old Battery:
Safely disconnect the battery cables, starting with the negative terminal.
Remove the old battery from the battery tray.
Installing New Battery:
Place the new battery securely in the battery tray.
Connect the positive terminal first, then the negative terminal, tightening the cable clamps securely.
Clean any corrosion from the battery terminals and cables.
Testing Electrical System:
Test the vehicle's electrical system to ensure proper voltage and charging.
Check for any electrical issues related to the battery replacement.
Battery Failure: This is the most common issue, often caused by age, extreme temperatures, undercharging, overcharging, or physical damage. Symptoms include difficulty starting the engine, dimming lights, and electrical system malfunctions.
Alternator Malfunction: A faulty alternator can prevent the battery from charging properly. Symptoms include dimming lights, battery not charging, and engine stalling.
Parasitic Drain: This occurs when a device or accessory draws power even when the truck is off. Symptoms include a battery that drains quickly, even when the truck is not in use.
Corrosion on Battery Terminals: Corrosion can impede the flow of electricity, making it difficult to start the engine.
Loose or Damaged Battery Cables: Loose or damaged cables can cause intermittent electrical problems and difficulty starting the engine.
To prevent these problems, it's important to:
Regularly inspect and maintain the battery.
Ensure the alternator is functioning correctly.
Identify and fix any parasitic drains.
Clean the battery terminals regularly.
Replace worn or damaged battery cables.
Jump start
Charge batteries
Starters
Inspecting Starter Motor:
Visually inspect the starter motor for signs of damage, corrosion, or excessive wear.
Test the starter motor's performance to identify any issues.
Check the condition of the starter solenoid and wiring.
Removing Old Starter Motor:
Safely disconnect the electrical connectors and mounting bolts.
Remove the old starter motor from the engine.
Installing New Starter Motor:
Position the new starter motor correctly and securely on the engine.
Connect the electrical connectors and tighten the mounting bolts.
Ensure proper alignment and clearance.
Testing Engine Starting:
Attempt to start the engine to verify the new starter motor's functionality.
Check for any unusual noises or vibrations.