Brake systems in heavy-duty trucks are essential for the safety of the driver, the cargo, and everyone on the road. Due to the constant demand placed on these vehicles, brakes can fail if they are not properly maintained or if low-quality parts are used.
In this article, we cover the most common issues in truck brake systems and how to fix them effectively to keep your fleet running safely and efficiently.
1. Air Brake Pressure Loss
One of the most frequent issues is pressure loss in the air brake system. This may be caused by leaks in the lines, loose fittings, or a faulty air compressor.
How to fix it:
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Inspect all airlines and connections for leaks (use soapy water to detect bubbles).
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Check the functionality of the air compressor.
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Replace worn-out valves, hoses, or fittings with high-quality OEM or trusted aftermarket parts.
2. Uneven Brake Pad or Shoe Wear
Uneven wear may be caused by misalignment, damaged drums/discs, or the use of low-quality brake components.
How to fix it:
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Perform regular inspections to detect signs of uneven wear.
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Properly align axles and check the condition of drums or discs.
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Always use brake pads, shoes, and discs from reputable brands to ensure a longer service life.
BRAKE SHOE KIT, Front Wheel 1443 Lined (Includes Springs & Rollers) 23K ***CORE EXCHANGE ***
3. Brake Overheating
This issue occurs when the brake system is overused, such as during long descents or repeated braking, which can lead to a loss of braking efficiency (fading).
How to fix it:
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Use proper driving techniques such as engine braking during long downhill drives.
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Inspect the brake ventilation or cooling systems.
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Replace worn components that may be causing excessive friction.
4. Brake Vibration
If the truck vibrates when braking, it could be due to warped discs or drums, or improper installation of brake pads.
How to fix it:
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Inspect the surface of discs and drums. If warped, they should be resurfaced or replaced.
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Make sure brake pads are installed correctly with proper hardware.
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Ensure the wheels are correctly balanced.
5. Delayed Brake Response
A delayed braking response could be caused by moisture buildup in the pneumatic system or faulty control valves.
How to fix it:
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Drain the air system regularly to remove moisture.
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Check and replace any defective valves or air filters.
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Make sure the air dryer is functioning correctly.
Drum Brake 16.50inX7; Holes 10; Drum Pilot 9.44in; Bolt Circle 11.25in Replaces # 60876-DT
Final Recommendations
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Perform regular preventive maintenance.
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Use high-quality brake parts, whether OEM or reputable aftermarket brands.
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Train drivers on proper braking techniques and daily brake inspections.
Need Brake Parts for Your Truck?
At EMTS Part & Service, Inc. we have over 15 years of experience selling and exporting OEM and aftermarket truck parts for Mack®, Volvo®, and many other brands. We carry valves, compressors, brake shoes, drums, pads, air dryers, and more—with national and international shipping from our store in Medley, FL.
📞 Call us at +1 (305) 591 8216
📧 Email us at [email protected]