2 February 2026

Safety comes before engine performance in heavy commercial vehicles. The ability of a truck carrying tons of cargo to stop safely depends on a flawlessly functioning brake system. However, harsh road conditions and heavy usage can lead to system failures over time. Here are the 5 most common problems in heavy vehicle brake systems and their solutions:

1. Air Leaks (Pressure Loss) The biggest enemy of air brake systems is leakage. It is usually caused by cracked hoses, worn seals, or faulty fittings.

Solution: Listen for air hissing sounds while the vehicle is running and the brake pedal is depressed; a soapy water test is recommended. Leaking components should be replaced with Arskar’s high-durability sealing elements and repair kits.

2. Caliper Seizure Rusting of caliper pins or pistons causes the brake to stick or brake unevenly.

Solution: The caliper mechanism must be disassembled and cleaned. If corrosion is significant, a cost-effective and safe renewal can be achieved using Arskar Caliper Repair Kits instead of a complete replacement.

3. Brake Chamber Failures A torn diaphragm or broken spring inside the brake chamber directly reduces braking power.

Solution: The brake chamber should be removed, and the internal diaphragm inspected. Damaged chambers must be replaced with new ones.

4. Brake Pad and Disc Wear Worn pads cause metal-on-metal friction, damaging the discs and increasing stopping distance.

Solution: Pad thickness should be measured during periodic maintenance. Not only the pads but also the pad retaining springs and pins should be checked and replaced as a set.

5. Moisture and Oil Contamination (Air Dryer Issues) Moisture entering the system can cause valves to freeze or corrode. Oil from the compressor can clog the valves.

Solution: Timely replacement of air dryer filters is essential. If oil is present in the system, compressor piston rings should be checked.

At Arskar Automotive, we manufacture all the spare parts you need for brake and clutch systems according to international standards. Do not forget to renew your parts on time for a safe drive.