5 Brake system maintenance and inspection

Introduction

Brake systems are one of the most important safety features of any vehicle, especially heavy vehicles. Proper maintenance and inspection of brake systems is crucial for ensuring safety on the road. In this lesson, we will cover the steps involved in inspecting and maintaining brake systems for heavy vehicles, including checking brake pads, rotors, and fluid levels. We will also cover common problems and how to troubleshoot them.

Checking Brake Pads

The brake pads are the part of the brake system that make contact with the rotor to slow down or stop the vehicle. Over time, brake pads wear down and need to be replaced. To check the brake pads, first, park the vehicle on a level surface and engage the parking brake. Then, remove the wheel and inspect the brake pads for wear. If the pads are less than 1/4 inch thick, they need to be replaced. Also, check for any signs of uneven wear, such as one pad being more worn than the other. This could indicate a problem with the caliper or rotor.

Inspecting Rotors

The rotors are the discs that the brake pads make contact with to slow down or stop the vehicle. Over time, rotors can become warped or worn down and need to be replaced. To inspect the rotors, first, remove the wheel and inspect the surface of the rotor for any signs of wear or damage. If the rotor has deep grooves or is warped, it needs to be replaced. Also, check for any signs of uneven wear, such as one side of the rotor being more worn than the other. This could indicate a problem with the caliper or brake pads.

Checking Fluid Levels

Brake fluid is what allows the brake system to function properly. It is important to check the brake fluid level regularly and top it off if necessary. To check the brake fluid level, locate the brake fluid reservoir under the hood of the vehicle. The reservoir should have a minimum and maximum level marked on it. If the fluid level is below the minimum level, top it off with the recommended brake fluid for your vehicle.

Common Problems and Troubleshooting

One common problem with brake systems is a soft or spongy brake pedal. This could indicate air in the brake lines or a problem with the master cylinder. To fix this problem, bleed the brake lines to remove any air and check the master cylinder for leaks or damage. Another common problem is a grinding noise when applying the brakes. This could indicate worn brake pads or rotors. To fix this problem, replace the worn parts. If the problem persists, it could indicate a problem with the caliper or brake lines.

Conclusion

Proper maintenance and inspection of brake systems for heavy vehicles is crucial for ensuring safety on the road. By regularly checking brake pads, rotors, and fluid levels, and troubleshooting common problems, you can help prevent accidents and keep your vehicle running smoothly. Remember to always follow the manufacturer's recommendations for maintenance and repair.

Now let's see if you've learned something...

⇦ 4 Anti-lock brake systems (abs)