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Driving a truck can be a challenging task. One of the most important things to know as a truck driver is how to use air brakes. Air brakes are the primary braking system used on heavy vehicles such as trucks and buses. In this article, we will discuss how to use air brakes on a truck.
Understanding Air Brakes
Air brakes work by using compressed air to force brake shoes or pads onto the wheels, slowing or stopping the truck. Unlike hydraulic brakes, air brakes use air pressure to operate. Trucks with air brakes have an air compressor that keeps the air supply tank full. When the brakes are applied, the air pressure is released, and the brakes are engaged.
Performing a Pre-Trip Inspection
Before driving a truck with air brakes, it’s essential to perform a pre-trip inspection. This inspection ensures that the brakes are working correctly and are safe to use. During the pre-trip inspection, check the air pressure gauge to ensure that the air pressure is at the correct level. The air pressure should be between 100 and 125 psi.
Applying the Brakes
To apply the brakes, press down on the brake pedal with your foot. The brake pedal is located on the right side of the accelerator pedal. When you press down on the brake pedal, the air pressure is released, and the brakes are engaged. It’s essential to apply the brakes gently to avoid locking up the wheels.
Releasing the Brakes
To release the brakes, lift your foot off of the brake pedal. The air pressure will build back up, and the brakes will disengage. It’s important to release the brakes slowly to avoid a sudden jolt or jerk in the truck.
Using the Parking Brake
The parking brake on a truck with air brakes is also operated by air pressure. To engage the parking brake, pull the yellow knob located on the dashboard. To release the parking brake, push the yellow knob back in.
People Also Ask:
Q: How often should I check the air pressure in my truck’s air brakes?
A: The air pressure in the air brakes should be checked daily, before driving the truck.
Q: What should I do if the air pressure in the air brakes is low?
A: If the air pressure is low, the first step is to check for leaks in the air brake system. If you can’t find any leaks, add air to the system using the air compressor.
Q: Can I drive a truck with air brakes if they are not working correctly?
A: No, it’s not safe to drive a truck with faulty air brakes. If the brakes are not working correctly, the truck should be taken out of service until they are repaired.
