How to Adjust the Brakes on a Truck with Air Brakes?
2 Answers
Turn the screw in the opposite direction to tighten it, then loosen it three turns in the forward direction. Relevant details are as follows: 1. Air Brakes: Air brakes are a type of braking system. In vehicles, a series of specialized devices are used to apply a certain force from the external environment (primarily the road surface) to specific parts of the vehicle (mainly the wheels), thereby enforcing a certain degree of braking. This system is collectively referred to as the braking system. 2. Classification: Based on their function, vehicle braking systems can be divided into service brakes (air brakes), parking brakes, emergency brakes, and auxiliary brakes. Parking brakes can further be categorized into central disc brakes and spring brake chambers, with the latter commonly known as "spring brakes."
I used to drive trucks for over 10 years, and adjusting air brakes is something that requires serious attention to safety. Before operation, ensure the vehicle is parked on level ground with the engine off, and the jack is securely supporting it. Check that the air tank pressure gauge reads between 7-10 bar; if it's insufficient, wait for the air to accumulate. Locate the brake adjustment arm, usually on the inner side of the wheel, and use a small wrench to loosen the lock nut. Turn the adjustment arm counterclockwise to increase the gap (softer brakes) or clockwise to decrease it (tighter brakes), but don't adjust too aggressively to avoid wheel lock-up and overheating. After adjustment, tighten the lock nut and test the brakes several times, listening for normal air pressure sounds. Don't forget to inspect air hose connections by spraying soapy water to check for leaks—common issues like aging or cracks mean it's time to replace them. Adjust every 5,000 kilometers to prevent brake failure, extend brake pad life, and ensure worry-free, safe driving.