How Do You Adjust Self Adjusting Brakes on a Semi Truck?

Most semi-trucks are fitted with self-adjusting brakes. This type of brake system allows the brakes to adjust themselves automatically, reducing the amount of time spent doing maintenance.

The self-adjusting brakes also reduce the risk of major brake problems due to worn out components. However, despite the advantages that come with having self-adjusting brakes, they still need to be checked and adjusted regularly in order to ensure proper functioning.

The process of adjusting self-adjusting brakes on a semi-truck is not particularly complicated and can be done relatively easily by someone who is familiar with truck maintenance. The first step is to check the brake pedal travel.

This can be done by pushing down on the pedal and measuring how far it moves before it meets resistance. If you find that the pedal has too much travel, then you will need to adjust it.

The next step is to locate and remove the adjustment screw located on the back side of each brake shoe or pad. You will need a flathead screwdriver for this part.

Once you have removed the adjustment screw, you can then turn it clockwise until there is no more slack in the system. You may need to adjust each shoe or pad individually in order to get them all set correctly.

The next step is to check for any signs of wear or damage on any of the components. Make sure that all components are free from corrosion and that there are no signs of wear on any of them. If there are any signs of wear, then you may need to replace some parts in order to restore proper functioning.

Finally, after making sure everything is correctly adjusted and working correctly, test drive your truck and make sure that everything works properly and without any problems.

Adjusting self-adjusting brakes on a semi-truck requires some knowledge of truck maintenance but can be done relatively easily once you know how. By following these steps, you can ensure that your semi-truck’s brakes are always working properly and safely.


Adjusting self-adjusting brakes on a semi-truck is not difficult but does require some knowledge about truck maintenance. By following these steps, one can ensure that their semi-truck’s brakes are always in good condition and operating safely at all times!

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Stephen Dunn