Automatic Slack Adjusters

The process of adjusting the shoe clearance manually is cumbersome and time consuming, as we will be seeing now. The brake adjustments need several steps. Jack up the wheels and keep rotating the wheel. Then press the worm shaft clock completely and rotate worm shaft until the wheel locks. After this, rotate the worm shaft in the reverse direction until the wheel starts rotating freely. Then turn the worm shaft slightly and release the lock. Repeat this process for all the wheels. As it is difficult to maintain uniform clearance on all wheels and this can result in vehicle pulling to one side while braking.