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Automatic Slack Adjusters

Need for 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.


Not only this process is time consuming and cumbersome but also keeps the vehicle off the road frequently, even though it is for about an hour. For example, when the truck is operated in the city roads, the clearance has to be adjusted once in 2 or 3 days and for long distance operation once in 10 or 15 days. It is seeing that until now the only available way to tackle this problem of shoe clearance is to manually adjust.


The only solution to overcome this problem is to use Automatic slack adjusters, which will maintain the pre-determined lining gap in all braking wheels by automatic adjustment of gap to compensate the lining wear due regular usage.