The Brake Slack Adjuster is the link between the air brake chamber brake camshaft. The brake slack adjuster transforms and multiplies the force developed by the brake chamber into a torque that applies the brakes by twisting the brake camshaft.
Often, brake slack adjusters are equipped with an automatic adjusting mechanism, allowing drivers to focus on driving without concern for small adjustments needed due to brake shoe lining wear. Be aware, however, that these automatic slack adjusters still need to be checked on a regular basis, perhaps even as part of a driver's pre-trip inspection.
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