![]() ![]() Finding these three measurements is the key to finding the correct slack adjusters. Manual slack adjusters compensate for the distance in the brake linkage by adjustments made with a wrench.Īutomatic slack adjusters remove the slack in the brake linkage without the need for manual adjustment.īoth manual and automatic slack adjusters have three qualifications which can be easily measured. Slack adjusters are available in two types: manual slack adjusters and automatic slack adjusters. ![]() First, the type of slack adjuster should be considered. ![]() It's easy to find the correct replacement slack adjusters for your truck, tractor or trailer. When you need to replace your slack adjusters, it is very important to find the correct part that matches your equipment to ensure a safely operating braking system. Without this function, the air brake can become out of adjustment and the vehicle may lose its capability to slow or stop consistently. Fits virtually all makes and models of automatic slack adjuster rod pins. The S-cam pushes the brake shoes apart which applies friction and slows the vehicle. The cotter pin is instantly sheared off as the 3/16clevis pin is easily removed. When the brake is used, the operating rod pushes out on the slack adjuster which then turns the S-cam. This distance increases as use of the brake causes the friction material of the brake shoe to wear away. Slack adjusters (also called brake adjusters or just "slacks") regulate the distance that the air brake has to travel to apply friction to the wheel. ![]()
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