Manual Slack Adjusters

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In  a S-cam type foundation brake, the final link between the  pneumatic  system and the foundation brake is the brake adjuster. The arm  of the  brake adjuster is fastened to the push rod of the chamber with a  clevis  and the spline end is installed on the brake camshaft.  Primarily, the  brake adjuster is a lever that converts the linear force  of the air  chamber push rod into a torque which turns the brake camshaft  and  applies the brake.Two types of brake adjusters are in use; manual  type  brake adjusters, which periodically require a manual adjustment;  and  self-adjusting brake adjusters, which automatically adjust during   normal service braking applications. All brake adjusters use the worm   and gear principle and fundamentally differ only in their torque limit   specification.