What is the 'slack adjuster,' and what does it connect?
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Correct answer to question 84 (Air Brakes): A linkage that connects the brake chamber pushrod to the camshaft that applies the brake shoes
Why
The slack adjuster is the link between the pushrod extending from the brake chamber and the camshaft, and it needs periodic adjustment as brake linings wear to keep pushrod travel within limits.
Updated: November 2026
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