Question 118 of 140

How does automatic slack adjustment technology differ from older manual slack adjusters?

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It eliminates the need to ever inspect the brakes
Automatic adjusters only exist on newer trailers, never on tractors or straight trucks at all
It continuously compensates for lining wear so the pushrod stroke stays within limits without manual adjustment
It requires manual adjustment more often than older systems

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Correct answer to question 118 (Air Brakes): It continuously compensates for lining wear so the pushrod stroke stays within limits without manual adjustment

Why

Automatic slack adjusters are designed to compensate for lining wear on their own, keeping stroke length within limits, though the brakes still need to be inspected to catch any adjuster malfunction.

Updated: November 2026

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How does automatic slack adjustment technology differ from older manual slack adjusters?

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