A slack adjustor probably needs adjustment if it moves more than how much when you pull on it?

A slack adjustor probably needs adjustment if it moves more than how much when you pull on it?

• A. 1/2 inch
• B. 1 inch
• C. 1 1/2 inches
• D. 2 inches

Answer: (B)

Slack adjusters should have only a small amount of free movement when the brakes are released. You test this by pulling on the slack adjuster; if it moves more than about one inch, it probably needs adjustment. The reason is that excessive play means the brakes won’t engage promptly or evenly, which can lead to longer stopping distances and uneven wear. A movement of half an inch is typically normal, while much more than an inch (like 1½ or 2 inches) indicates a misadjusted or worn linkage. So the threshold you’re checking against is around one inch.

Slack adjusters should have only a small amount of free movement when the brakes are released. You test this by pulling on the slack adjuster; if it moves more than about one inch, it probably needs adjustment. The reason is that excessive play means the brakes won’t engage promptly or evenly, which can lead to longer stopping distances and uneven wear. A movement of half an inch is typically normal, while much more than an inch (like 1½ or 2 inches) indicates a misadjusted or worn linkage. So the threshold you’re checking against is around one inch.