CDL · Air brakes
What is true of slack adjusters in an air brake system?
Correct answer: They control how far the brake must travel before it creates friction at the wheel.
Answer options
- AThey keep the rear wheels at the right distance from each other
- BWhen pulled by hand, they should move more than an inch at the push rod
- CThey control how far the brake must travel before it creates friction at the wheel Correct
Why
Slack adjusters take up the play in the brake linkage so the shoes reach the drum after only a short stroke. During inspection, a slack adjuster that moves more than about one inch where the push rod attaches when pulled by hand is out of adjustment and needs attention.
About this question
Topic: Air brakes License: CDL
Part of these practice sets:
Where it applies: Asked in every state.
Practice the whole set
This question is part of How Air Brakes Work (18 questions). Take the full set and check your score.
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