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2026 Free Arkansas DMV Air Brakes Class B Test 1
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Question Number 10
10. The rods in S-cam brakes move the slack adjusters when air pressure is added to the brake chambers. This air pressure is added to the chambers when the driver
Presses the brake pedal.
Uses the emergency brake.
Uses the trailer hand valve.
✔ Correct Answer:
Presses the brake pedal.
Count Down:
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