Air Brake (Q Endorsement) Practice · Question
During a pre-trip inspection, manually checking the slack adjusters should reveal no more than how much free play at the pushrod?
When checking manual slack adjusters, ensure that the pushrod does not move more than 13 mm (1/2 inch) with the brakes released. Excessive travel indicates a ne
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Question: During a pre-trip inspection, manually checking the slack adjusters should reveal no more than how much free play at the pushrod?
Answer options:
- Approximately 25 mm (1 inch).
- Approximately 50 mm (2 inches). ✅ Approximately 13 mm (1/2 inch).
- Approximately 75 mm (3 inches).
Correct answer: Approximately 13 mm (1/2 inch).
Explanation: When checking manual slack adjusters, ensure that the pushrod does not move more than 13 mm (1/2 inch) with the brakes released. Excessive travel indicates a need for adjustment.
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