Arizona Air Brakes CDL Practice Test

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Study for the Arizona Air Brakes CDL Test. Master the air brake system concepts with flashcards and multiple choice questions, each complemented by hints and explanations. Get exam ready!

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How should slack adjusters be adjusted?

They never need adjustment
Only by a qualified mechanic
Both manually and automatically
Should travel at least four inches

The correct answer is: Both manually and automatically

The correct answer is based on the functionality of slack adjusters in air brake systems. Slack adjusters are crucial components that connect the brake chambers to the brake shoes. They play a key role in maintaining the proper distance and function of the brakes. Over time, due to wear and tear, slack adjusters can become out of alignment or fail to maintain the appropriate tension necessary for effective braking. Automatic slack adjusters are designed to self-adjust within certain limits to compensate for brake wear. However, manual adjustments may still be necessary under certain circumstances to ensure optimal performance and safety. Regular checks and adjustments can help ensure that they are functioning correctly and responding appropriately when braking. This understanding aligns with the need for both manual and automatic capabilities in adjusting slack adjusters. It reflects the importance of proactive maintenance to ensure that the brake system operates efficiently and effectively.