ASE S4 Brakes Exam: Questions & Answers:
Guaranteed A Plus
When checking the foot valve primary and secondary ports for leakage
what is the allowable pressure difference?
(Ans- It should not exceed a 5 pounds per square inch difference.
At what pressure should the stoplight switch illuminate on air brake
systems?
(Ans- 6 pounds per square inch or less.
When checking the stoplight switch what is the allowable leakage?
(Ans- There should be no leakage.
When checking the relay valve what is the allowable leakage at the
exhaust port of the valve?
(Ans- It should not exceed a 1 inch soap bubble every three seconds.
When checking the limiting quick release valve what is the allowable
leakage at the exhaust port of the valve?
(Ans- It should not exceed a 1 inch soap bubble every three seconds.

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jordancarter 6 months ago

This study guide is clear, well-organized, and covers all the essential topics. The explanations are concise, making complex concepts easier to understand. It could benefit from more practice questions, but overall, it's a great resource for efficient studying. Highly recommend!

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