310T- Air System and Brakes exam with answers

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Exam (elaborations)

310T- Air System and Brakes exam with answers

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2025/2026

Institution 310T

Course 310T

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310T- Air System and Brakes exam with answers

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310T- Air System and Brakes exam |\ |\ |\ |\ |\ |\

with answers |\

1. What will cause air to leak out of the relay valve with the park
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\

brake released and the
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service brake not applied?
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a. Ruptured service brake diaphragm.
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b. Ruptured Park/Emergency brake diaphragm.
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c. Faulty secondary reservoir blow-off valve.
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d. Parking/Emergency brake chamber pushrod seal leak. -
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CORRECT ANSWERS ✔✔d. Parking/Emergency brake chamber
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pushrod seal leak. |\ |\

2. What will cause the wet tank air pressure to leak down
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overnight?
a. A faulty air governor valve.
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b. A faulty one way check valve.
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c. A faulty service brake diaphragm.
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d. A leak in the air compressor outlet line. - CORRECT ANSWERS
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✔✔b. A faulty one way check valve.
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, 3. What is indicated by excessive air reservoir build up time?
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a. A plugged air drier.
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b. Air governor set too low.
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c. A leaking service relay valve.
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d. A restricted compressor air inlet. - CORRECT ANSWERS ✔✔d. A
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restricted compressor air inlet.
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4. What will cause engine coolant to be present in the air system
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\

tanks?
a. Cracked intercooler.
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b. Leaking engine head gasket.
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c. Plugged air drier desiccant.
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d. Air compressor head gasket. - CORRECT ANSWERS ✔✔d. Air
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compressor head gasket. |\ |\

5. What will cause excessive air pressure drop during a brake
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application?
a. Brakes adjusted to tight.
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b. Excessive pushrod travel.
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c. Air governor cut out set too low.
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d. Service tank relief valve leaking. - CORRECT ANSWERS ✔✔b.
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Excessive pushrod travel. |\ |\

Document information

Uploaded on: April 14, 2026
Number of pages: 9
Written in: 2025/2026
Type: Exam (elaborations)
Contains: Questions & answers

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