Question 7 of 20
Score: 0/0The tractor protection valve automatically closes when the air pressure falls between:
ExplanationThe tractor protection valve is designed to close when air pressure falls within the range of 20 to 45 PSI to protect the air brake system and activate emergency brakes if needed.
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Did you know? Know which line is supply and which is service, and what happens when the emergency line loses air.
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