Trailers the Forgotten Ones - Quiz 4
The October 1992 "121" Law amendment eliminated the need for a protected spring brake tank.
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True
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False
What valve in a trailer system allows for the protection of the supply line to 70 psi?
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One-way check valve
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Two-way check valve
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Pressure protection valve
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Service brake relay valve
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None of the above
The Haldex full-function valve does which of the following?
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Spring brake control
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Service brake control
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Protects the supply line
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Charges the trailer tanks
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All of the above
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None of the above
If a driver is going down the road and the trailer tank(s) lose all pressure, the Haldex full-function valve will not allow a spring brake dynamite because of a one-way check valve.
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True
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False
The Haldex full-function valve is a service brake priority valve, meaning you cannot drive away without having service braking capabilities
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True
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False
The Haldex full-function valve is a great choice because _____.
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It's easier to troubleshoot
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Less hoses, less fittings, less cost
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There's only one valve to plumb.
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All of the above