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Arely Herrera
on Oct 11, 2024

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What is used as the control signal for the spring brake relay valve on a trailer?

A) blue knob on dash
B) yellow knob on dash
C) red knob on dash
D) trailer hand control valve

Spring Brake Relay Valve

A spring brake relay valve is a component in air brake systems that controls the application and release of the spring brakes, typically used in heavy-duty vehicles for parking and emergency brakes.

Control Signal

An electrical or electronic signal used to control the behavior of a system or device, directing its operation or response.

Trailer

Any of a number of different types of nonpowered, load-carrying vehicles towed by another vehicle.

  • Identify the controls for the spring brake relay valve on a trailer.
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Olivia LashleyOct 14, 2024
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