Prepare for the Automotive Service Technician Period 1 exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

When the directional control valve is in alignment, the pressures in the turn chambers are equal.

In hydraulics, motion comes from a pressure difference across the actuator faces. When the directional control valve is aligned (in its neutral/center position), the path to or from the actuator is such that both sides of the turn chambers experience the same pressure, or the flow is blocked so neither side develops a higher pressure than the other. With no pressure differential, there’s no turning torque, so the pressures in the turn chambers are equal. That’s why this statement is true.

In hydraulics, motion comes from a pressure difference across the actuator faces. When the directional control valve is aligned (in its neutral/center position), the path to or from the actuator is such that both sides of the turn chambers experience the same pressure, or the flow is blocked so neither side develops a higher pressure than the other. With no pressure differential, there’s no turning torque, so the pressures in the turn chambers are equal. That’s why this statement is true.