• Line pressure (1), distributed by the manual valve, constantly works on the right end of the valve and moves the valve to the left side by overcoming spring force.
• In 3GR, 2-4 brake band release pressure (15) works on the left side of the valve, trying to push the valve to the right side. At the same time, the 2-4 brake band release pressure (15), which is also acting on the center of the valve, passes through the valve, engaging the clutch.
• The orifice check valve controls the application timing.
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