Increased Pressure/Flow Condition
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Oil from the oil pan sump is drawn into the pump inlet (1). The rotor and vanes of the pump are rotated in a clockwise direction pressurizing the oil (5). Pressurized oil exits at the pump outlet (6) and continues to the engine oil galleries. In this mode of operation, the spring (2) pressure is greater than the hydraulic force of the pressurized cavity (4) on the outer area of the slide and the slide (3) is positioned fully clockwise.