LEVER MECHANISM OF A HYDRAULIC JACK

When lever 1 is turned counterclockwise about fixed axis D of the pump, fluid from tank 2 is drawn into cylinder 3 through suction valve 4. When lever 1 is turned in the opposite direction, fluid from the pump cylinder is delivered through opening ball-type discharge valve 8 into power cylinder 5, lifting plunger 6 of the jack together with the load. To lower the load, lever 1 is inclined clockwis…