| 摘要 |
This power steering cylinder assembly consists of a hydraulic cylinder which is closed at each end. A piston rod travels through the center of each end has a piston assembly fastened on it. The cylinder has holes in each end for fluid to enter and move the piston or be discharged from the cylinder. The piston has holes completely through it and a flat ring valve is supported on each side and slides in the piston. These valves are urged away from the piston by spring pressure. When power steering is used these valves close by the fluid pressure to seal the piston. When the fluid pressure drops low enough so manual steering must be used the valves open and the fluid travels through the piston as it is pushed back and forth.
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