| 摘要 |
The present invention provides a tilt device for a marine propulsion unit comprising a hydraulic cylinder device filled with a hydraulic fluid, where a piston fixed to one end portion of a piston rod is provided slidably in an inner cylinder and an outer cylinder, a tank device for storing the hydraulic fluid, and a pump device for the telescopic operation of the hydraulic cylinder device by supplying and exhausting the hydraulic fluid in the tank device into the hydraulic cylinder device, wherein a valve block of the pump device is cast-molded, the inner cylinder and the outer cylinder of the hydraulic cylinder device are made of a pipe material, a cylinder fixing portion having a diameter larger than that of the outer cylinder is formed in the valve block, and the outer cylinder is fixed to the cylinder fixing portion by the diameter enlarging processing. |
