| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pump having a reduced weight while achieving improved wear resistance, pressure capacity and productivity. <P>SOLUTION: This cab tilting device includes a tilting cylinder device provided between a cab and a frame for tilting the cab, an oil pump for supplying pressure oil to an oil supply/discharge passage for the tilting cylinder device, and a selector valve 15 for selecting the upper side oil supply/discharge passage or the lower side oil supply/discharge passage. The oil pump has an iron body 20 formed of an iron material and an aluminum body 50 formed of an aluminum material. In the iron body 20, a cylinder chamber is formed into which a piston is slidably fitted and a bearing 23 is protruded for supporting a drive shaft 28 to drive the piston. The bearing 23 is fitted into a mounting hole 52 opened in the aluminum body 50. The selector valve 15 is installed in the aluminum body 50. <P>COPYRIGHT: (C)2010,JPO&INPIT |
