| 摘要 |
PURPOSE: To reverse the part to feed the oil by changing the communicating constitution in a valve by the switching operation in the assembly stage. CONSTITUTION: Oil grooves B, B... which are alternately located on the outer circumferential surface of a valve spool 8b among a plurality of oil grooves arranged on the fitting circumference of a valve body 8a and the valve, spool 8b are longer than other oil grooves A, A... and are communicated with an annular groove C which is circumferentially provided on the outer circumferential surface of the valve spool 8b. The hydraulic pressure to be introduced into a pump port 80 is fed to the annular groove C through an oil guide hole 86 piercing the valve body 8a at an appropriate position in the circumferential direction, and the oil is fed to the oil grooves B,B....
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