| 摘要 |
PURPOSE:To carry out extraction of air simply, by providing a holding device of a directional control valve holding the directional control valve in a connecting state at the time of operation of an oil supply pump. CONSTITUTION:A valve stem 5a is provided on a primary side of a directional control valve 5 in a protruded state, a collar-shaped connecting part 14 is provided on the valve stem 5a, and the connecting part 14 is connected with a holding means 15 of the directional control valve to be constituted with a connecting part 15b provided with a male screw part 15a making screw connection with a female screw part 16 of a main body 4 of a distributing valve and a threaded component 15c consisting of a applying part 15d of a wrench connecting with the connecting part by a connecting pin 15c. With this construction, when an oil supply device such as a pump is made to operate continuously under this state, extraction of air can be done simply by filling oil within a branch duct in a moment as the directinal switching valve 5 can be held in a communicating state by operating the switching valve holding device 15. |
