| 摘要 |
<p>An apparatus for extracting and injecting liquid coolant from and into a reservoir for an engine cooling system. The apparatus includes a storage tank for the liquid coolant, and an air pressure system for selectively applying fluid pressure to the tank either above or below atmospheric pressure. A hose connects the tank to the engine cooling system reservoir through a double shut-off-type coupling. One part of the coupling is connected to the reservoir, and the other, to the end of the transfer hose, each having its own independent shut-off valve. When the coupling is connected, the valves in both components are opened; conversely, when the coupling is disconnected, the valves automatically close.</p> |
