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Pressure filling of an elevated liquid reservoir from a blind servicing location is successfully accomplished by a gravity drain extending from a reservoir vent overfill to the servicing location. A dust cap serves to cover the pressure fill hardware fitting and to provide a primary seal for the dra

Pressure filling of an elevated liquid reservoir from a blind servicing location is successfully accomplished by a gravity drain extending from a reservoir vent overfill to the servicing location. A dust cap serves to cover the pressure fill hardware fitting and to provide a primary seal for the drain. A second drain seal is closed by engine operating pressure and opened by application of the pressure fill hardware fitting.

대표청구항 ▼

Apparatus including a liquid reservoir having an overflow vent comprising a body having: a liquid outlet connected to said reservoir for supplying replenishing liquid thereto; a liquid drain inlet adapted for connection to the overflow vent in said reservoir to receive overflow liquid from said over

Apparatus including a liquid reservoir having an overflow vent comprising a body having: a liquid outlet connected to said reservoir for supplying replenishing liquid thereto; a liquid drain inlet adapted for connection to the overflow vent in said reservoir to receive overflow liquid from said overflow vent and a passageway from said drain inlet to an outlet opening through a first normally closed valve; a pressure fill liquid inlet means located adjacent said outlet opening and including a second normally closed valve to permit liquid to be pressure filled into said reservoir through said liquid outlet when adding liquid to said reservoir; means mounted for axial sliding movement actuated by a service connector for opening said second normally closed valve at said pressure fill inlet and for concomitantly opening said first normally closed valve for draining liquid received at said liquid drain inlet from said vent, said liquid drainage being along a path parallel to the axis of said sliding means to said outlet opening to prevent overfilling; and means including a unitary dust cap configured to seal said outlet opening against liquid leakage and to close said pressure fill liquid inlet means.