Claims
- 1. In the method of making a compact pump and motor assembly adapted for use as a fuel controller for an internal combustion engine fuel metering system wherein the assembly comprises a pumping chamber jointly defined by a pair of separate members and having axially spaced end walls perpendicular to a longitudinal axis of the assembly, one end wall being in one of said members and the other end wall being in the other of said members, and a peripheral wall, defined, when viewed axially, by a pair of intersecting circles, said peripheral wall being in said other member, and wherein the assembly further comprises a pair of meshed gears within said pumping chamber, one of which is disposed on an end of the motor armature shaft extending into the pumping chamber and has a close peripheral running fit with that portion of said peripheral wall defined by one of said circles and the other of which is journaled solely on said other member for rotation with close peripheral running fit within that portion of said peripheral wall defined by the other of said circles, said two gears having close axial running fits with said two end walls, and wherein a pilot hole is provided in said other end wall concentric with that portion of said chamber peripheral wall defined by said one circle and said motor armature shaft is provided with sufficient length so that the end thereof on which said one gear is disposed extends completely through said one gear and pilots on said pilot hole, and further wherein said two members are axially secured in assembly by a plurality of threaded fasteners, the improvement which comprises operating the motor and pump, and with the motor and pump operating, tightening the threaded fasteners until predetermined motor current draw occurs.
Parent Case Info
This is a division of application Ser. No. 822,585, filed Aug. 8, 1977, now U.S. Pat. No. 4,195,971, issued Apr. 1, 1980.
US Referenced Citations (10)
Divisions (1)
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Number |
Date |
Country |
Parent |
822585 |
Aug 1977 |
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