Oil Pump.

Unknown
Unknown
in Hudson 1916 - 1929
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    Here is an enlarged pic of the oil pump section
    from the '29 Hudson parts list.  The balls are numbered 261 and 271, and
    act as one-way valves.   On suction the bottom ball rises off it's
    seat and allows the  central chamber to fill with oil, whilst the top ball
    is held down on it's seat by the top spring.   On delivery stroke, the
    bottom ball is held on it's seat by the pressure, and the top ball is forced up
    off it's seat, and the oil is delivered to the top chamber and into the
    pedestal. As you can see, if the ball got in the end of the main chamber,
    it would be hit by the plunger, and this will cause either the pump to be
    broken, or the pedestal to be smashed.  Hope you can all download this
    picture.  If not email me direct.

    Geoff.
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