A de-blocking device for a hydraulic pump includes a can having a longitudinal axis and a conduit extending longitudinally along the longitudinal axis and having a first terminal aperture. The device further includes a bearing fixedly positioned in the conduit spaced from the first terminal aperture, and a plunger axially movably positioned in the conduit between the bearing and the first terminal aperture. A biasing element is positioned between the bearing and the plunger wherein the movement of the plunger toward the bearing compresses the biasing element.