Pump rod and driving link with side-load reducing configuration

A pump mounting system comprising:

• a drive housing including a mounting slot with a forward facing opening through a front of the drive housing, and a lower opening through a bottom of the drive housing, wherein a protrusion extends from the drive housing, the protrusion disposed at least partially around the lower opening;
• and
• a driving link disposed within the drive housing, the driving link comprising a drive cavity;
• a pump that reciprocates, the pump comprising:
• a pump cylinder;
• a pump rod partially disposed in the pump cylinder, the pump rod configured to reciprocate along an axis to pump fluid, and the pump rod comprising:
• a neck formed at an end of the pump rod disposed outside of the cylinder, the neck having a neck width;
• and
• a head connected to the neck, the head located above the neck, the head having a head width that is larger than the neck width of the neck;
• and
• a clamp configured to secure the pump to the drive housing, the clamp comprising:
• a first ring projecting from the pump cylinder and configured to support the pump on the drive housing;
• and
• a tightening ring disposed about the pump cylinder and configured to shift axially relative to the axis to secure and release the pump from the drive housing, wherein the tightening ring receives the protrusion with the pump secured to the drive housing to align the pump rod with the driving link.