Starting with the walking beam's rhythmic motion and the horsehead’s critical role, we explain how the pumpjack converts rotary motion from a motor into vertical motion that drives a sucker rod ...

Fresh rod bearings and a box-stock oil pump put me back on the road. ... The abrupt, vertical contours built into Moroso's replacement help keep the oil in the sump. See All 18 Photos ...

To add a filter the vertical passage from the pump to the oil pressure sender is drilled to 9/16-inch for increased flow and both outlets are drilled and tapped for a 3/8-inch NPT fittings.

Resizing pumps, installing rod-pump controllers (RPCs), ... SPECIAL REPORT: Rod-pump automation increases oil rates in Sumatran field. March 5, 2007. Resizing pumps, ...