CAP CONTROL

CAP CONTROL 3719 0045 59 This cap serves as a vital barrier on a control valve body, manifold, or accumulator. Its primary function is to seal a port, keeping hydraulic oil or compressed air in while blocking external contaminants like dust and water from entering the system. You will typically find it fitted to the control blocks that manage the boom, feed, or drifter functions.

Losing or damaging this cap can have serious consequences for machine reliability. An open port allows dirt to enter the hydraulic fluid, which can quickly lead to sticking valves, premature pump wear, and erratic drilling performance. For example, a small piece of grit entering a control valve can cause it to jam, disrupting the entire drilling cycle and leading to costly downtime.

During regular machine inspections, always verify that these caps are present and securely tightened. If a cap is found to be cracked, stripped, or missing, it should be replaced immediately. This simple action is a low-cost way to prevent contamination and protect the more expensive components within the control system.