Steering safety and truck availability were being compromised by hoist pump and wheel bearing failures releasing large amounts of contamination into the hydraulic system. Hydraulic circuits on this truck share a common reservoir including brakes, steering, wheel bearings and implements. A component failure in one circuit releases debris that plugs the main filters causing the OEM filter bypasses to open. Contamination is then circulated to all the other circuits and components. The steering control valve is particularly sensitive to contamination, which can lead to steering safety being compromised. Contaminated oil also causes extensive damage throughout the hydraulic and brake systems.

These results represent Mag-Shield^® performance over a period of 5 years, in a fleet of 930E trucks operating at an Alberta mine site. Mag-Shield^® were installed in the hydraulic systems of this 930 fleet. Following installation, some failures were prevented, all failures were mitigated and follow-on failures were eliminated. The result: less disruption for operations, planning and maintenance; improved availability and millions of dollars saved. Return on investment was less than one year.