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Preventive Maintenance Overview - Nebraska Department of Roads - Video VH-207 - The importance of preventive maintenance for heavy equipment is stressed through comparison to ordinary maintenance procedures on a personal car. This first video in Nebraska's series on equipment operation goes through pre- trip inspection and running checks of an automobile, then shows the damaging conditions in which heavy equipment operates and emphasizes the operator's responsibility for daily checks. These are briefly demonstrated on a front-end loader, noting special maintenance needs of heavy machinery.