What is the definition of preventative maintenance? Preventative maintenance is a system of proactive measures taken to prevent the deterioration of machinery or equipment. It is a planned and routine maintenance program that is designed to keep equipment and systems running at peak performance. Preventative maintenance helps to identify potential problems before they become major issues and can save money and time in the long run. It is important to regularly inspect and maintain equipment in order to ensure safety, reduce downtime, and increase equipment life. Preventative maintenance typically includes visual inspections, lubrication, tightening or replacing parts, replacing filters and fluids, and other periodic tasks. It also involves scheduling regular maintenance checks to identify problems and take corrective action. By taking these measures, it is possible to identify problems before they become major issues and can save money and time in the long run. For example, regularly inspecting and maintaining oil filters can increase the life of the engine and reduce the cost of repairs. Preventative maintenance is an essential part of maintaining the reliability