There are 9 types of maintenance split between Preventive Maintenance and Corrective Maintenance. Preventive Maintenance is done before a failure occurs and consists of maintenance types like: Time Based Maintenance, Failure Finding Maintenance, Risk Based Maintenance, Condition Based Maintenance and Predictive Maintenance. Corrective maintenance is done after a failure has occurred either as Deferred Corrective Maintenance or as Emergency Maintenance. In the rest of this article, I will discuss each of these different types of maintenance in detail: Preventive Maintenance (PM) - Time Based Maintenance (TBM) - Failure Finding Maintenance (FFM) - Risk Based Maintenance (RBM) - Condition Based Maintenance (CBM) - Predictive Maintenance (PDM) Corrective Maintenance (CM) - Deffered Corrective Maintenance - Emergency Maintenance (EM) Source: Erik Hupjé is the founder of the Road to Reliability www.roadtoreliability.com https://media.licdn.com/dms/document/media/D4D1FAQHZcCna9wHeBg/feedshare-document-pdf-analyzed/0/1694685436490?e=1697068800&v=beta&t=zvL4OVxrOIKUTzEQqDnVGIplGwNLR1smtvYFInEC2Tw