4020 – 05 – Knowing the Limitations of Preventive Maintenance

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Preventive maintenance needs a constant maintenance schedule including inspecting, tightening, and cleaning machines at different times usually based on the age of the machine.

Even though preventive maintenance is the most common approach, doesn’t mean reactive maintenance isn’t necessary. Even with PM programs, close to 60% of maintenance done in the shop is reactive maintenance. Some people believe that failure will be due to machine age, rather than looking at each machine and what they need.

The approaches in maintenance work that can lower the need for reactive maintenance include predictive maintenance (PdM), reliability-centered maintenance (RCM), and total productive maintenance (TPM).