Without maintenance there would be no operating, and without operating there would be no product. So we believe maintenance should be viewed as an investment in capacity, much like buying capital equipment.
We look past the maintenance system itself to understand how well the factory is running; to understand the efficiency and throughput. Then we look at maintenance effectiveness.
When a plant is running poorly, it is often necessary to invest in maintenance. We calculate the benefit in terms of capacity and compare that to the investment in equipment dollars needed to add similar capacity. In this way we can justify changes using the language that operations managers understand.