PT. Coca Cola is a big company that have big production facility and many production machines to do its daily production activity. The problem will be happened if there are down time because of machine faillure. So that the production activity must be stopped. And just will be continue after the machine be maintained. And because of it, the company can’t often get the target of production planning. With the our research, we know that at production line l, 2, 3 and 4 have main time Before failure (MTBF) 13,89 hours, 5,05 hours, 17,54 hours, and 12,82 hours. The optimum total cost is 75 at time interval 36,5 – 45,5 minutes and 95 qt time interval 104,5 – 123,5 minutes.

        Kata kunci: Down time, Production Machine