PT. XYZ implementing corrective maintenance regardless of the reliability factor of engine components production, resulting in engine damage often occurs suddenly causing the high opportunity cost. This problem can be solved by planning for the care and calculation engine maintenance costs. In this study, determined the critical components on a machine that is a component feeding roll Feeding Chain Roll, Roll On, Roll Back, Forward Roll and Roll Mill.. For critical components that have been determined, obtained an interval of replacement parts Chain Roll Feeding is 196 days with the reliability value of 0.3690, component Roll On is 179 days with the reliability value of 0.5012, the components of the Roll Back is 204 days with the value of the reliability of 0.3726, Roll Forward component is 243 days with a value of 0.3720 and component reliability Roll Mill is a 248-day reliability value of 0.5043. The results showed that the reduction in the cost of Rp. 1.190039 billion to Rp. 31.2286 million obtained from corrective maintenance into preventive maintenance. While the maintenance efficiency increased by the application of preventive maintenance is to Chain Roll Feeding components is 37.50%, component Roll On is 33.33%, the component is 20.00% Roll Back, Forward Roll components is 28.57% and components Roll Mill 33.33%.

Keywords : Preventive Maintenance, Reliability Engineering, MTTF, MVSM.