| PT.X is a steel bridge company which are the production activities are designing and producting the bridge component. The company is engaged with a project management system. By using a system of project management, production planning of course schedules have been determined previously and there is no place for the engine to suffer damage that can lead to inaccuracy of production schedules. In addition, the company also has a production target to be met within a certain time period. If the engine was damaged so the machine can not work and cause downtime, then the production target can not be achieved. It is important to do an engine maintenance for the machine to work according to function and are always available for production. During these times, compays only does preventive maintenance in the form of a routine in which the examination is divided into 4 types of treatment, that is mechanical, electrical, pneumatic, and hydraulic treatment which is performed at intervals of four months. S o it can be said that the treatment for each type carried out only once a year. By doing this maintenance system, during 2010 the company can not meet its production target of 1.5%. This amount is not very big, but if left it is not likely to be even greater value. Once traced, the machine that has the most downtime is CNC Drilling machine Kaltenbach WBX 1015. Analysis tools used to identify damage to the machine CNC Drilling is by using the fault analysis and FMECA. By doing the analysis, critical components of the machine are known servo drives, relay, card, and diode. After identification of the damage distribution of each component, can be a form of preventive maintenance of preventi on replacement and inspection intervals for each component. After knowing the preventive maintenance schedule, of course, note also how much time is needed for maintenance, so the schedule can be included in the project planning g schedule . Obtained through the calculation of the turn of the prevention component of the servo drive setekah 556 hours of operation, the relay 490 hours of operation, the card is 1325 hours of operation, and components of the diode 1189 hours of operation. For the examination interval servo drive components 483-hour, 471-hour relay, 499- hour card, and a diode 721 hours. By doing preventive maintenance, the component reliability can be increased. To servo drive components is 45.083% increasing, the relay is 45.29% increasing, card is 9.59% increasing, and the diode 47.27% increasing. |