IMPLEMENTATION OF PREVENTIVE MAINTENANCE SCHEDULING ON MAIN ASSEMBLY 1 MACHINE IN SPARE PART MANUFACTURER COMPANY

Abstract

Production activities often have problems due to malfunctioning of production machinery. To maintain the stability of production needs maintenance activity of machine. PT. NAA is a company of the manufacturing industry in the automotive section which produces two types of vehicle spare parts which are alternator assembly and rotor assembly. During the last six months in 2016, the maintenance activities in PT. NAA have not managed well. Maintenance that not managed well caused the occurrence of unplanned machine downtime. Preventive maintenance scheduling is needed to reduce downtime on the machine. The first step of doing this research is collect the required data which are machine failure data, types of maintenance, interval time of failure for each component, and maintenance cost. Based on the Pareto chart, there are three critical component machines. Analysis used in the treatment of machine by using failure distribution. The minimum cost is obtained by finding the right interval time for each component. The company was given the target of reliability to be achieved which is 70%. By implementing the preventive maintenance scheduling, reliability of machine can be increased by 21.65 % and the maintenance cost can be reduced by 14.56% or IDR 214,694,077.