Aplicação da metodologia FMEA para diagnostico da manutenção corretiva prematura do sistema de embreagem veicular utilizando veículos leves

Abstract

This study aims to diagnose the cause of premature corrective maintenance clutch kit (disk, plateau, necklace and pedal pump), vehicles belonging to the fleet of the Military Governor, thereby identifying the causes of failures of these components and pointing proposals for the solution of the problem. The corrective maintenance process of the clutch kit has the basic assumption meet the specifications stipulated by the manufacturer, which advocates 90000 km for the urban traffic and 120000 km for road traffic, based on these data it was observed that the vehicles belonging to that Board of Transportation, could not reach the service life of the agreement reached clutch, the specifications of Sachs Manual. Thus, the diagnosis of the cause / effect of system components was conducted through the mode analysis and-FMEA Fault effects, which in this case was presented through a graphical tool called the Tree Analysis of Failures-FTA. A correlation matrix in order to be a tool to ratify the failure modes and their consequences after the construction of fault tree and analyzed the modes and causes of failure was assembled. Finally based on the information collected in this investigation modes and causes of failures of the components of the clutch system was evident that the lack of a perfect ergonomics of the driver and the vehicle was the cause of premature corrective maintenance clutch kit. Thus it was initiated for drivers of the Transport Board a sequence of courses in basic notions of automotive components and their operating principles in order to improve the performance of these components availability of these components and therefore reduce costs.