Manutenção centrada em confiabilidade (MCC): aplicação em um plano de manutenção preventiva no subsistema de uma pá carregadeira

Abstract

Reliability and operational availability in its equipment is the target of companies that want to remain competitive in a market that is increasingly more contested and with more demanding customers in terms of quality and productivity. In this work, tasks are proposed to compose a preventive maintenance plan in an air conditioning system of a wheel loader applying the Reliability Centered Maintenance (RCM) and the Analysis of Failure and Criticality Modes (FMECA). With the use of these Reliability Engineering methodologies, it is sought to increase the performance of this system and reduce maintenance costs. In this case the air conditioning is considered a security item, being of compulsory use for the operations with the Loader. In order to meet the general objective, some concepts of maintenance, methodology of fault analysis focused on RCM were revisited. The basic functioning of a vehicular air conditioning system was presented through the description of its main assemblies. Finally, the RCM implantation model was described in eight steps and later applied.