Per: DONIZETE GONZAGA DE MEDEIROS (CSN MINERAÇÃO), CHRISTIAN DEINER DUTRA (CSN MINERAÇÃO), MATEUS BARBOSA DE MORAES RODRIGUES (CSN MINERAÇÃO), SILVIO SERGIO LOPES SAIAO (CSN MINERAÇÃO)
Abstract:
Faced with the need to reduce the cost of maintenance and the consumption / disposal of lubricants and filters. Actions directed at operating cost and environment. A study was carried out to verify the possibility of extending the useful life of the lubricant applied to the diesel engine of the fleet of trucks Mercedes Benz Actros 4844 - model OM501LA. To begin the study, the analyzes and results of the predictive reports of the fleet were verified, where it was confirmed that there were no changes in the samples taken with 500 hours, allowing the test / study to be applied to the application of the new periodicity of oil change and filters. Based on this information, 5 trucks / motors with variable useful lives were chosen for the test application. The service life of these engines ranged from +/- 200 to 16,000 hours. The study was carried out in two cycles of 1,000 hours, with detailed monitoring from the 500 hours of operation (normal periodicity) and the results were satisfactory allowing the increase of the useful life of the motor oil to 750 hours. This work enabled a 33% reduction in the cost of lubricant and engine oil filters, a 0.2% increase in the physical fleet availability of 96 trucks, and environmental gain with the reduction in the acquisition and disposal of contaminated oil and filters. Another gain that the study provided was the adequacy of the workshop load without the need to increase the workforce.