PHYSICAL AVAILABILITY IMPROVEMENT STRATEGIES FOR SCANIA R620 DOUBLE TRAILERS: ENGINE LOAD OPTIMIZATION ON VARIED ROAD CONDITIONS

Abstract

Continuous improvements are carried out to support the increase in physical availability of Scania R620 double trailer equipment to support the achievement of coal hauling production volumes. Engine load time above 85% is the main problem in this research which must be resolved in order to reduce the biggest Pareto problem, namely the engine system. The analysis was carried out using the pareto problem, fishbone diagram, and regression analysis methods and supported by experimental studies on double trailer equipment so that several recommendations for improvements were obtained to reduce the Scania R620 double trailer engine load. Improvements were carried out from optimizing the payload, improving & applying appropriate driving methods, and creating an engine load monitoring system so that engine load time above 85% could be reduced by a maximum of 15%. Commitment and good cooperation from all departments & collaboration with distributor and principal to carry out improvement activities are the key to the success of improvement. The results of this improvement, the engine load was successfully reduced below 15%. This research was successful in changing the high load operational condition which was previously indicated to normal condition with several improvement activities carried out. This has an impact on increasing the physical availability of R620 equipment from the previous 78.4% to 84.2%, an increase of 5.8%.