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This paper summarizes the successful application of Computational Fluid Dynamics (CFD) analysis to optimize the pump suction line configuration of a hydraulic control system. The suction lines receive fluid from hydraulic tank and supply the fluid to different hydraulic components like fan pump, implement pump, charge pump, etc. Field report shows some of the pumps are failing before their expected operation hours. It is suspected that the shortage of fluid from the specified requirement is the probable cause of the early pump failures. This motivates to investigate the fluid flow phenomena in the suction lines. The CFD analysis is applied to study the flow distribution of the current suction line configuration. This paper provides the details of the CFD analysis steps to optimize the pump suction line configuration.