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17TECHNICIANTIPTheBenefitsofaHYDRAULICINSPECTIONAAhydraulictune-upcanbethesolutionwhenanexcavatorseemstohaveslowercycletimesorlessdiggingpowerthanitusedtohaveaccordingtoJacobHurleyafieldtechnicianwiththeColumbusbranch.OvertimehydraulicsystemsmayweakenduetowearofhydrauliccomponentssuchasreliefvalvespumpsmotorsandcylindersHurleysaid.Thereisnosethourmilestonethatindicatesatune-upisnecessary.By10000hoursweseeequipmentthathasweakcom-ponents.Ifyoukeepthehydraulicoilcleanandsticktothemaintenancescheduleyoumightget10000hoursoutofitbutitdoesnthurttoperformacheckbeforethentoensurethemachineisoperatingatoptimumperformance.Ahydraulictune-uptakeslessthanhalfadayandcanbescheduledatthecustomersconvenience.Duringthetune-upthetechnicianwillCheckpilotpressuretoensurecontrolsystemsarecorrect.Checkmainpressuretoensurehydraulicpumpsareatfullstrength.Checkenginepull-downtoensureenginepowerandhydraulicsystemoutputmatch.Measureworkcycletimesagainstspec.Duringthetune-upthetechniciancandetectpotentialproblemssuchasahydraulicpumpthatsclosetofailureandchangeitoutbeforeitfailsanddamagesothermachinecomponents.HoweverreliefvalvesarethemostcommoncomponentthatmayweakenorwearcausingsystempressurelossandreliefvalvesaresimpletoreplaceHurleynoted.Thetunedexcavatorwillfeelstrongermovemorematerialandcyclefaster.Sometimestheeffectcanbedramatic.Ihadacustomerthatcomplainedoneexca-vatorwasnotasquickorasstrongastheothermachinetheywererunning.WhenIgotthetune-updonetheyhadmecomebackandworkonthemachinetheythoughtwasrunninggoodbecauseitwasntperformingaswellasthetunedexcavatorHurleysaid.Thetunedexcavatorwillfeelstrongermovemorematerialandcyclefaster.Sometimestheeffectcanbedramatic.JacobHurleycompletedColumbusEquipmentCompanysTechnicianInternshipProgramin2012.HegrewupworkingonhisfathersKomatsuequipmentandearnedanassociatedegreeindieselandagriculturalmechanicsfromtheUniversityofNorthwesternOhio.Heenjoyshuntingandfishing.ColumbusEquipmentCompanyFieldTechnicianJacobHurleyisarecentgraduateofthecompanysTechnicianInternshipProgram.