Designation:D6973−14(Reapproved2019)StandardTestMethodforIndicatingWearCharacteristicsofPetroleumHydraulicFluidsinaHighPressureConstantVolumeVanePump1ThisstandardisissuedunderthefixeddesignationD6973;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversaconstantvolumehigh-pressurevanepumptestprocedureforindicatingthewearcharacteristicsofpetroleumhydraulicfluids.SeeAnnexA1forrecommendedtestingconditionsforwater-basedsyntheticfluids.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2E691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod2.2ISOStandards:3ISO4021HydraulicFluidPower—ParticulateContamina-tionAnalysis—ExtractionofFluidSamplesfromLinesofanOperatingSystemISO4406HydraulicFluidPower—Fluids—MethodforCodingtheLevelofContaminationbySolidsParticlesISO7745HydraulicFluidPower—Fire-Resistant(FR)Fluids—GuidelinesforUseISO11171HydraulicFluidPower—CalibrationofAuto-maticParticleCountersforLiquidsISO11500HydraulicFluidPower—DeterminationofPar-ticulateContaminationbyAutomaticCountingUsingtheLightExtinctionPrinciple2.3OtherDocuments:SAE100R13–20HydraulicHoseSpecification4ANSI/(NFP...
