SAE J1469-2009 Air Brake Actuator Test Procedure,

__________________________________________________________________________________________________________________________________________SAETechnicalStandardsBoardRulesprovidethat:“ThisreportispublishedbySAEtoadvancethestateoftechnicalandengineeringsciences.Theuseofthisreportisentirelyvoluntary,anditsapplicabilityandsuitabilityforanyparticularuse,includinganypatentinfringementarisingtherefrom,isthesoleresponsibilityoftheuser.”SAEreviewseachtechnicalreportatleasteveryfiveyearsatwhichtimeitmaybereaffirmed,revised,orcancelled.SAEinvitesyourwrittencommentsandsuggestions.Copyright©2009SAEInternationalAllrightsreserved.Nopartofthispublicationmaybereproduced,storedinaretrievalsystemortransmitted,inanyformorbyanymeans,electronic,mechanical,photocopying,recording,orotherwise,withoutthepriorwrittenpermissionofSAE.TOPLACEADOCUMENTORDER:Tel:[phone](insideUSAandCanada)Tel:[phone](outsideUSA)Fax:[phone]Email:[e-mail]:(0.20in),andaddArctictemperatureLeakageandOperationaltestingtoallowtheSAEJ1450specificationtobesuspendedorcancelled.1.SCOPEThisSAERecommendedPracticeprovidesproceduresandmethodsfortestingservice,springappliedparking,andcombinationbrakeactuatorswithrespecttodurability,function,andenvironmentalperformance.AminimumoffivetestunitsdesignatedA,B,C,D,andEaretobeusedtoperformalltestsper1.1and1.2.1.1TestProceduresLeakrate-parkingandservicechambers(Section4)Chambervolume-parkingandservicechambers(Section5)Maximumreleaseandhold-offpressure-parkingchamber(Section6)MinimumPressureResponse—ServiceChambers(Section7)Forceoutputandstroke-parkingchamber(Section8)Forceoutputandstroke-servicechamber(Section9)Lowtemperatureleakage-parkingandservicechambers(Section10)Lowtemperaturemaximumreleaseandhold-offpressure(Section11)Lowtemperatureforceoutput-parkingchamber(Section12)Lowtemperatureoperationaltest-servicechamber(Section13)Corrosionresistance-parkingandservicechamber(Section14)Mechanicalback-offreleasemechanism(Section15)Proofpressuretest-parkingandservicechambers(Section16)Cycletest-parkingchamber(Section17)Cycletest-servicechamber(Section18)Elevatedtemperaturecycletest-parkingandservicechambers(Section19)Vibrationtest(Section20)Arctictemperatureleakage–servicechamber(Section21)Arctictemperatureoperationaltest–servicechamber(Section22)Author:Gilligan-SID:9234-GUID:45335446-155.69.4.4SAEJ1469RevisedFEB2009Page2of241.2TestSequenceChartThetestsequenceaschartedinthe“TestSequenceChart”shallbemandatory(seeFigure1).1.3PurposeThisdocumentprovidesuniformproceduresandmethodsforlaboratorytestingofbrakeactuatorsusedinairbrakesystems.FIGURE1-TESTSEQUENCECHARTNO.ABCDEABCDEABCDE4XXXXXXXXXXXXXXX5XXX6XX7XXPark8XXXXXXXXXXService9XXXXXXXXXX10XXX11XX12XX13XX14XXXMechBack-OffRelease(whenapplicable)15XXXX16XXXPark17XXXXXXService18XXXXXX19XXX20XXX21XXX22XXXTESTSFORCOMBINATIONSTESTUNITDESIGNATIONTESTSFORSERVICECHAMBERSONLYTESTUNITDESIGNATIONTESTSFORPARKINGCHAMBERONLYTESTUNITDESIGNATIONArticTempLeakageArticTempOperationalTestProcedureSectionCorrosionProofPressureElevatedTempTestVibrationForceOutoutandStrokeCycleTestLeakageRateChamberVolumeMaxRelease&Hold-OffMinPressureResponse-ServiceLowTempLeakageLowTempMaxReleaseandHold-OffLowTempForceOutputLowTemOperationalAuthor:Gilligan-SID:9234-GUID:45335446-155.69.4.4SAEJ1469RevisedFEB2009Page3of242.REFERENCES2.1ApplicablePublicationThefollowingpublicationformsapartofthisspecificationtotheextentspecifiedherein.2.1.1ASTMPublicationAvailablefromASTMInternational,100BarrHarborDrive,P.O.BoxC700,WestConshohocken,PA19428-2959,Tel:[phone],(Fog)Testing3.DEFINITIONS3.1Hold-OffPressureAdecreaseofparkingchamberairpressureforparkingbrakeapplication(extendpowerspring).3.2ReleasePressureAnincreaseofparkingchamberairpressuretoreleasetheparkingbrake(compresspowerspring).3.3ParkingChamberApplyExtendpowerspring.3.4ParkingChamberReleaseCompresspowerspring.3.5FullStrokeMaximumstrokeofaunit.3.6RatedStrokeMinimumdesignstrokeofaunit.3.7ServiceBrakeActuatorAiractivatedactuatorforapplyingthefoundationbrake.3.8ParkingBrakeActuatorMechanicallyappliedactuatorforrestrainingthevehicle.3.9CombinationBrakeActuatorCombinedserviceandparkingsectionactuator.3.10ZeroStrokeBrakeactuatorpushrodmustbeinretractedposition(foundationbrakefull-off).Author:Gilligan-SID:9234-GUID:45335446-155.69.4.4SAEJ1469RevisedFEB2009Page4of243.11FullyCagedPowerSpringPowerspringrestrainedinitsmostcompressedpositionwithinthebrakeactuator.NOTE:Thismaybeaccomplishedeitherpneumaticallyormechani