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1、PartialmaintenanceinformationofTOYOTAautomatictransmission（丰田车系自动变速器部份维修资料）Thepressureistoolowonthedirectdriveclutchslip.Thefile/reversemeasuredbyRPMarethereasonforthehighstall:(3)thestallRPMintheDgearandtheRgeararealltoohigh:Thepressureistoolowlevelthanthe.3,A131Lfilelatencytest:A,pullupth
2、ehandbrake,andgearintheN.B,airconditioningandshut,fancannotrun.C,checktheidlespeedat650-750RPM,locatedintheNfile.D,onthebrakesandsecondscounter(table)zero.E,thestallsfromNtoDandpressthesecondscounter(table).F,whenthefeelingtothegearboxpausedwhilepressingthesecondscounter(table).G,read,delay
3、,fileseconds,shouldbelessthan1.2seconds.H,returnthegearbacktotheNfileandreturnthemetertozero.I,pressthemeterfromNtoRandpressthemeteratthesametime.J,pressthemeterwhileyouspeedtothechangebox.K,read,delay,fileseconds,shouldbelessthan1.5seconds.FiledelayanalysisIfthedelayistoolongorthefaultreas
4、oncanbecaused:Thepressureistoolow-beforeslippingclutchdirectdriveclutchwearonThefirstgearreversebrakebandwear.4、A131Loilpressuretest:TubepressuretestDfileidling3.8-4.3kg/cm254-61psistall9.2-10.7kg/cm2131-152psiRfileidling5.6-7.2kg/cm2,80-102psistall14.4-16.8kh/cm2,205-239psiTubepressuretest
5、analysis(1)thepressureofeachgearistoohighThedoorpullregulatingimpropersolarterm.Thesolartermdoorposition.Thepressureregulatingvalveside.(2)thepressureofeachgearistoolowThedoorpullregulatingimpropersolarterm.Thesolartermdoorside.Thepressureregulatorisbad.Thehydraulicpumpside.(3)thepressureis
6、toolowonlyintheDfileTheDfileofoilspill.Theforwardclutchwear.(4)thepressureistoolowonlyintheRfileTheRfileoilspill.Thefirstgearreversebrakebeltwear.Thedirectdriveclutchwear.5、A131Lpressureregulatoroilpressuretest:(1)followthediagramtoconnectthepressuregaugeanddrivetheroad.(2)thegearisplacedin
7、theDfile.Differentialratio3.526Speedoilpressure30KPH39118KPA(617PSI)60KPH157235KPA(2334PSI)90KPH284363KPA(4153PSI)Differentialratio3.722Speedoilpressure30KPH88167KPA(1324PSI)60KPH177255KPA(2637PSI)90KPH314392KPA(4657PSI)JudgmentanalysisIfthepressureisbad
