汽车专业实用英语 教学课件 作者 陈晟闽 15-Diagnosing Drivelines.ppt

《汽车专业实用英语 教学课件 作者 陈晟闽 15-Diagnosing Drivelines.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、WelcomeToDrivelinesOperation&DiagnosisSECTION15ObjectivesListentothedriver’scomplaint,roadtestthevehicle,andthendeterminetheneededrepairs.Diagnoseunusualfluidusage,level,andconditionproblems.Replaceautomatictransmissionfluidandfilter.continued…ObjectivesDiagnoseelectro

2、niccontrolsystemsanddetermineneededrepairs.ConductpreliminarychecksonEATsystemsanddetermineneededrepairsorservice.Performconverterclutchsystemtestsanddetermineneededrepairsorservice.continued…ObjectivesInspect,test,andreplaceelectrical/electronicsensors.Inspect,test,by

3、pass,andreplaceactuators.Diagnosenoiseandvibrationproblems.Diagnosehydraulicandvacuumcontrolsystems.continued…ObjectivesPerformoilpressuretestsanddetermineneededrepairs.Inspectandadjustexternallinkages.Describethebasicstepsforoverhaulingatransmission.continued…Transmis

4、sionIdentificationTypicaltransmissionidentificationtaglocationscontinued…CausesofTransmissionProblemsPoorengineperformanceHydraulicsystemproblemsMechanicalmalfunctionsElectronicfailuresImproperadjustmentscontinued…FluidandFilterChangeChangethefluidandfilterwheneverther

5、eisanindicationofoxidationorcontamination.Periodicfluidandfilterchangesarealsopartofthepreventativeprogramformostvehicles.Thekilometreintervalrecommendeddependsonthetypeoftransmission.Changethefluidwiththeengineandtransmissionatnormaloperatingtemperature.continued…Flui

6、dColourDiagnosisRedorpinkIsnormalfluidcolour.DarkbrownorblackFluidhasbeenoverheated.MilkycolourFluidhasbeenmixedwithenginecoolant.Note:Colourcannotbeusedtodiagnosesyntheticfluids.continued…CommonSourcesofFluidLeaksOilpansealTransaxlerearcoverandfinaldrivecoverExtension

7、housingsealSpeedometerdrivesealElectricalswitchesCaseporositycontinued…SourcesofTransaxleFluidLeakscontinued…TransmissionCoolerInspectionChecktheenginecoolingsystem.Inspectthefluidlinesbetweenthecoolerandtransmission.Inspecttheenginecoolantforsignsoftransmissionfluid.I

8、nspectthetransmissionfluidforsignsofenginecoolant.continued…ElectronicTransmissionDiagnosisVerifythecustomer’scomplai