奔驰722.9自动变速箱维修手册(英文)

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1、Mercedes722.9Mercedes722.9PresentedbyDrWilliam(Bill)HenneyPhDF.I.M.IFeaturesFeatures•ElectronicallyControlledAutomaticGearbox•7Forwardand2ReverseGears•TransmissionControlModuleis:IntegratedintotheValveBodyandis“Flash”Capable•TorqueConverteroperatesinOpenandSl

2、ipModeinall7ForwardGears•GearRatiosachievedwith3Clutchesand4Brakes(NoFree-WheelingUnits)•3PlanetaryGearsets2–Simpleand1-RavigneauxAdvantagesAdvantages•Shiftcomfortanddrivingpleasureenhancedthroughimprovedcontrolofgearchanges.1.Shortercomputerreactiontimeby0.1

3、second2.Downshiftsshortenedbyupto0.2second3.Coastdownshiftsshortenedby0.4-2.5seconds•Fuelconsumptionimprovedby4%•Noiselevelreducedduetolowerenginespeedsinhighergears.•Flexibleadaptationtoengineandvehicle.TransmissionApplicationsTransmissionApplications•Curren

4、tlyonlyonesizeof722.9willbeproduced.AsmallerversionW7A700hasbeenpostponeduntilfurthernotice.•Thetransmissionisalsoreferredtoas:NAG2(NewAutomaticGearbox2)7G-Tronic•FirstinstalledinNon4matic2004year-M113enginevehicles.S430–S500–CL500–E500–SL500•722.6Transmissio

5、n(NAG1orNAGV)willcontinuetobebuiltuntil2012VariableShiftProgrammingVariableShiftProgramming•Justlikethe722.6ithastwobasicshiftprogramsusingtheS/CbuttonontheESMElectronicShifterModule.“S”(Sport)“C”(Comfort)1stGearStarts2ndGearStartsNormalShiftPointsEarlierUpsh

6、ifts/LaterDownshiftsReverseratio-3.416:1Reverseratio-2.231:1•TheTransmissionwillstartin1stgearifanyofthefollowingconditionsapply:1stgearismanuallyselected75%offullthrottleaccelerationfromstartColdEngineTemperature(Pre-Catalyticwarm-up)TransmissionFluidTransmi

7、ssionFluidItissuggestedanewfluidshouldbeusedreferredtoasATF3353.Thishasahigherthermalstabilityandfrictionconsistency.Thisfluidcanbeusedon722.3/4/5/6Itrequiresnoscheduledmaintenance.SuppliedbyShell&FuchsEuropein1Litrecontainers.MercedesPartNo.A001989450310Tran

8、smissionFluidLevelTransmissionFluidLevel•NoDipstickorDipsticktube.•Fluidlevelcheckusingoverflowmethod.•Oilpanhasoverflowpipeclippedontothepanabovedrainplug.•Fluidlevelmustbecheckedatspeci