RE0F10A_JF011E_RE0F06Arepairpart1变速箱维修手册

JATCO CVT andDaimlerChrysler,by Sean BoylePart 1An Overview and aLook at Power FlowaimlerChrysler has joined thecedure follows along the same linesTrailer towing.ranks of many manufactur-as the NAG (722.6)and even the newTaxi,police or delivery serviceers offering a Continuously62TE.There's no dipstick:customers(commercial service).Variable Transmission (CVT).Theare encouraged to take their vehicle toOff-road or desert operation.2007 Jeep Compass,Patriot,and Dodgea repair facility every 15,000 miles toHeavy loadingCaliber come equipped with an option-have a trained technician check theiral CVT produced by JATCO.Accordingfluid.A special tool,Miller part numberMechanical:Externalto a local Dodge dealership,they can't9336.is used to check the level.whichA quick look at the CVT revealskeep the CVT Calibers in stock.Thisdepends on fluid temperature.Since thetwo Hall Effect speed sensors (ISSdealer sold the first fifty Calibers with-fluid level can change almost 12mmand OSS),a transmission range sensorin a month and is anxiously waiting forfrom70°Fto190°F,the level must be(TRS),a water-to-oil cooler,and a mul-more.checked with the 9336 dipstick andtitude of pressure taps.The componentsThis CVT isn't new technology;cross-referenced to a chart or table.are labeled on the following picturesin fact,the unit is similar to the CVTFrom the bottom of the internal stop the(Figures 1,2 3,see next page).found in many Nissans since 2002.Influid level should be:There are pressure taps all over thisthis article,we'll focus on the mechan-transmission,but don't just plug anyical and hydraulic operation of theTemperatureHighLOwpressure gauge into these ports.Use aJATCO CVT used in DaimlerChrysler77℉38mm25mmgauge that's rated for at least 1000 psi.vehicles.In the next issue,we'll look138℉42mm29mmTypical operating pressures can eas-into the electronic and computer con-191℉46mm34mmily approach 800-900 psi to ensuretrol systems.necessary side force on the CVT beltIt all begins with the basics,andThe fluid is expected to last the life(Figure 4,see page 40).nothing gets more basic than check-of the vehicle,but maintenance sched-When montoring pressures,you'lling fluid,right?The CVT uses a spe-ule B (which pertains to most vehicles)see the secondary variator pressurescial fluid,designated CVTF+4,whichwould require the fluid to be changedpeak momentarily when rolling to ais specifically designed for the CVT.every60,000 miles.According tostop.This lowers the effective ratioAccording to DaimlerChrysler,the unitDaimlerChrysler,schedule B includesbefore the vehicle comes to a com-requires this special fluid because of thevehicles driven under any of these con-plete stop.Once the transmissions stops"higher pressure,special metal alloys,ditions:rotating,the CVT can't change ratios,and the critical need to prevent beltAt temperatures below 32Fbecause the variators need to rotate toslippage."For ID purposes,the fluid is(0C).change ratios;more on that later.green and,according to the m