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1、Chonan TSTC- KM(Kyoto Model)- Alpha, Beta seriesApplication vehicle :SLC, SantamoJ-1, Y-2,3X-2,3RD (Before 2000MY) 1Chonan TSTCIdentification number is stamped as 2 rows of 6 digits each as below on the transaxle case.Identification number Product Serial No.1. Identification No. for , SeriesMODEL LI
2、NE UP Torque converter3Chonan TSTC2. Identification No. for KM SeriesMODEL LINE UP Damper spring- *1 ; Domestic or export (except NAS)- *2 ;NAS- T/Con ; Torque converterMODEL LINE UP it is composed of a kickdown band, drum, kickdown servo, switch and anchor. When the 2nd pressure is admitted to the
3、apply side chamber of kickdown servo cylinder, the kickdown piston and rod moves toward the left, tightening the brake band to hold the kickdown drum. As a result, the reverse sun gear (interlockedTo TCMKickdown servo S/WAdjust rodwith the kickdown drum) is held. This brake brake functions during 2n
4、d gear and during overdrive.The kickdown servo switch detects the position of the kickdown piston just before the brake is applied, and sends the signal to the transaxle control module. Using this signal, the transaxle control module controlsCOMPONENTS30Chonan TSTCthe 2nd pressure both before, and d
5、uring application of the brake. In the initial control stage or until just before the kickdown brake is applied, a higher 2nd pressure is supplied to the kickdown servo so that the kickdown piston con move quickly for faster response to the kickdown condition that has been initiated. In the second c
6、ontrol stage or while the brake is being applied, the 2nd pressure is regulated at an optimum level so that the band is tightened on the drum the proper amount for good kickdown “feeling”.Movement of K/D servoKickdown drumKickdown bandKickdown servo rodA4 A3 A2 A1A1 : K/D servo is fully released, th
7、at is,K/D drum rotates freely. A2 : K/D servo starts to move to engagethe K/D band. A3 : K/D drum starts to stop. A4 : K/D drum stops completely.COMPONENTS31Chonan TSTCWhen K/D drum engaged1. K/D servo moves fast from A1 to A2 point with high pressure.2. To reduce the shock, K/D servo slides from A2
8、 to A3 point withrelatively low pressure3. K/D servo moves very fast to fasten the K/D drum with high pressure.Movement of K/D servoService PointCOMPONENTS32Chonan TSTC1. Completely remove all dirt and other contaminating materials adhered aroundthe kickdown adjust screw. 2. Loosen the lock nut. 3.
9、Loosen and tighten the adjust screw twotimes by torque of 5Nm (3.6lb.ft). 4. Again loosen the adjust screw 3 to 3-1/3turns. 5. Tighten the lock nut to the specifiedtorque.Lock nut : 15-25Nm(150-250kg.cm, 11-18lb.ft)NOTE : Kickdown servo adjustmentBefore assembly, apply sealant (DC780) to center port
10、ion of the adjust screw.COMPONENTS33Chonan TSTC5. Low-Reverse brake Center supportPistonHydraulic pressureReturn springRear sideBrake plateBrake discPressure plate (selective)Brake reaction plateCOMPONENTS34Chonan TSTCLow-reverse brake is of the multiple disc type and is composed of a center support
11、, disc plates and a piston. The brake operates when the shift is in 1st gear in the “L” range or back gear. It fastens the carrier in the planetary gearing set. That is, the shafts of the long and short pinions are fastened.Inspection* Install the snap ring.* Note that align the opening end of the s
12、nap ring with the pulse generator A installing hole.COMPONENTSInstallation hole of pulse generator A (before 94MY)35Chonan TSTCService Point“N”R” shift (C1,B2) t(sec)B2 actuation point movedC1 actuation point (delayed proper endplay)B2 actuation point (delayed:wave spring+proper end play)COMPONENTS:
13、Analysis 36Chonan TSTC6. One-way Clutch (O.W.C)FreeLockSpragOuter race (Planetary gear carrier)Inner race (Center support)Forward sun gearReverse sun gearAnnulus gearShort pinionLong pinionCarrierCOMPONENTS37Chonan TSTCOne-way clutch is of the sprag type and is incorporated between the pinion carrie
14、r and the center support. In 1st gear(D or 2 range), the long pinion rotates clockwise. This reduces a force which has the tendency to cause the carrier is blocked from rotating in that direction by the one-way clutch. As a result, the long pinion transmits its force to the annulus gear. The carrier
15、, which is coupled with the one-way clutch outer race, is free to turn in clockwise direction. In an engine braking condition under which the annulus gear is turned first, the carrier turns clockwise freely and, therefore, the engine braking effect is not obtained.Service PointCOMPONENTS38Chonan TST
16、C7. Planetary GearForward sun gearReverse sun gearAnnulus gearShort pinionLong pinionCarrierParking spragOuter raceOne-way clutchLow-reverse brakes hubCOMPONENTS39Chonan TSTCThe planetary gear set incorporated in this transaxle consists of a forward sun gear, a reverse sun gear, a short pinion, a carrier to support both pinions, and an annulus gear. The reverse sun gear is connected to the front clutch retai
