TIGOR AMT

TA65 Star AMT 2 2. TRANSAXLE GENERAL INFORMATION GENERAL DESCRIPTION TA65 star AMT is similar transmission as current TA65 star as regards the architecture of input shaft, lay shaft and differential final drive, bearings and oil seals. The transmission TA65* AMT provides five forward speeds and one reverse speed by means of three synchronizers and input shaft, lay shaft and reverse idler shaft and differential. All forward gears are in constant mesh engaged through synchronizers and reverse gear uses a sliding idler gear arrangement. All the synchronizers are mounted on lay shaft and engaged with gears on lay shaft. The lay shaft turns the final drive gear and differential assembly, thereby turning the front drive shafts which are attached to the front wheels. The complete Gear Shifting Mechanism is controlled by Mechatronic Gear Box & TCU (Transmission control unit). This is further transmitted through shifter dogs and shifter forks to the shifter sleeves and synchronizers. Interlock piece is provided to prevent double engagement of gears. Inhibitor is provided to block direct shift from 5th gear to Reverse gear which guides the shift lever towards 4th gear. Central detent is provided for distinct position of gears about neutral position. CHANGES AND BENEFITS OVER TA65: The major areas of change and benefits over TA65 are: 1. The internal and external gear shifting mechanism and arrangement. TA65 star AMT employees Auto Shift using AMT Kit in place of current cable shift. The advantages of Auto Shift over cable shift are:  A manual transmission requires the driver to be engaged in shifting the gears, while an automatic transmission changes gears for you.  Driver don’t have to worry about coordinating between the clutch, throttle, and gears  Driver can give more attention on Road instead of thinking about gear position. 2. Twin cone carbon lined synchronizers for first and second gears to replace single cone brass synchronizers. Benefits are improved shift smoothness, reduction in shift efforts and enhanced life of synchro cones. 3. Deletion of intermediate plate and its integration into housing front half. This has improved the housing rigidity and accuracy of gear train positioning thus helping reduction in noise level. 4. TA65 star front half housing is 10mm wider than of TA65 to accommodate increased inertia flywheel to reduce marching noise. Housings are strengthened as compared to TA65 by additional ribs. 5. Rear cover rubber seal is replaced by liquid gasket. 8 No’s of bolts are used to mount the rear cover in place of 3 bolts in TA65. 6. Mechanical Speedo (pinion and gear arrangement) is replaced by contact less Speedo (A sensor and a toothed wheel). This is to improve reliability of Speedo mechanism and to reduce complexity in assembling transaxles.