3 Speed Automatic

Fig. 1 Cross-Sectional Of Automatic Transaxle:

These transaxles combine a torque converter, three speed automatic transaxle, final drive gearing and differential combined into one unit. The torque converter, transaxle and differential assemblies are housed in an integral aluminum diecast housing, Fig.1. The differential oil sump is integral with the transaxle sump. Separate filling of the differential is not necessary.

The torque converter is connected to the crankshaft through a flexible driveplate. Converter cooling is accomplished by an oil-to-water type cooler, located in the radiator side tank. The torque converter cannot be disassembled.

The transaxle consists of two multiple disc clutches, an overrunning clutch, two servos, a hydraulic accumulator, two bands and two planetary gear assemblies to provide three forward and one reverse gear. The sun gear is connected to the front clutch retainer. The hydraulic system consists of an oil pump, and a single valve body which contains all of the valves except the governor valves. Output torque from the main drive gears is transferred through helical gears to the transfer shaft. An integral ring gear on the transfer shaft drives the differential ring gear.

All vehicles except turbocharged models are equipped with a lock-up torque converter. The lock-up mode is activated only in direct drive (3rd gear) and is controlled by the engine control computer. A lock-up solenoid on the valve body transfer plate is powered by the computer to activate torque converter lock-up.