Reverse (Mechanical Powerflow)
In Reverse (R) range, torque from the engine is multiplied through the torque converter assembly (16) and the reverse carrier gear set, thereby sending power through the front differential carrier (23) to the vehicle's drive axles. The planetary gear set operates in reduction, and in a reverse direction of the input torque. The ratio for Reverse range is 1.769:1. When the range selector lever is moved into the Reverse (R) range, the park pawl disengages from the parking lock gear allowing the variable driven pulley to rotate. The manual shift detent lever shaft (404), manual shift detent lever (402) and manual valve (234) are also moved into the Reverse range position in order to channel the transmission fluid.
1. Forward Clutch and Turbine Shaft Driven
As the torque converter turbine rotates, the turbine shaft of the forward clutch (106), which is splined to the torque converter turbine, is also forced to rotate at turbine speed.
2. Reverse Clutch Applied / Reverse Carrier Held
The reverse clutch assembly (109 - 119), splined to the transmission case (25), is applied and holds the reverse carrier (108).
3. Reverse Carrier Pinions Driven
With the reverse carrier held, the reverse internal gear (313) drives the reverse carrier pinions. The reverse carrier pinions are in mesh with the reverse sun gear (308).
4. Reverse Sun Gear Driven
The reverse carrier pinions drive the reverse sun gear (308) in the direction opposite of torque converter rotation to achieve a reversal of direction.
5. Variable Drive Pulley Driving
The variable drive pulley assembly is splined to the reverse sun gear (308) and rotates in the same direction and speed as the reverse sun gear.
6. Variable Driven Pulley Driving
The variable driven pulley assembly is driven by the variable drive chain, which is in contact with the variable drive pulley.
7. Power to Front Differential Drive Pinion Gear
The variable driven pulley assembly transfers torque to the front differential drive pinion gear assembly (8), through a transfer gear that is splined to the pulley assembly.
8. Power to Front Differential Carrier
The front differential drive pinion gear assembly (8) is in mesh with the front differential carrier (23), and thus power is transferred to the front differential carrier and to the output shafts.