Reverse (Mechanical Powerflow): Notes

WARNING: This page is about a different variant/trim than selected.

Note: The component callouts in the text refer to the component callout numbers in disassembled views. Disassembled Views (10L60)Disassembled Views (10L80)Disassembled Views (10L90)

In Reverse (R), torque from the engine is multiplied through the torque converter and transmission gearsets to the vehicle's drive shaft and rear axle. The planetary gearset operates in reduction and also reverses the direction of input torque for a reverse gear ratio of approximately 4.866:1.

1. Power from Torque Converter

The turbine shaft with the 1-3-5-6-7-8-9 clutch assembly (554-565) is driven by the converter turbine.

2. Input Carrier Assembly Driving

The power flows through the turbine shaft to the input carrier (62) through the input carrier pinion gears which are driving the direct overdrive sun gear shaft (65).

3. Direct Overdrive Sun Gear Shaft Driven

The direct overdrive sun gear shaft (65) is driven by the input carrier (62) pinion gears.

4. 4-5-6-7-8-9-10 Reverse Clutch Assembly Applied

The 4-5-6-7-8-9-10 reverse clutch assembly is applied and holds the Output Carrier Internal Gear (74).

5. 1-2-3-4-6-7-8-10 Reverse Clutch Assembly Applied

The 1-2-3-4-6-7-8-10 reverse clutch is applied and holds the Direct Overdrive Carrier (67).

6. Direct Overdrive Sun Gear Driving

The direct overdrive sun gear which is splined to the direct overdrive sun gear shaft (65) is driving the direct overdrive carrier pinion gears.

7. Direct Overdrive Carrier Held

The direct overdrive carrier (67) is held by the 1-2-3-4-6-7-8-10 reverse clutch while the direct overdrive carrier pinion gears drive the Direct Overdrive Internal Gear (551).

8. Direct Overdrive Internal Gear Driven

The direct overdrive internal gear (551) which is splined to the output sun gear (572) is driven by the direct overdrive carrier pinion gears.

9. Output Sun Gear Driving

The output sun gear (572) is driving the output carrier (38) pinion gears.

10. Output Carrier Internal Gear Held

The output carrier internal gear (74) is splined to the output carrier internal gear transfer shell (71) which is held by the 4-5-6-7-8-9-10 reverse clutch assembly (521-535).

11. 1-2-8-9-10 Reverse Clutch Assembly Applied

The 1-2-8-9-10 reverse clutch assembly (414-420) is applied and holding the low clutch roller (421) which is splined to the reaction sun gear (58) and held stationary.

12. 1-2-3-4-5-6 Reverse Clutch Assembly Applied

The 1-2-3-4-5-6 reverse clutch assembly (30-35) is applied and holding the reaction internal gear (52) which is held stationary.

13. Output Carrier Driven

The output carrier (38) is driven by the output sun gear (572). Power is transferred to the differential assembly.