5GR
5GR5GR:
Power transmission pathway
[Operating components: C2 clutch, C3 clutch]
1. Input shaft (rotates clockwise) [same revolutions as torque converter's turbine runner]
2. Front planetary ring gear (rotates clockwise) [same revolution as the input shaft]
3. Front planetary pinion gear (rotates clockwise on its axis, orbits clockwise) [because the front planetary sun gear is locked by the oil pump, it is pressed against the front planetary ring gear and orbits the sun gear while rotating on its axis (because the front planetary ring gear has internal gears, the rotational direction does not change)]
4. Front planetary carrier (rotates clockwise) [reduction: same revolution as the front planetary pinion gear orbit revolution]
5. C3 clutch (rotates clockwise) [connects the front planetary carrier and the rear planetary middle sun gear]
6. Rear planetary middle sun gear (rotates clockwise) [same revolution as C3 clutch (decelerates by the front planetary gear, so the revolutions are slower than the input shaft)]
7. Intermediate shaft (rotates clockwise) [same revolution as the input shaft]
8. C2 clutch (rotates clockwise) [same revolution as the intermediate shaft]
9. Rear planetary carrier (rotates clockwise) [same revolutions as intermediate shaft]
10. Rear planetary long pinion gear (rotates clockwise on its axis, orbits clockwise) [because the rear planetary carrier rotates faster than the rear planetary middle sun gear, the rear planetary middle pinion gear is pushed out by the speed difference, and orbits clockwise while rotating clockwise on its axis.]
11. Rear planetary ring gear (rotates clockwise) [because the rear planetary long pinion gear's rotation is added to the rear planetary carrier revolutions, rear planetary ring gear revolution is faster than those of the rear planetary carrier]
12. Counter drive gear (rotates clockwise) [because the rear planetary ring gear is installed on the counter drive gear, the rotational direction and revolution is the same as the rear planetary ring gear]
13. Counter gear (rotates counterclockwise)
14. Differential ring gear (rotates clockwise)
Engine brake
^ When the engine brake is operating, driving force is transmitted from the tires.