Gearbox Power Flows

Gearbox power flows
The following Figures show the power flow through the gearbox for each forward gear when D is selected, and for reverse. The key to the Item numbers on the Figures, and in parenthesis in the accompanying text, can be found on the 'Sectioned view of gearbox' Figure.






1st Gear (D selected)
Clutches (4) and (11) are engaged. The front planet gear carrier of gear set (9) locks against the gearbox housing through freewheel (15) when the engine powers the vehicle, and freewheels when the vehicle is coasting. Gear set (10) rotates as a solid unit with the front planet gear carrier.






2nd Gear (D selected)
Clutches (4), (6), (7) and (11) are engaged. Freewheel (15) overruns. The hollow shaft with the sun wheel of gear set (9) is locked. Gear set (10) also rotates as a solid unit.






3rd Gear (D selected)
Clutches (4), (5), (7) and (11) are engaged. Freewheels (15) and (16) are overrun. Gear sets (9) and (10) rotate as a solid unit.






4th Gear (D selected)
Clutches (4), (5), (7) and (12) are engaged. Freewheels (14), (15) and (16) are overrun. Gear set (9) rotates as a solid unit. The hollow shaft with the sun wheel of gear set (10) is locked.






Reverse gear
Clutches (5), (8) and (11) are engaged. The front planet gear carrier of gear set (9) is locked. Gear set (10) also rotates as a solid block.