Position D and 3 - 1ST Gear

PRIMARY SHAFT (P1, P2):
The input shaft rotates clockwise and C1 connects the input shaft with the rear planetary train (P1) ring gear so that it rotates clockwise at the input shaft rpm. The inner planetary gears in P1 rotate clockwise. (The sun gear shaft rotates counterclockwise.)

F2 prevents the front planetary train ring gear from rotating counterclockwise. The outer planetary gears in P2 rotate counterclockwise and at the same time move clockwise around the inner planetary gears. The planetary gear carrier and the driving intermediate gear rotate clockwise as a unit at lower rpm than the input shaft.

SECONDARY SHAFT (P3):
Because the driving intermediate gear rotates clockwise, the driven intermediate gear and P3 ring gear is driven counterclockwise. The planetary gears rotate counterclockwise. B4 and F3 lock the sun gear so that it cannot rotate in any direction.

The planetary gears rotate counterclockwise and at the same time move counterclockwise around the sun gear. The planetary gear carrier and the driving final drive gear rotate counterclockwise as a unit. The driven final drive gear rotates clockwise at lower rpm than the driven intermediate gear.