Power flow in reverse, function - GF27.10-P-3019GH

TRANSMISSION 722.6 in MODEL 163 

Principle of power transmission in reverse gear 

Torque from the torque converter is increased via the propeller shaft (1) and all three planetary gearsets and transferred with reversed direction of rotation to the output shaft (5).

The following are not engaged:

Rear multi-disk brake (B2)

Freewheel F2

Front multi-disk clutch (K1)

Front planetary gear set 

The input shaft (1) drives the internal gear (V4). In drive mode the sun gear (V1) is supported via the locked freewheel (F1) and in overrun mode in the housing via the engaged front multi-disk brake (B1). The planet gears (V2) roll over the fixed sun gear (V1) and provide an increase in torque between the internal gear (V4) and the planet carrier (V3). The planet carrier (V3) moves at reduced speed in the direction of engine rotation.

Rear planetary gear set 

The planet carrier (H3) is held securely in the housing due to the engaged center multi-disk brake (B3). The internal gear (H4) turns at a reduced speed because of its mechanical connection to the front planet carrier (V3). The planet gears (H2) turn between the ring gear (H4) and the sun gear (H1). The direction is reversed due to the securely held planet carrier (H3) so that the sun gear (H1) rotates in the opposite direction to the engine.

Center planetary gear set 

The hollow gear (M4) is held securely in the housing by the center multi-disk brake (B3) via the mechanical connection to the planet carrier (H3). The sun gear (M1) rotates backwards due to the engaged rear multi-disk clutch (K3). The planet gears (M2) roll over the fixed internal gear (M4) and provide an increase in torque between the sun gear (M1) and the planet carrier (M3). The output shaft (5) connected to the planet carrier (M3) turns at a reduced speed in the opposite direction to the running direction of the engine.

	Torque converter, location / task / design / function		GF27.20-P-5100G
	Planetary gear set, location / task / design / function		GF27.50-P-5100G
	Multiple-disc brake, location / task / design / function		GF27.51-P-5100G
	Multi-plate clutch, location / task / design / function		GF27.51-P-5101G
	Location / task / design / function of freewheel		GF27.51-P-5102G