Power flow in 2nd gear, function - GF27.10-P-3012GZ

TRANSMISSION 722.9 in MODEL 164.1/8, 204.0, 216, 221, 251.0/1 up to Model Year 8 

The Ravigneaux gear set consists of the following components:

• Short planet gears
• Long planet gears
• Small internal-geared wheel
• Dual planet carrier
• Sun gear (7)
• Large internal-geared wheel

The front single planetary gear set consists of the following components:

• Planetary gears (52)
• Internal-geared wheel (12)
• Planet carrier (13)
• Sun gear (14)

The rear single planetary gear set consists of the following components:

• Planetary gears (51)
• Internal-geared wheel (9)
• Planet carrier (10)
• Sun gear (11)

Power flow in 2nd gear, function 

The following multi-disk brakes and multi-disk clutches are engaged:

• Multidisk brake B1
• Multidisk brake B2
• Multidisk clutch K3

Ravigneaux gear set 

The small ring gear is driven via the transmission input shaft. The long planetary gears roll over the stalled sun gear (7) and transmit the increased torque and reduced rotational speed to the dual planet carrier.

Single rear planetary gear system 

The ring gear (9) rotates at the same speed due to the mechanical connection to the dual planet carrier. The planetary gears (51) roll over the stalled sun gear (11) and transmit the rotary motion to the planet carrier (10).

Single front planetary gear system 

The internal-geared wheel (12) has a mechanical connection to the planet carrier (10) and rotates at the same speed. The planetary gears (52) roll on the stalled sun gear (14) and transfer the increased torque and reduced rotational speed to the transmission output shaft via the planet carrier (13). The transmission output shaft thus rotates with reduced transmission input speed in the direction of rotation of the engine.

	Torque converter component description		GF27.20-P-2010GZ
	Planetary gear set component description	Simple planetary gear system	GF27.50-P-2100GZ
		Ravigneaux gear set	GF27.50-P-2100GZZ
	Multidisk brake component description		GF27.51-P-5105GZ
	Multi-disk clutch component description		GF27.51-P-2010GZ