Power flow in 4th gear, function - GF27.10-P-3014GZ

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 4th gear, function 

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

• Multidisk brake B2
• Multidisk clutch K1
• Multidisk clutch K2

Ravigneaux gear set 

Due to the engaged multidisk clutch K1 the components of the Ravigneaux gear set are locked together and pass on the transmission input torque and transmission input speed unchanged to the ring gear (9).

Single rear planetary gear system 

Due to the engaged multidisk clutch K2 the rotational speeds of ring gear (9) and ring gear (12) are the same. As a result the single rear planetary gear system is locked and not actively involved in the gear ratio.

Single front planetary gear system 

Due to the engaged multidisk clutch K2 the ring gear (12) is driven at transmission input 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