landrover Workshop Repair Guides

Land Rover Workshop Service and Repair Manuals

AUTOMATIC TRANSMISSION – ZF 5HP24|Sensors > < Power Flows|Page 201
Page 165
background image

AUTOMATIC TRANSMISSION – ZF 5HP24

44-2-32 DESCRIPTION AND OPERATION

Reverse Gear (R Selected)

The gear selector lever and the manual selector valve spool are in the 'R' position. Engine torque is transmitted from 
the torque converter to the intermediate shaft gear. The torque is applied to the intermediate shaft gear via the 
application of clutch 'C'.

Clutch 'F' is applied and holds the ring gears 1 and 3 stationary and subsequently the planet carrier of gearset 2 which 
is physically connected to ring gear 3.

The intermediate shaft gear drives the planet gears of gearset 1 which in turn rotate around the locked ring gear 1. 
The rotation of the planet carrier of gearset 1 is transferred to the ring gear 2 to which it is physically connected. The 
rotation of ring gear 2 is transferred to the planet gears of gearset 2. Because the planet carrier of gearset 2 is held 
by clutch 'F', the drive is passed from the planet gears to the small gear on the input shaft gear.

The rotation is transferred via the large gear on the input shaft gear to the planet gears of gearset 3, which rotate 
around the stationary ring gear 3. The rotation of the planet gears rotates the planet carrier of gearset 3 which in turn 
rotates the output shaft in the reverse direction to that of the forward gears.

M44 1943

WK

A

B

C

D

E

F

M44 1949

F

C D

AUTOMATIC TRANSMISSION – ZF 5HP24|Sensors > < Power Flows|Page 201