LR3/Disco 3
When high range is engaged, the shifting sleeve (4) connects to the differential carrier via dogteeth (1). The planetary ring
gear (3), via the shifting sleeve, and the planetary pinion gears (5), via the planetary shafts, are also attached to the
differential carrier. The planetary gear set rotates as one unit and therefore turns the differential side gear with a 1:1 ratio.
In low range the motor moves the shifting sleeve (4) in the direction of the low range dogteeth (5). The low range
dogteeth, with the synchronisation cup and spring, are fixed to the rear carrier assembly (6). When the shifting sleeve is
engaged with the low range dogteeth, the planetary ring gear (3), via the shifting sleeve, is stationary and the planetary
pinion gears (2), via the planetary bolts, turn the differential side gears with 2.93: 1 ratio.
High range actuation sequence
Item Part Number
Description
A
-
High range position
B
-
Low range position
1
-
Dogteeth
2
-
Planetary pinion gears
3
-
Planetary ring gear
4
-
Shifting sleeve
5
-
Low range dogteeth
6
-
Rear carrier assembly
