Land Rover Discovery: Rear Drive Axle-
differential - Vehicles without- Active Driveline/
Description and Operation
COMPONENT LOCATION - VEHICLES WITHOUT ACTIVE DRIVELINE
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- Active on-demand coupling
- Rear differential
OVERVIEW
Vehicles without the active driveline system have a conventional mechanical
rear differential. The rear differential has an integrated active on-demand
coupling located on the driveshaft axis.
The rear differential operates in conjunction with the active on-demand
coupling to provide controlled torque to the rear halfshafts. Torque is supplied
to the active on-demand coupling and the rear differential from
the Power Transfer Unit (PTU).
For additional information, refer to: Four-Wheel Drive Systems (308-07B
Four-Wheel Drive Systems - Vehicles Without: Active Driveline, Description
and Operation).
The torque is controlled by the electro-hydraulic active on-demand
coupling.
The full time intelligent system continuously varies the front and rear torque
split to provide variable All Wheel Drive (AWD) torque when required.
The active on-demand coupling is mounted on the rear differential,
between the rear differential and the driveshaft. The active on-demand
coupling is a self-contained unit combining mechanical, hydraulic and
electronic functions to distribute torque between the front and rear
halfshafts with fully automatic control.
DESCRIPTION
READ NEXT:
Rear Differential Section View
Active on-demand coupling
Pinion shaft
Taper roller bearings
Pinion gear
Side gear - right halfshaft
Pinion gear
Crosspin shaft
Differential carrier
Angular
Clutch assembly
Pressure relief/air bleed valve
Casing
Driveshaft flange
Electric motor and pump assembly
Active on-demand coupling control module
Pump housing
Electrical connectors
The ac
PRINCIPLES OF OPERATION
For a detailed description of the Rear Differential, refer to the relevant
Description and Operation section in the workshop manual. REFER to: Rear
Drive Axle and Differential
SEE MORE:
CAUTION:
If the front airbags are deployed, the following components must be
replaced:
Driver airbag module
Steering wheel
Passenger airbag module
Instrument panel
Fly leads (where applicable) connecting front airbag modules to SRS
harness
All seat belt buckle pre-tensioner
All occupied sea
REMOVAL
Refer to: Rear Door Trim Panel (501-05, Removal and Installation).
Torque: 1.2 Nm
Torque: 1.2 Nm
INSTALLATION
NOTE:
An audible click is heard when the clips are fully latched.
To install, reverse the removal procedure.