Land Rover Discovery: Four-Wheel Drive Systems - Vehicles With- Active Driveline Transfer Case Draining and Filling (G1964387) General Procedures
DRAINING
WARNING:
Make sure to support the vehicle with axle stands.
CAUTION:
Make sure the vehicle is on a flat level surface.
Raise and support the vehicle.
Remove the engine undershield.
Refer to: Engine Undershield (501-02 Front End Body Panels, Removal and Installation).
CAUTION:
Make sure that the area around the component is clean and free of foreign material.
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Remove the filler plug.
WARNING:
Be prepared to collect escaping fluid.
NOTE:
Drain the fluid into a suitable container.
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Remove the drain plug.
NOTE:
Install a new sealing washer.
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- Install the drain plug.
Torque: 35 Nm
FILLING
CAUTION:
Do not overfill the transfer case.
Fill the transfer case with 400 ml of fluid Refer to: Specifications (308-07C Transfer Case - Vehicles With: M66 6-Speed Manual Transmission AWD/9HP48 9-Speed Automatic Transmission - AWD, Specifications).
NOTE:
Install a new sealing washer.
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- Install the filler plug.
Torque: 35 Nm
Install the engine undershield.
Refer to: Engine Undershield (501-02 Front End Body Panels, Removal and Installation).
Four-wheel Drive Systems - Vehicles WithFour-wheel Drive Systems - Vehicles With- Active Driveline/ Description and
Operation
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Four-wheel Drive Systems - Vehicles With- Active Driveline/ Description and
Operation
COMPONENT LOCATION - VEHICLES WITH ACTIVE DRIVELINE
NOTE:
Automatic transmission shown, manual transmission similar
Power Transfer Unit (PTU)
Driveshaft
Rear Drive Unit (RDU)
Hydraulic lines
O
Power Transfer Unit (PTU)
Breather and tube
Drive flange
Hydraulic pressure line from AWD valve block (P4)
Hydraulic pressure line from AWD valve block (P3)
Input shaft
Left cover
Casing
Engine mounting bracket
Rig
Rear Drive Unit (RDU)
Drive flange
Mounting bracket
RDU pump
All Wheel Drive (AWD) valve block oil filler plug
AWD Valve block
PTU synchroniser piston pressure line P4
PTU synchroniser piston pressure line P3 inc
SEE MORE:
Active on-demand Coupling
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 active on-demand coupling is an electronically controllable All Wheel
Drive (AWD) coupling. An active
Speed Control Switches
Vehicles with standard speed control
Vehicles with adaptive speed control
Set speed '+' switch (Engage speed control/increase speed)
Resume 'RES' (Resume previous set speed)
Set speed '-' switch (Decrease speed)
Cancel 'CAN' (Disengage speed control)
Time gap decrease switch (Vehicles wi
