Vehicle all-wheel drive systems Land Rover Discovery 3
Specifications
Tightening torque specifications Name Nm lb-ft Transfer Case Shift Motor Torx Head Bolts 38 28 Transfer Case Clutch Solenoid Torx Head Bolts 5 4 Torx Head Bolts for Up/Down Range Sensor 7 5
Tightening torque specifications Name Nm lb-ft Transfer Case Shift Motor Torx Head Bolts 38 28 Transfer Case Clutch Solenoid Torx Head Bolts 5 4 Torx Head Bolts for Up/Down Range Sensor 7 5
The device and technical description of the transfer case
Transfer case component locations Item name Spare part catalog number Description 1 - Instrument panel 2 - Range selection switch 3 - Transfer case 4 - Central Junction Box (CJB) 5 - Output shaft...
Transfer case component locations Item name Spare part catalog number Description 1 - Instrument panel 2 - Range selection switch 3 - Transfer case 4 - Central Junction Box (CJB) 5 - Output shaft...
Transfer case — sectional view
Sectional view Item name Spare part catalog number Description 1 - Planetary kit 2 - Rear outlet flange 3 - Interaxle differential assembly 4 - Multi-plate clutch 5 - Transfer case electric motor...
Sectional view Item name Spare part catalog number Description 1 - Planetary kit 2 - Rear outlet flange 3 - Interaxle differential assembly 4 - Multi-plate clutch 5 - Transfer case electric motor...
Transfer case housings and pumps
Transfer case housings The front and rear crankcases are assembled and cast from aluminum. Front crankcase assembly The front crankcase assembly holds the primary shaft and front output flange...
Transfer case housings The front and rear crankcases are assembled and cast from aluminum. Front crankcase assembly The front crankcase assembly holds the primary shaft and front output flange...
Interaxle differential assembly
Item name Spare part catalog number Description 1 - Synchronizing ring and spring 2 - Planetary gear crown gear 3 - Differential cup 4 - Satellites 5 - Satellite axes 6 - Planetary gear satellites 7...
Item name Spare part catalog number Description 1 - Synchronizing ring and spring 2 - Planetary gear crown gear 3 - Differential cup 4 - Satellites 5 - Satellite axes 6 - Planetary gear satellites 7...
Multi-plate clutch assembly
Item name Spare part catalog number Description 1 - Clutch hub 2 - Disc springs 3 - Clutch discs 4 - Clutch piston 5 - Electric motor levers 6 - Ball locking mechanism 7 - Star The multi-plate...
Item name Spare part catalog number Description 1 - Clutch hub 2 - Disc springs 3 - Clutch discs 4 - Clutch piston 5 - Electric motor levers 6 - Ball locking mechanism 7 - Star The multi-plate...
Transfer Case Control Module
The transfer case control module controls the range shifting while driving and engages/disengages the multi-plate clutch. The control module is located in the junction box next to the engine control...
The transfer case control module controls the range shifting while driving and engages/disengages the multi-plate clutch. The control module is located in the junction box next to the engine control...
Transfer Case Control Module Input Signals
The following signals are received by the transfer case control module: Range Select Switch Signal Selected range sensor signal Transfer case drive motor temperature signal Transfer case drive motor...
The following signals are received by the transfer case control module: Range Select Switch Signal Selected range sensor signal Transfer case drive motor temperature signal Transfer case drive motor...
Transfer Case Control Module Output Signals
The transfer case control module transmits the following signals: CAN bus messages Signal for key lock solenoid Signal for the LED of the selected range Signal for transfer case electric motor Signal...
The transfer case control module transmits the following signals: CAN bus messages Signal for key lock solenoid Signal for the LED of the selected range Signal for transfer case electric motor Signal...
Maintenance and diagnostics
Service Main dimensions (in millimeters) The weight of the transfer case without oil is 40.30 kg, and with oil - 41.55 kg. It is necessary to pour 1500 ml ±2% oil into the empty box. The transfer...
Service Main dimensions (in millimeters) The weight of the transfer case without oil is 40.30 kg, and with oil - 41.55 kg. It is necessary to pour 1500 ml ±2% oil into the empty box. The transfer...
The principle of operation of the system
The transfer case range is selected using a switch located on the center console behind the main gearshift lever. The range can only be changed when the gearshift lever is in neutral (position 'N' in...
The transfer case range is selected using a switch located on the center console behind the main gearshift lever. The range can only be changed when the gearshift lever is in neutral (position 'N' in...
Diagnostics and testing
Review The DD295 transfer case is a permanent four-wheel drive unit, with a 50/50 ratio of torque distributed between the front and rear driveshafts, and it is identical for all engine variants. For...
Review The DD295 transfer case is a permanent four-wheel drive unit, with a 50/50 ratio of torque distributed between the front and rear driveshafts, and it is identical for all engine variants. For...
Low/High Range Sensor
Removal 1. CAUTION: Never work on a vehicle supported only by a jack. Always support the vehicle with special stands. Raise and support the vehicle. 2. Remove the crossmember. For more information,...
Removal 1. CAUTION: Never work on a vehicle supported only by a jack. Always support the vehicle with special stands. Raise and support the vehicle. 2. Remove the crossmember. For more information,...
Four-wheel drive (4WD) control module
Removal 1. Disconnect the ground cable from the battery. For more information, refer to Specification. 2. Remove the battery. For more information, refer to Battery (86.15.01) 3. Remove the all-wheel...
Removal 1. Disconnect the ground cable from the battery. For more information, refer to Specification. 2. Remove the battery. For more information, refer to Battery (86.15.01) 3. Remove the all-wheel...
Transfer case shift motor
Removal 1. CAUTION: Never work on a vehicle supported only by a jack. Always support the vehicle with special stands. Raise and support the vehicle. 2. Remove the transmission crossmember. For more...
Removal 1. CAUTION: Never work on a vehicle supported only by a jack. Always support the vehicle with special stands. Raise and support the vehicle. 2. Remove the transmission crossmember. For more...
Transfer case clutch solenoid
Removal 1. CAUTION: Never work on a vehicle supported only by a jack. Always support the vehicle with special stands. Raise and support the vehicle. 2. CAUTION: Before removing the solenoid, connect...
Removal 1. CAUTION: Never work on a vehicle supported only by a jack. Always support the vehicle with special stands. Raise and support the vehicle. 2. CAUTION: Before removing the solenoid, connect...
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