Vehicle all-wheel drive systems Land Rover Discovery 3
Specifications
Torque Specifications Name Nm lb-ft Transfer Case Shift Motor Torx Bolts 38 28 Transfer Case Clutch Solenoid Torx Head Bolts 5 4 Torx Head Bolts for Up/Down Switch 7 5
Torque Specifications Name Nm lb-ft Transfer Case Shift Motor Torx Bolts 38 28 Transfer Case Clutch Solenoid Torx Head Bolts 5 4 Torx Head Bolts for Up/Down Switch 7 5
The device and technical description of the transfer case
Location of transfer box components Item name Spare part number Description 1 - Dashboard 2 - Range select switch 3 - Transfer case 4 - Central distribution block (CJB) 5 - Manual Transmission Output...
Location of transfer box components Item name Spare part number Description 1 - Dashboard 2 - Range select switch 3 - Transfer case 4 - Central distribution block (CJB) 5 - Manual Transmission Output...
Transfer case — sectional view
Sectional view Item name Spare part number Description 1 - planetary kit 2 - Rear outlet flange 3 - Center differential assembly 4 - Multi-plate clutch 5 - Transfer box motor block 6 - Rear crankcase...
Sectional view Item name Spare part number Description 1 - planetary kit 2 - Rear outlet flange 3 - Center differential assembly 4 - Multi-plate clutch 5 - Transfer box motor block 6 - Rear crankcase...
Transfer case crankcases and pumps
Transfer box housings The front and rear crankcase assemblies are cast aluminum. Front crankcase assembly The input shaft and front output flange bearings are installed in the front crankcase...
Transfer box housings The front and rear crankcase assemblies are cast aluminum. Front crankcase assembly The input shaft and front output flange bearings are installed in the front crankcase...
Center differential assembly
Item name Spare part number Description 1 - Timing ring and spring 2 - Planetary ring gear 3 - differential cup 4 - Satellites 5 - Satellite axes 6 - Planetary gears 7 - Axles of pinion gears 8 -...
Item name Spare part number Description 1 - Timing ring and spring 2 - Planetary ring gear 3 - differential cup 4 - Satellites 5 - Satellite axes 6 - Planetary gears 7 - Axles of pinion gears 8 -...
Multi-plate clutch assembly
Item name Spare part number Description 1 - Clutch hub 2 - Belleville springs 3 - Clutch discs 4 - Clutch piston 5 - Motor levers 6 - Ball locking mechanism 7 - Star The multi-plate clutches of the...
Item name Spare part number Description 1 - Clutch hub 2 - Belleville springs 3 - Clutch discs 4 - Clutch piston 5 - Motor levers 6 - Ball locking mechanism 7 - Star The multi-plate clutches of the...
Transfer case control module
The transfer case control module controls range shifting while driving and engages/disengages the multi-plate clutch. The control module is located in the mounting box next to the engine control unit...
The transfer case control module controls range shifting while driving and engages/disengages the multi-plate clutch. The control module is located in the mounting box next to the engine control unit...
Transfer Case Control Module Inputs
The transfer case control module receives the following signals: Range switch signal Selected range sensor signal Transfer case motor temperature signal Transfer case motor position sensor signal CAN...
The transfer case control module receives the following signals: Range switch signal Selected range sensor signal Transfer case motor temperature signal Transfer case motor position sensor signal CAN...
Transfer Case Control Module Outputs
The transfer case control module transmits the following signals: CAN bus messages Key interlock solenoid signal Signal for selected range LED Transfer case motor signal Signal for solenoid valve CAN...
The transfer case control module transmits the following signals: CAN bus messages Key interlock solenoid signal Signal for selected range LED Transfer case motor signal Signal for solenoid valve CAN...
Maintenance and diagnostics
Service Main dimensions (in millimeters) The mass of the transfer case without oil is 40.30 kg, and with oil - 41.55 kg. 1500 ml±2% of oil must be poured into an empty box. The transfer case uses...
Service Main dimensions (in millimeters) The mass of the transfer case without oil is 40.30 kg, and with oil - 41.55 kg. 1500 ml±2% of oil must be poured into an empty box. The transfer case uses...
How the system works
The range selection of the transfer case is carried out using a switch, which is located on the center console behind the main gear lever. Range can only be shifted when the shift lever is in neutral...
The range selection of the transfer case is carried out using a switch, which is located on the center console behind the main gear lever. Range can only be shifted when the shift lever is in neutral...
Diagnostics and verification
Review The DD295 transfer case is a permanent four-wheel drive unit with 50/50 front/rear driveshaft torque distribution and is identical for all engine options. See Section 308-07 for more...
Review The DD295 transfer case is a permanent four-wheel drive unit with 50/50 front/rear driveshaft torque distribution and is identical for all engine options. See Section 308-07 for more...
Low/high range sensor
Removing 1. WARNING: It is forbidden to carry out work on a vehicle standing on only one jack. Always support the vehicle with jack stands. Raise and support the vehicle. 2. Remove the cross member....
Removing 1. WARNING: It is forbidden to carry out work on a vehicle standing on only one jack. Always support the vehicle with jack stands. Raise and support the vehicle. 2. Remove the cross member....
Four Wheel Drive (4WD) Control Module
Removing 1. Disconnect the wire "masses" 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 cover of...
Removing 1. Disconnect the wire "masses" 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 cover of...
Transfer case shift motor
Removing 1. WARNING: It is forbidden to carry out work on a vehicle standing on only one jack. Always support the vehicle with jack stands. Raise and support the vehicle. 2. Remove a transverse beam...
Removing 1. WARNING: It is forbidden to carry out work on a vehicle standing on only one jack. Always support the vehicle with jack stands. Raise and support the vehicle. 2. Remove a transverse beam...
Transfer case clutch solenoid
Removing 1. WARNING: It is forbidden to carry out work on a vehicle standing on only one jack. Always support the vehicle with jack stands. Raise and support the vehicle. 2. CAUTION: Connect T4...
Removing 1. WARNING: It is forbidden to carry out work on a vehicle standing on only one jack. Always support the vehicle with jack stands. Raise and support the vehicle. 2. CAUTION: Connect T4...
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