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Electronically controlled rear differential (Discovery 3)

 
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Electronically controlled rear differential


Item nameSpare part catalog numberDescription
1-Lid
2-O-ring seal
3-Bearing preload spacer sleeve
4-Bearing
5-Bearing cap
6-Bolt, 4 pcs.
7-Housing and electric motor assembly
8-Damper
9-Gear assembly
10-Bearing
11-Bearing cap
12-Washer
13-Deformable spacer sleeve
14-Pinion Nut
15-Clamp
16-Flange
17-External deflector
18-Internal deflector
19-Sealing
20-Bearing
21-Bearing cap
22-Breather cap
23-Breather
24-Frame
25-Data location
26-Mounting sleeve
27-Bearing
28-Bearing assembly without cage
29-Bearing cap
30-Filler plug
31-Drain plug
32-Electronically controlled differential assembly
33-Bolt, 10 pcs.
34-O-ring seal
35-Lid
36-Bolt, 12 pcs.
37-Temperature sensor

The electronically controlled rear differential operates on the same principle as the open rear differential, but also has a locking function.

An electronically controlled multi-plate clutch locks the rear differential and varies torque distribution to improve traction and vehicle stability.

The software that controls the electronics of the rear differential multi-plate clutch assembly provides the following:
  • preload, increasing the locking moment with increasing drive torque;
  • slip control, which increases the locking torque in off-road conditions and reduces it to achieve the best comfort, for example when parking.

The primary torque is transmitted to the differential from the output shaft of the transfer case, and then via the differential is supplied to the 2 rear axle shafts.



The device detects wheel slip using signals from various vehicle systems sent to the rear differential electronic control unit and locks the differential accordingly.

The device detects wheel slip using signals from various vehicle systems sent to the rear…


Item nameSpare part catalog numberDescription
1-Drive
2-Clutch pack
3-Differential

The electronically controlled rear differential locks and redistributes torque using a DC motor, which is controlled by the rear differential electronic control unit via pulse-width modulation (PWM) signals.

(The original text can be found at www.LRman.ru)


This article is available at russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian
Article review: Saveliy Ushakov


 

Previous articles
Rear Drive Axle Specification
General information about the rear differential
Open type rear differential disassembled
Operating principle of differential

Current article
Electronically controlled rear differential

Next articles
Multi-plate clutch assembly
Electronic control unit for rear differential
Rear differential electronic control unit contacts
CAN bus messages
Terrain Response™ System
Maintenance and diagnostics
Electrically controlled rear differential control diagram
Inspection and verification

 
 

Similar articles from Land Rover repair manuals:
• Rear Differential Control Module (RDCM) fault code Freelander 2 (2006-2014)
• Rear differential cover Freelander 1 (1997-2006)
• Draining and filling the rear differential housing oil Range Rover 3 (2001-2012)
• Rear Drive Axle/Differential Specifications Defender 2007+ (2007-2016)

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Discovery 3 
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Discovery 1 
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