Exploded View of Electric Rear Differential - From 14MY
| ITEM | DESCRIPTION |
|---|---|
| 1 | Circlip |
| 2 | Bearing assembly |
| 3 | Input actuator |
| 4 | Actuator balls |
| 5 | Output actuator |
| 6 | Thrust race |
| 7 | Shim |
| 8 | Thrust plate |
| 9 | Dished washer |
| 10 | Bolt (10 off) |
| 11 | Clutch basket |
| 12 | Multi-plate clutch and pressure disc |
| 13 | Differential case |
| 14 | Screw (2 off) |
| 15 | Bearing assembly |
| 16 | Oil seal |
| 17 | Oil slinger inner |
| 18 | Oil slinger outer |
| 19 | Input flange |
| 20 | Pinion nut |
| 21 | Collapsible spacer |
| 22 | Shim |
| 23 | Bearing assembly |
| 24 | Pinion shaft |
| 25 | Mounting insulator inner (2 off) |
| 26 | Mounting insulator rubber (2 off) |
| 27 | Mounting insulator outer (2 off) |
| 28 | Carrier |
| 29 | Oil seal |
| 30 | Drain plug |
| 31 | Vent |
| 32 | Breather cap |
| 33 | Shim |
| 34 | Bearing assembly |
| 35 | Drive gear |
| 36 | Shim |
| 37 | Right sun gear |
| 38 | Circlip |
| 39 | Thrust washer (4 off) |
| 40 | Planet gear (4 off) |
| 41 | Pin (2 off) |
| 42 | Shaft |
| 43 | Left sun gear |
| 44 | Shim |
| 45 | Bearing assembly |
| 46 | Shim |
| 47 | Dowel (2 off) |
| 48 | Bolt (4 off) |
| 49 | Reduction gear casing |
| 50 | Reduction gear |
| 51 | Shaft |
| 52 | Temperature sensor |
| 53 | O-ring seal |
| 54 | Differential locking motor |
| 55 | Screw (4 off) |
| 56 | Cover |
| 57 | Output actuator locking pin |
| 58 | Bolt (9 off) |
| 59 | Filler/Level plug |
| 60 | Oil seal |
The multi-plate clutch is contained in a clutch basket attached to the differential carrier with the crown wheel securing bolts. Alternate plates of the clutch pack are keyed to the clutch basket and the left sun gear. A pressure disc is installed on the outer end of the clutch pack and keyed to the clutch basket. A thrust race on the end of the clutch basket incorporates lugs which extend through the clutch basket onto the pressure disc.
The actuator assembly is mounted on bearings on the outboard end of the clutch basket, against the thrust race. The actuator assembly consists of input and output actuators separated by five ball bearings. A locking pin in the cover engages with a slot in the output actuator to prevent it turning, but allow it to move axially. The input actuator engages with the reduction gearbox and is free to rotate relative to the cover. Ball bearings locate in curved grooves in the mating faces of the input and output actuators. The bottom surface of each groove incorporates a ramp. Rotation of the input actuator forces the ball bearings up the ramps in the grooves and induces an axial movement in the output actuator. The thrust race and pressure disc transfer the axial movement from the output actuator to the clutch pack.
| ITEM | DESCRIPTION |
|---|---|
| 1 | Actuator |
| 2 | Multi-plate clutch |
| 3 | Differential |
The differential locking motor is a 12 V DC motor that adjusts the frictional loading of the multi-plate clutch, via the reduction gearbox and the actuator assembly, under the control of the RDCM. Adjusting the frictional loading of the multi-plate clutch adjusts the locking torque between the crown wheel drive gear and the sun wheel.
Four bolts attach the motor to the reduction gearbox, which is located in position on the cover with two dowels, and secured with four bolts. An O-ring seals the joint between the motor and the reduction gearbox.
The motor is driven by a 12 V DC feed direct from the RDCM. The motor also incorporates the following connections with the RDCM:
- A motor temperature sensor, to prevent excessive use from damaging the motor.
- Two Hall effect motor position sensors, to enable closed loop control of the motor.
The temperature sensor provides a differential oil temperature signal to the RDCM, to prevent excessive use from damaging the multi-plate clutch.