Lincoln Corsair: Rear Drive Axle/Differential / Description and Operation - Rear Drive Axle and Differential - Overview
The RDU is available with 2.58 drive ratio.
Rear Drive Axle and Differential
The rear drive axle and differential unit (RDU ) is a cast aluminum
differential assembly located in the rear of the vehicle consisting of
the following components:
-
Crown wheel and pinion
-
An electrically activated and mechanically engaged
clutch pack acting on the rear drive axles, that applies or removes
torque from the RDU to the rear axles when commanded
When commanded by the AWD the RDU
Clutch synchronizes the drive shaft speed with the rear wheel speed
and allows drive torque from the PTU (Power Transfer Unit) to be fed to
the rear axles.
The RDU system consists of the following components:
-
RDU actuator motor
-
Spur and idler gear
-
Ball ramp drive plate
-
Ball ramp driven plate
-
Drive shaft coupling (Plunge style joint companion flange)
-
Drive shaft speed sensor
-
Rear differential carrier and inner or outer covers
-
Differential case assembly
-
Intermediate shaft (splined to clutch discs)
-
Multi-plate clutch pack
-
Clutch pack housing (splined to clutch plates)
-
Hypoid gears
-
Left and right output seals
System Operation
System Diagram
Item
Description
1
Drive Mode
2
PCM
3
ABS
4
Accelerator Pedal Position
5
BCM
6
Ignition Status
7
GWM
8
AWD
9
Speed / Position sensor
10
Actuator motor
11
Steering Wheel Angle
12
Vehicle Acceleration
13
Wheel Speed
14
RDU
R..
Other information:
Removal
NOTE:
Driver seat shown, passenger seat similar.
Move the front seat to the full upward and forward position.
Depower the SRS .
Refer to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
Remove the front seat cushion blower motor.
Disconnect the electrical connec..
Steering Column Overview
The steering column system consists of the following components:
Steering wheel
SCCM
Telescopic and tilt motors (power adjustable steering column)
Steering column control switches (power adjustable steering column)
The
steering column is the mechanical linkage between the steering wheel
and the steering gear. The steering wheel is mounted t..