Lincoln Nautilus Manuals

Lincoln Nautilus: Rear Drive Axle/Differential / Rear Drive Axle and Differential - Overview. Description and Operation

Lincoln Nautilus 2018-2023 Service Manual / Chassis / Driveline / Rear Drive Axle/Differential / Rear Drive Axle and Differential - Overview. Description and Operation

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

    Rear Drive Axle and Differential - Component Location. Description and Operation

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    Rear Drive Axle and Differential - System Operation and Component Description. Description and Operation

    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..

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    Opening and Closing the Hood

    Opening the Hood

    Lincoln Nautilus. Opening and Closing the Hood

    Inside the vehicle, pull the hood release handle located under the left-hand side of the instrument panel.

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