Lincoln Aviator: Front Suspension - AWD / Removal and Installation - Rear Lower Arm

Special Tool(s) / General Equipment

	204-592 Separator, Lower Arm Ball Joint TKIT-2006C-FFMFLM TKIT-2006C-LM TKIT-2006C-ROW
Vehicle/Axle Stands

Removal

NOTICE: Suspension fasteners are critical parts that affect the performance of vital components and systems. Failure of these fasteners may result in major service expense. Use the same or equivalent parts if replacement is necessary. Do not use a replacement part of lesser quality or substitute design. Tighten fasteners as specified.

1. Measure the distance from the center of the hub to the lip of the fender with the vehicle in a level, static ground position (curb height).
   

1. Remove the wheel and tire.
   Refer to: Wheel and Tire (204-04A Wheels and Tires, Removal and Installation).
   

1. NOTE: If equipped with dynamic suspension.

   1. Disconnect the ride height sensor electrical connector.
      
   2. Remove the ride height sensor arm anchor plate bolt.
      

1. NOTICE: Never allow the knuckle to hang from the upper and lower control arms or damage to the ball joints can occur.

   NOTE: Take care not to damage coating on suspension components.

   Support the wheel knuckle assembly using mechanic's wire.
   

1. 1. NOTICE: Do not use power tools to remove or install the lower arm outboard nut. Damage to the ball joint or ball joint seal may occur.

      NOTE: Use the TORX PLUS® holding feature to prevent the ball stud from turning while removing or installing the lower arm outboard nut. Torx® and TORX PLUS® is a reg. tm of Acument Intellectual Properties, LLC.

      Remove and discard the rear lower arm outboard nut.
      
   2. Remove and discard the lower arm bracket bolt and nut.
      

1. NOTICE: Do not use a hammer, prying device, or separator fork to separate the lower arm from the ball joint. Damage to the ball joint or ball joint seal may occur.

   NOTICE: Use care when releasing the lower arm and wheel knuckle into the resting position. Damage to the ball joint or ball joint seal may occur.

   Separate the rear lower arm from the wheel Knuckle.
   Use Special Service Tool: 204-592  Separator, Lower Arm Ball Joint.

1. Remove and discard the rear lower arm-to-frame retainers and remove the rear lower arm.
   

Installation

NOTICE: Tighten the suspension fasteners with the weight of the vehicle on the wheels and tires or use a suitable jack to raise the suspension to curb height or damage to the bushings may occur.

1. NOTE: Only tighten the nuts and bolts finger tight at this stage.

   Position the rear lower arm and install the new rear lower arm-to-frame retainers.
   

1. 1. NOTICE: Do not use power tools to remove or install the lower arm outboard nut. Damage to the ball joint or ball joint seal may occur.

      NOTE: Use the TORX PLUS® holding feature to prevent the ball stud from turning while removing or installing the lower arm outboard nut. Torx® and TORX PLUS® is a reg. tm of Acument Intellectual Properties, LLC.

      Attach the rear lower arm to the wheel knuckle and install the new nut.
      Torque: 136 lb.ft (185 Nm)

   2. NOTE: Only tighten the nuts and bolts finger tight at this stage.

      Install the new lower arm bracket bolt and nut.
      

1. Use a suitable jack to raise the suspension until the distance between the center of the hub and the lip of the fender is equal to the measurement taken during removal (curb height).
   Use the General Equipment: Vehicle/Axle Stands

1. NOTICE: Tighten the suspension fasteners with the weight of the vehicle on the wheels and tires or use a suitable jack to raise the suspension to curb height or damage to the bushings may occur.

   NOTE: Only tighten the nuts and bolts when the suspension is in the normal drive position.

   Tighten the lower arm bracket bolt and nut.
   Torque: 210 lb.ft (285 Nm)

1. NOTICE: Tighten the suspension fasteners with the weight of the vehicle on the wheels and tires or use a suitable jack to raise the suspension to curb height or damage to the bushings may occur.

   NOTE: Only tighten the nuts and bolts when the suspension is in the normal drive position.

   Tighten the rear lower arm-to-frame bolt and nut.
   Torque:
     Stage 1:  66 lb.ft (90 Nm)
     Stage 2:  180°

1. NOTE: If equipped with dynamic suspension.

   1. Install the front ride height sensor arm anchor plate bolt.
      Torque: 80 lb.in (9 Nm)
   2. Connect the ride height sensor electrical connector.
      

1. Install the wheel and tire.
   Refer to: Wheel and Tire (204-04A Wheels and Tires, Removal and Installation).
   

1. Check and if necessary adjust front toe.
   Refer to: Front Toe Adjustment (204-00 Suspension System - General Information, General Procedures).
   Refer to: Front Toe Adjustment - Vehicles With: Adaptive Steering (204-00 Suspension System - General Information, General Procedures).
   

1. NOTE: If equipped with dynamic suspension.

   Calibrate the suspension system. Connect the scan tool and carry out the Ride Height Calibration routine. Follow the scan tool directions.