Lincoln Aviator: Uni-Body, Subframe and Mounting System / Removal and Installation - Front Subframe

Special Tool(s) / General Equipment

	303-050 (T70P-6000) Lifting Bracket, Engine
	303-F070 Support Bar, Engine TKIT-1999A-F/LT TKIT-1999A-FM/FLM

Removal

NOTICE: Suspension fasteners are critical parts that affect 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. With the vehicle in NEUTRAL, position it on a hoist.
   Refer to: Jacking and Lifting (100-02 Jacking and Lifting, Description and Operation).
   

1. Using a suitable holding device, hold the steering wheel in the straight-ahead position.
   

1. Remove the retainers and the upper radiator panel.
   

1. Remove the bolts and the suspension support bar.
   Torque: 22 lb.ft (30 Nm)

1. Remove the following items:
   1. Charge air cooler outlet pipe.
      Refer to: Charge Air Cooler (CAC) Outlet Pipe (303-12 Intake Air Distribution and Filtering - 3.0L EcoBoost/3.0L EcoBoost – Hybrid (BQ), Removal and Installation).
      
   2. Coolant pump.
      Refer to: Coolant Pump (303-03A Engine Cooling - 3.0L EcoBoost, Removal and Installation).
      

1. • Remove the coolant pipe bracket retaining bolts.
     Torque: 97 lb.in (11 Nm)
   • Remove the intake manifold bracket retaining bolts.
     Torque: 97 lb.in (11 Nm)
   • Remove the intake manifold bracket.
     

1. • Detach the wiring harness retainers.
     
   • Remove the coolant pipe bolts.
     Torque: 97 lb.in (11 Nm)
   • Position the coolant pipe aside.
     

1. • Disconnect the vacuum tubes.
     
   • Detach the retainer and position the vacuum tubes aside.
     

1.   WARNING: Do not reuse steering column shaft bolts. This may result in fastener failure and steering column shaft detachment or loss of steering control. Failure to follow this instruction may result in serious injury to vehicle occupant(s).

   
   
   • Remove and discard the steering column shaft bolt.
     Torque: 22 lb.ft (30 Nm)
   • Separate the steering column shaft coupler from the EPAS gear.
     

1. Remove the engine front cover bolts.
   Torque:
     Stage 1:  177 lb.in (20 Nm)
     Stage 2:  45°

1. Using two M8 x 1.25 x 105 mm bolts and two washers, install the special tools to the engine.
   Install Special Service Tool: 303-050 (T70P-6000)  Lifting Bracket, Engine.

1. Install Special Service Tool: 303-F070  Support Bar, Engine.

1. Remove the following items:
   1. Front wheels and tires.
      Refer to: Wheel and Tire (204-04A Wheels and Tires, Removal and Installation).
      
   2. LH catalytic converter.
      Refer to: Catalytic Converter LH (309-00A Exhaust System - 3.0L EcoBoost, Removal and Installation).
      

1. If equipped.
   
   • Remove pin-type retainer.
     
   • Remove the bolts and the underbody shield.
     Torque: 22 lb.in (2.5 Nm)

1. If equipped.
   
   • Remove the pin-type retainers, bolts and the rear underbody shield.
     Torque: 22 lb.in (2.5 Nm)

1. On both sides.
   Remove the wheel arch liner to front subframe retainers.
   

1. NOTICE: Use the internal or external hex-holding feature to prevent the ball and stud from turning while removing or installing the stabilizer bar link nuts. The link boot seal must not be allowed to twist while tightening the link nuts or damage to the boot seal will occur.

   On both sides
   Remove and discard the nut and position the sway bar link aside.
   Torque: 129 lb.ft (175 Nm)

1. On both sides
   Remove and discard the strut nut and bolt.
   Torque: 210 lb.ft (285 Nm)

1. NOTICE: Do not use a hammer to separate the tie rod end from the wheel knuckle or damage to the wheel knuckle may result.

   NOTICE: Use care when installing the tie rod separator or damage to the tie rod end boot may occur.

   NOTE: Use the hex-holding feature to prevent turning of the stud while removing the tie rod end nut.

   
   
   1. On both sides.
      Remove and discard the tie rod end nut.
      Torque: 52 lb.ft (70 Nm)
   2. On both sides.
      Separate the tie rod end from the wheel knuckle.
      

1. On both sides.
   Remove and discard the front lower arm outboard nut.
   Torque: 66 lb.ft (90 Nm)

AWD

1. NOTICE: Failure to remove the AWD front halfshaft during lower control arm removal will cause damage to the front halfshaft.

   Remove the front halfshaft.
   Refer to: Halfshaft (205-04 Front Drive Halfshafts, Removal and Installation).
   

All vehicles

1. NOTICE: Do not use a prying device or separator fork between the ball joint and the wheel knuckle. Damage to the ball joint or ball joint seal may result. Only use the pry bar by inserting it into the lower arm body opening.

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

   • Separate the front lower arm from the wheel Knuckle.
     

1. NOTE: If equipped with dynamic suspension.

   On Both sides
   
   1. Disconnect the ride height sensor electrical connector and separate the wiring harness guide.
      
   2. Remove the ride height sensor arm anchor plate bolt.
      

1. 
   
   1. Remove and discard the rear lower arm outboard nut.
      Torque: 136 lb.ft (185 Nm)
   2. Dettach the rear lower arm from the wheel knuckle.
      

1. Remove the retainers and the LH (left-hand) steering gear splash shield
   

1. Remove the retainers and the RH (right-hand) steering gear splash shield.
   

1. Disconnect the EPAS gear harness electrical connectors.
   

1. Detach the HO2S wiring harness retainers from the RH subframe.
   

1. NOTE: Single vacuum tube system shown, dual vacuum tube system similar.

   Disconnect the vacuum tube(s).
   

1. Unclip and position aside the EPAS gear harness.
   

1. Detach the HO2S wiring harness retainers from the LH subframe.
   

1. NOTE: Single vacuum tube system shown, dual vacuum tube system similar.

   Disconnect the vacuum tube(s).
   

1. Unclip the oil cooler hose retainer and mounting bracket bolt from the front subframe.
   Torque: 71 lb.in (8 Nm)

1. Detach the air suspension tube retainers.
   

1. Remove the bolts and position the underbody shield aside.
   Torque: 22 lb.in (2.5 Nm)

1. Remove the front radiator support bar bolts.
   Torque: 46 lb.ft (63 Nm)

1. Support the front and rear of the subframe with adjustable jack stands.
   

1. NOTICE: Only use hand tools when removing the engine mount nuts or damage to the engine mount can occur.

   • Remove the LH and RH engine mount nuts.
     Torque: 184 lb.ft (250 Nm)
   • Discard the engine mount nuts.
     

1. On both sides.
   Mark the front subframe location.
   

1. On both sides.
   Mark the rear subframe location.
   

1. Remove and discard the rear subframe bolts.
   Torque:
     Stage 1:  52 lb.ft (70 Nm)
     Stage 2:  90°

1. Remove and discard the middle subframe bolts.
   Torque: 195 lb.ft (265 Nm)

1. Remove and discard the front subframe bolts.
   Torque: 195 lb.ft (265 Nm)

1. With the aid of an assistant, lower the front subframe assembly from the vehicle.
   

Installation

1. To install, reverse the removal procedure.
   

1. Install the wheels and tires.
   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).