Lincoln Navigator: Climate Control System - General Information / Air Conditioning (A/C) Compressor. Removal and Installation

Removal

NOTICE: If installing a new A/C compressor due to an internal failure of the old unit, carry out the following procedures to remove contamination from the A/C system. Failure to remove contamination from the A/C system, if present, will result in poor A/C performance and/or damage to the new A/C compressor and other components.

• If A/C flushing equipment is available, carry out flushing of the A/C system prior to installing a new A/C compressor.
• If A/C flushing equipment is not available, replace all contaminated components after a new A/C compressor has been installed.
• Install a new Thermostatic Expansion Valve (TXV) as directed by the A/C flushing.
• Install a new receiver drier element as directed by the A/C flushing.

NOTICE: During the removal of components, cap, tape or otherwise appropriately protect all openings to prevent the ingress of dirt or other contamination. Remove protective materials prior to installation.

NOTE: Installation of a new receiver drier element is not required when repairing the A/C system except when there is physical evidence of system contamination from a failed A/C compressor or damage to the receiver drier element.

NOTE: A new A/C compressor may come equipped with an A/C clutch disc and hub, A/C compressor pulley and A/C clutch field coil already installed. If these components are not pre-installed, it will be necessary to transfer these parts from the old A/C compressor to the new compressor prior to installation of the A/C compressor if suitable for reuse.

NOTE: Removal steps in this procedure may contain installation details.

1. Recover the refrigerant.
   Refer to: Air Conditioning (A/C) System Recovery, Evacuation and Charging (412-00 Climate Control System - General Information, General Procedures).
   

1. Remove the RH air cleaner outlet pipe.
   Refer to: Air Cleaner Outlet Pipe RH (303-12 Intake Air Distribution and Filtering - 3.5L EcoBoost (272kW/370PS), Removal and Installation).
   

1. Remove the RH CAC intake pipe.
   Refer to: Charge Air Cooler (CAC) Intake Pipe (303-12 Intake Air Distribution and Filtering - 3.5L EcoBoost (272kW/370PS), Removal and Installation).
   

1. Remove the A/C compressor belt.
   Refer to: Air Conditioning (A/C) Compressor Belt (303-05 Accessory Drive - 3.5L EcoBoost (272kW/370PS), Removal and Installation).
   

1. Remove the retainers and remove the support bracket.
   Torque: 53 lb.in (6 Nm)

1. Remove the battery tray.
   Refer to: Battery Tray (414-01 Battery, Mounting and Cables, Removal and Installation).
   

1. 
   Remove the A/C compressor inlet and outlet line retainers and disconnect the fittings.
   
   • Make sure to cover any open ports to prevent debris from entering the system.
     Torque: 133 lb.in (15 Nm)

1. NOTE: Frame removed for clarity.

   1. Disconnect the electrical connectors.
      
   2. Detach the wiring harness retainer and position aside the wiring harness.
      

1. NOTE: Frame removed for clarity.

   Remove the bolts and the A/C compressor.
   

Installation

1. To install, reverse the removal procedure.
   

1. NOTE: Frame removed for clarity.

   Tighten the A/C compressor bolts in the sequence shown.
   Torque: 18 lb.ft (25 Nm)

1. NOTICE: Only use the specified material to lubricate the seals.

   Install and lubricate new O-ring seals. Refer to the appropriate.
   Refer to: Specifications (412-00 Climate Control System - General Information, Specifications).
   

1. Lubricate the refrigerant system with the correct amount of clean PAG oil..
   Refer to: Refrigerant Oil Adding (412-00 Climate Control System - General Information, General Procedures).