Lincoln Aviator: Intake Air Distribution and Filtering - 3.0L EcoBoost/3.0L EcoBoost – Hybrid (BQ) / General Procedures - Charge Air Cooler (CAC) Cleaning

Cleaning

  1. Remove the Turbocharger Boost Pressure (TCBP) sensor from the CAC.
    Refer to: Turbocharger Boost Pressure (TCBP) and Charger Air Cooler Temperature (CACT) Sensor (303-14A Electronic Engine Controls - 3.0L EcoBoost/3.0L EcoBoost – Hybrid (BQ), Removal and Installation).
  1. NOTICE: Do not use a high-pressure power washer to clean the CAC or damage to the CAC may occur.

    NOTE: Drain all contaminates such as coolant, fuel and oil prior to cleaning the CAC.

    NOTE: Thoroughly clean the joint clamp areas as well as the turbocharger connection, engine connection and the CAC connections, using metal brake parts cleaner.

    Lay the CAC flat with the inlet and outlet ports pointing up.
  1. NOTE: Plug or cap the CAC openings prior to agitating.

  1. Add an appropriate amount of commercially available detergent cleaner such as Simple Green Pro HD, or equivalent to the CAC. Follow the manufacturer's directions for cleaning. Fill the CAC to 40% of its volume with water.
  1. Raise one end of the CAC and agitate it by hand for at least 5 minutes.
  1. Raise the opposite end of the CAC and agitate it by hand for at least 5 minutes.
  1. Drain the CAC.
  1. Flush the CAC thoroughly with clean water.
  1. Repeat Steps 2 through 8 until no contaminates are found in the flush water.
  1. Allow the CAC to air dry.
  1. NOTE: The following leak test steps must be performed prior to installing the CAC.

    Install the Turbocharger Boost Pressure (TCBP) sensor on the CAC.
    Refer to: Turbocharger Boost Pressure (TCBP) and Charger Air Cooler Temperature (CACT) Sensor (303-14A Electronic Engine Controls - 3.0L EcoBoost/3.0L EcoBoost – Hybrid (BQ), Removal and Installation).
  1. NOTE: Use a commercially available kit, such as the Johnson Manufacturing Company Charge Air Cooler Test Set Part No. 351-CAS, or equivalent.

    Install the commercially available cooler tester on the CAC following the manufacturer's installation instructions.
  1. Tighten the clamps.
    Torque: 44 lb.in (5 Nm)
  1.   WARNING: Never exceed the specified pressure. Excessive pressure may cause the test adapter to blow off or may damage the charge air cooler (CAC). Failure to follow this instruction may result in serious personal injury.

    Slowly apply air pressure.
    Pressure: 21.8  psi ( 150  kPa)
  1. Let the CAC stand for a few minutes and note any loss in pressure.
  1. Release the air pressure.
  1. Repeat Steps 14 through 16 as many times as necessary to verify the readings. The reading is considered verified when 3 consecutive tests show approximately the same pressure drop.
  1. If the pressure loss exceeds 10 kPa (1.5 psi) per minute, install a new CAC.
    Refer to: Charge Air Cooler (CAC) (303-12 Intake Air Distribution and Filtering - 3.0L EcoBoost/3.0L EcoBoost – Hybrid (BQ), Removal and Installation).

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