Lincoln Aviator: Engine System - General Information / General Procedures - Valve Guide Inner Diameter

Check

NOTE: Refer to the appropriate Section 303-01 for the specification.

  1. NOTE: Valve guides tend to wear in an hourglass pattern. The ball gauge can be inserted into the combustion chamber side of the valve guide, if necessary.

    • Use a ball gauge to determine the inside diameter of the valve guides in 2 directions at the top, middle and bottom of the valve guide.
    • Measure the ball gauge with a micrometer.
    • If the valve guide is not within specifications, install a new cylinder head assembly.

    General Procedures - Spark Plug Inspection

    Inspection NOTE: Dropped spark plugs should always be discarded. Unfired An unfired spark plug should appear very clean with a pure nickel finish to the threads and ground strap...

    General Procedures - Valve Stem Diameter

    Check NOTE: Refer to the appropriate Section 303-01 for the specification. Measure the diameter of each intake and exhaust valve stem at the points shown...

    Other information:

    Lincoln Aviator 2020-2022 Service Manual: General Procedures - Air Conditioning (A/C) System Leak Test Using Forming Gas - Vehicles With: R134A Refrigerant/R1234YF Refrigerant


    Special Tool(s) / General Equipment Forming Gas Pressure Gauge and Leak Detector Materials Name Specification Forming Gas -  Leak detection All vehicles NOTE: Use a Rotunda-approved Tracer Gas A/C System Dealership Leak Detection Service Kit that meets SAE J2790...

    Lincoln Aviator 2020-2022 Owners Manual: Adaptive Cruise Control Precautions - Vehicles With: Adaptive Cruise Control With Stop and Go


    WARNING: You are responsible for controlling your vehicle at all times. The system is designed to be an aid and does not relieve you of your responsibility to drive with due care and attention. Failure to follow this instruction could result in the loss of control of your vehicle, personal injury or death...

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    Fastening the Seatbelts

    The front outboard and rear safety restraints in the vehicle are combination lap and shoulder belts.

    Insert the belt tongue into the proper buckle (the buckle closest to the direction the tongue is coming from) until you hear a snap and feel it latch. Make sure that you securely fasten the tongue in the buckle.

    Lincoln Aviator. Fastening the Seatbelts

    To unfasten, press the release button and remove the tongue from the buckle.

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