Lincoln Aviator 2020-2025 Service Manual / Powertrain / Engine / Engine System - General Information / General Procedures - Valve Guide Inner Diameter

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

Check

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

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 2020-2025 Service Manual: Removal and Installation - Brake Caliper Anchor Plate

Removal NOTE: Removal steps in this procedure may contain installation details. Remove the brake pads. Refer to: Brake Pads (206-03 Front Disc Brake, Removal and Installation). Remove the bolts and the anchor plate. Discard the bolts Torque: 129 lb...

Lincoln Aviator 2020-2025 Owners Manual: SelectShift Automatic™ Transmission

Your vehicle has a SelectShift Automatic transmission. The SelectShift Automatic transmission gives you the ability to change gears up or down, without a clutch, as preferred. To prevent the engine from running at too low an RPM, which could cause it to stall, SelectShift still makes some downshifts if it determines that you have not downshifted in time...

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.