Lincoln Nautilus: Engine System - General Information / Valve Guide Inner Diameter. General Procedures
Lincoln Nautilus 2018-2025 Service Manual / Powertrain / Engine / Engine System - General Information / Valve Guide Inner Diameter. General Procedures
Check
NOTE: Refer to the appropriate Section 303-01 for the specification.
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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.
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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.
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Measure the ball gauge with a micrometer.
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If the valve guide is not within specifications, install a new cylinder head assembly.
-
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.
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Spark Plug Inspection. General Procedures
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...
Valve Stem Diameter. General Procedures
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 Nautilus 2018-2025 Owners Manual: What Is the Gross Combined Weight Rating
Gross Combined Weight Rating (GCWR) is the maximum allowable weight of the vehicle and the loaded trailer, including all cargo and passengers, that the vehicle can handle without risking damage. (Important: The towing vehicle’s braking system is rated for operation at Gross Vehicle Weight Rating, not at Gross Combined Weight Rating...
Lincoln Nautilus 2018-2025 Service Manual: Hands-Free Liftgate Actuation Module. Removal and Installation
Removal NOTE: Removal steps in this procedure may contain installation details. Remove the rear bumper cover. Refer to: Rear Bumper Cover (501-19 Bumpers, Removal and Installation). Disconnect the electrical connectors, remove the screws and the hands-free liftgate actuation module...
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