Lincoln Aviator: Engine System - General Information / General Procedures - Valve Stem Diameter
Check
NOTE:
Refer to the appropriate Section 303-01 for the specification.
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Measure the diameter of each intake and exhaust valve
stem at the points shown. Verify the diameter is within specification.
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...
Other information:
Removal
NOTE:
Removal steps in this procedure may contain installation details.
NOTE:
LH side shown, RH side similar.
Remove the screws.
Torque:
22 lb.in (2.5 Nm)
Using a non-marring trim tool, detach the retainer clips...
Materials
Name
Specification
Motorcraft® High Performance Engine RTV SiliconeTA-357
WSE-M4G323-A6
Motorcraft® Silicone Gasket RemoverZC-30-A
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Motorcraft® Metal Surface Prep WipesZC-31-B
-
Motorcraft® Metal Brake Parts CleanerPM-4-A, PM-4-B
-
Removal
NOTICE:
During engine repair procedures, cleanliness is extremely
important...