Lincoln Aviator: Engine System - General Information / 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. 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:
Special Tool(s) /
General Equipment
Vehicle/Axle Stands
Removal
NOTICE:
Suspension fasteners are critical parts that affect the
performance of vital components and systems. Failure of these fasteners
may result in major service expense...
Apply the parking brake.Note: If vehicle battery is dead, for
example,
no electrical power is available, you could
require an external power source to apply
the parking brake.
Using the key or a flat head screwdriver
4.7 in (120 mm), carefully open the access
cover under the arm rest console...