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)
Coolant/Battery RefractometerROB75240 or equivalent
D-Gas Adapter300-OTC014-R1068 or equivalent
Radiator Tester014-R1072 or equivalent
UView® Combustion Leak TesterUVU560000-R
Diagnostic Trouble Code (DTC) Chart
WARNING:
Before beginning any service procedure in this section,
refer to Safety Warnings in section 100-00 General Information...
Removal
NOTE:
Removal steps in this procedure may contain installation details.
NOTE:
LH side shown, RH side similar.
Remove the front bumper cover.
Refer to: Front Bumper Cover (501-19 Bumpers, Removal and Installation).
Remove the headlamp assembly bolts...