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:
Pressure release
With the vehicle in NEUTRAL, position it on a hoist.
Refer to: Jacking and Lifting (100-02 Jacking and Lifting, Description and Operation).
Remove the fasteners.
Remove the nuts...
Removal
Remove the accessory drive belt.
Refer to: Accessory Drive Belt (303-05A Accessory Drive - 3.0L EcoBoost, Removal and Installation).
Remove the following items:
Torque:
18 lb.ft (25 Nm)
Torque:
35 lb...