Aviator 2WD V8-4.6L DOHC (2003)
3. Using the special tool, compress the exhaust valve spring. Remove the exhaust valve spring retainer keys.
4. NOTE: Valve stem seats should be visually inspected if new seats are not installed.
Remove the special tool, the valve spring retainer, the valve spring and the valve stem seal.
Items 5-8: Intake Valve Spring Retainer Keys, Valve Springs and Valve Seals Removal Note
NOTE: Carry out the steps for each cylinder requiring service.
1. NOTE: Position the piston of the cylinder to be serviced at the bottom of the stroke.
Use compressed air in the cylinder to be serviced to hold both valves in position.
2. Install the special tool between the valve spring coils to protect the intake valve stem seal from damage.
