Valve Seals: Removal

Remove the roller followers. For additional information, refer to CAMSHAFT ROLLER FOLLOWER .
Remove the spark plugs. For additional information, refer to REMOVAL & INSTALLATION - BLACKWOOD, EXPEDITION, F150 PICKUP & NAVIGATOR - GASOLINE .
Position the piston of the cylinder being serviced at the bottom of the stroke.

CAUTION: If air pressure has forced the piston to the bottom of the cylinder, any loss of air pressure will allow the valve to fall into the cylinder. If air pressure must be removed, support the valve prior to removal.

Fig 1: Applying Compressed Air In Cylinder

Courtesy of FORD MOTOR CO.

Use compressed air in the cylinder to hold both valves in position.
Using the special tool, compress the intake valve spring.

Fig 2: Compressing Intake Valve Spring Using Special Tool
Courtesy of FORD MOTOR CO.

NOTE: Valve stem seals should be visually inspected if new seals are not installed.

Fig 3: Removing Valve Spring Retainer Keys, Valve Spring Retainer, Valve Spring And Valve Stem Seal

Courtesy of FORD MOTOR CO.

Remove the valve spring retainer keys, the valve spring retainer, the valve spring and the valve stem seal.
Using the special tool, compress the exhaust valve spring.

Fig 4: Compressing Exhaust Valve Spring Using Special Tool
Courtesy of FORD MOTOR CO.

NOTE: Valve stem seals should be visually inspected if new seals are not installed.

Remove the valve spring retainer keys, the valve spring retainer, the valve spring and the valve stem seal.

Fig 5: Removing Valve Spring Retainer Keys, Valve Spring Retainer, Valve Spring And Valve Stem Seal

Courtesy of FORD MOTOR CO.