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Home >> Lincoln >> 2005 >> Aviator AWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine >> In-Vehicle Repair >> Valve Seals >> Removal
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Valve Seals: Removal

  1. Remove the roller followers. For additional information, refer to CAMSHAFT ROLLER FOLLOWER .
    2. NOTE: Position the piston of the cylinder to be serviced at the bottom of the stroke.
    Fig 1: Applying Compressed Air To Cylinder
    G03862436Courtesy of FORD MOTOR CO.
  2. Use compressed air in the cylinder to be serviced to hold both valves in position.
  3. Install the special tool between the valve spring coils to protect the exhaust valve stem seal from damage.
    Fig 2: Installing Special Tool Between Valve Spring Coils
    G03862437Courtesy of FORD MOTOR CO.
  4. Using the special tool, compress the exhaust valve spring. Remove the exhaust valve spring retainer keys.
    Fig 3: Compressing Exhaust Valve Spring
    G03862438Courtesy of FORD MOTOR CO.
  5. Install the special tool between the valve spring coils to protect the intake valve stem seal from damage.
    Fig 4: Installing Special Tool Between Valve Spring Coils To Protect Intake Valve Stem Seal
    G03862439Courtesy of FORD MOTOR CO.
  6. Using the special tool, compress the intake valve spring. Remove the intake valve spring retainer keys.
    Fig 5: Compressing Intake Valve Spring
    G03862440Courtesy of FORD MOTOR CO.
    7. NOTE: Valve stem seals should be visually inspected if new seals are not installed.
    Fig 6: Removing Valve Spring Retainer Valve Spring And Valve Stem Seal
    G03862441Courtesy of FORD MOTOR CO.
  7. Remove the valve spring retainer, the valve spring and the valve stem seal.
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