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Home >> Lincoln >> 2003 >> Navigator RWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine-5.4L >> Disassembly And Assembly Of Subassemblies >> Cylinder Head >> Disassembly
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Cylinder Head: Disassembly

    CAUTION: Before disassembly begins, mark the valve position on the face of each valve being removed. The valves must be installed in their original positions.
    Fig 1: Installing Special Tool
    G01563193Courtesy of FORD MOTOR CO.
  1. Install the special tool.
  2. Remove the exhaust camshaft sprocket and the intake camshaft bolt, washer and spacer.
    Fig 2: Removing Exhaust Camshaft Sprocket And Intake Camshaft Bolt, Washer And Spacer
    G01563194Courtesy of FORD MOTOR CO.
  3. Compress the tensioner and install a lock pin.
    Fig 3: Installing Lock Pin
    G01563195Courtesy of FORD MOTOR CO.
  4. Remove the special tool.
    Fig 4: Removing Special Tool
    G01563196Courtesy of FORD MOTOR CO.
  5. Remove the timing chain and the camshaft sprocket.
    Fig 5: Removing Timing Chain And Camshaft Sprocket
    G01563197Courtesy of FORD MOTOR CO.
    6. NOTE: LH tensioner shown, RH tensioner similar.
    Fig 6: Removing Tensioner
    G01563198Courtesy of FORD MOTOR CO.
  6. Remove the tensioner.
  7. Install the special tool between the valve spring coils to protect the intake valve stem seal from damage.
    Fig 7: Installing Special Tool Between Valve Spring Coils
    G01563199Courtesy of FORD MOTOR CO.
  8. Using the special tool, compress the intake valve spring. Remove the intake valve spring retainer keys.
    Fig 8: Removing Intake Valve Spring Retainer Keys
    G01563200Courtesy of FORD MOTOR CO.
    9. NOTE: Valve stem seals should be visually inspected if new seals are not installed.
    Fig 9: Removing Valve Spring Retainer, Valve Spring And Valve Stem Seal
    G01563201Courtesy of FORD MOTOR CO.
  9. Remove the special tool, the valve spring retainer, the valve spring and the valve stem seal.
  10. Repeat above three steps to remove all necessary intake valve spring assemblies.
  11. Install the special tool between the valve spring coils to protect the exhaust valve stem seal from damage.
    Fig 10: Installing Special Tool Between Valve Spring Coils
    G01563202Courtesy of FORD MOTOR CO.
  12. Using the special tool, compress the exhaust valve spring. Remove the exhaust valve spring retainer keys.
    Fig 11: Removing Exhaust Valve Spring Retainer Keys
    G01563203Courtesy of FORD MOTOR CO.
    13. NOTE: Valve stem seals should be visually inspected if new seals are not installed.
    Fig 12: Removing Valve Spring Retainer, Valve Spring And Valve Stem Seal
    G01563204Courtesy of FORD MOTOR CO.
  13. Remove the special tool, the valve spring retainer, the valve spring and the valve stem seal.
  14. Repeat above three steps to remove all necessary exhaust valve spring assemblies.
    15. CAUTION: The outer bolts on the outer cam bearing cap (exhaust) are longer and must be returned to the same location or engine damage can occur.
    NOTE: Identify the camshaft-to-cylinder head location. Caps are not interchangeable.
    Fig 13: Removing Bolts And Camshaft Bearing Cap Assemblies
    G01563205Courtesy of FORD MOTOR CO.
  15. Remove the bolts and the camshaft bearing cap assemblies.
  16. Remove the camshafts.
    Fig 14: Removing Camshafts
    G01563206Courtesy of FORD MOTOR CO.
  17. Remove the hydraulic lash adjusters.
    Fig 15: Removing Hydraulic Lash Adjusters
    G01563207Courtesy of FORD MOTOR CO.
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