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Home › Mercury › 2003 › Marauder › Repair and Diagnosis › Engine Mechanical › Mechanical › Engine 4.6L › Disassembly And Assembly Of Subassemblies › Cylinder Head › Disassembly

Cylinder Head: Disassembly

    CAUTION: Do not place the cylinder head flat on the bench; the valves will bend.
    CAUTION: Before disassembly begins, mark the valve position on the face of each valve being removed. The valves must be re-installed into the same positions.
    Fig 1: Installing Special Tool
    G01604756Courtesy of FORD MOTOR CO.
  1. Install the special tool.
  2. Using the special tool, compress the intake valve spring.
    Fig 2: Compressing Intake Valve Spring
    G01604757Courtesy of FORD MOTOR CO.
    3. 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
    G01604758Courtesy of FORD MOTOR CO.
  3. Remove the valve spring retainer keys, the valve spring retainer, the valve spring and the valve stem seal.
  4. Using the special tool, compress the exhaust valve spring.
    Fig 4: Compressing Exhaust Valve Spring
    G01604759Courtesy of FORD MOTOR CO.
    5. NOTE: Valve stem seals should be visually inspected if new seals are not installed.
    Fig 5: Removing Valve Spring Retainer Keys, Valve Spring Retainer, Valve Spring And Valve Stem Seal
    G01604760Courtesy of FORD MOTOR CO.
  5. Remove the valve spring retainer keys, the valve spring retainer, the valve spring and the valve stem seal.
  6. Remove the exhaust camshaft sprocket and the intake camshaft bolt, washer and spacer.
    Fig 6: Removing Exhaust Camshaft Sprocket And Intake Camshaft Bolt, Washer And Spacer
    G01604761Courtesy of FORD MOTOR CO.
  7. Compress the tensioner and install a lock pin.
    Fig 7: Compressing Tensioner And Installing A Lock Pin
    G01604762Courtesy of FORD MOTOR CO.
  8. Remove the timing chain and the camshaft sprocket.
    Fig 8: Removing Timing Chain And Camshaft Sprocket
    G01604763Courtesy of FORD MOTOR CO.
    9. NOTE: LH tensioner is shown, RH tensioner is similar.
    Fig 9: Removing Tensioner
    G01604764Courtesy of FORD MOTOR CO.
  9. Remove the tensioner.
  10. Remove the camshafts.
    Fig 10: Removing Camshafts
    G01604765Courtesy of FORD MOTOR CO.
  11. Remove the hydraulic lash adjusters.
    Fig 11: Removing Hydraulic Lash Adjusters
    G01604766Courtesy of FORD MOTOR CO.
  12. Remove the valve stem seals.
    Fig 12: Removing Valve Stem Seals
    G01604767Courtesy of FORD MOTOR CO.
    13. 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 Camshaft Bearing Cap Assemblies
    G01604768Courtesy of FORD MOTOR CO.
  13. Remove the bolts and the camshaft bearing cap assemblies.
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