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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 82 (Engine Mechanical - 4.6L (3V)) >> Disassembly And Assembly Of Subassemblies >> Cylinder Head >> Disassembly

Cylinder Head: Disassembly

WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the bolts and the variable camshaft timing (VCT) housing.
    • Discard the gasket.
  2. Lubricate the camshaft and camshaft journals with clean engine oil and install the camshaft.
    3. NOTE: The camshaft must be installed in the head to use the special tool necessary to compress the valve springs.
    NOTE: Lubricate the camshaft bearing caps with clean engine oil.
  3. Install the camshaft bearing caps in their original locations.
    • Position the front camshaft bearing cap.
    • Position the remaining camshaft bearing caps.
    • Install the bolts finger-tight.
  4. Using the special tool, compress the valve spring and remove the valve spring retainer keys.
    5. Fig 1: Compressing Valve Spring With Special Tool (303-1039)
    G03920063Courtesy of FORD MOTOR CO.
  5. Remove the valve spring retainer, the valve spring and the valve seal.
    • Discard the valve seal.
  6. Remove the valve from the cylinder head.
  7. Repeat the previous 3 steps for each valve.
  8. Inspect the components. For additional information, refer to ENGINE SYSTEM - GENERAL INFORMATION .
    9. CAUTION: Remove the front thrust camshaft bearing cap straight upward from the bearing towers or the bearing cap may be damaged from side loading.
  9. Remove the 2 bolts and the cylinder head camshaft front bearing cap.
    10. Fig 2: Removing Camshaft Front Bearing Cap Bolts
    GF0005526Courtesy of FORD MOTOR CO.
    CAUTION: The camshaft bearing caps must be installed in their original locations. Record camshaft bearing cap locations. Failure to follow these instructions may result in engine damage.
  10. Remove the remaining bolts in the sequence shown and remove the cylinder head camshaft bearing caps.
    11. Fig 3: Removing Camshaft Bearing Caps Bolts In Sequence
    GF0005527Courtesy of FORD MOTOR CO.
  11. Remove the camshaft.
  12. Check the cylinder head for distortion. For additional information, refer to ENGINE SYSTEM - GENERAL INFORMATION .
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