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Home >> Ford >> 2002 >> Thunderbird >> Repair and Diagnosis >> External Pages >> Different car >> Section 295 (Engine - 6.8L (3V) -- F250-F550 Super Duty) >> Disassembly And Assembly Of Subassemblies >> Cylinder Head >> Disassembly

Cylinder Head: Disassembly

WARNING: This page is about a different car, the 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

    All cylinder heads 

  1. Remove the bolts and the variable camshaft timing housing.
    • Discard the gasket.
  2. Lubricate the camshaft and camshaft journals with clean engine oil and install the camshaft.

    3. RH cylinder head 

  3. Install the camshaft bearing caps in their original locations.
    • Lubricate the camshaft bearing caps with clean engine oil.
    • Position the front camshaft bearing cap.
    • Position the remaining camshaft bearing caps.
    • Install the bolts finger tight.

    4. LH cylinder head 

  4. Install the listed camshaft bearing caps in their original positions.
    • Lubricate the camshaft bearing caps with clean engine oil.
    • Position the front camshaft bearing cap.
    • Position the 2 center and the rear camshaft bearing caps.
    • Install the bolts finger tight.

    5. All cylinder heads 

  5. Using the special tool, compress the valve spring and remove the valve spring retainer keys.
    Fig 1: Compressing Valve Spring
    G03920063Courtesy of FORD MOTOR CO.
  6. Remove the valve spring retainer, the valve spring and the valve seal.
    • Discard the valve seal.
  7. Remove the valve from the cylinder head.
  8. Repeat the previous 3 steps for each valve.
  9. Inspect the components. For additional information, refer to ENGINE SYSTEM-GENERAL INFORMATION .
    10. CAUTION: Remove the front thrust camshaft bearing cap straight upward from the bearing towers, or the bearing cap may be damaged from sideloading.
  10. Remove the bolts, the front camshaft bearing cap and then the remaining bearing caps.
  11. Remove the camshaft.
  12. Check the cylinder head for distortion. For additional information, refer to ENGINE SYSTEM-GENERAL INFORMATION .
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