Ford 3S4Z-6049-AAA Cylinder Head Assembly

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It is preferable to keep the front wheels on the ground as much as possible to make working on the top of the engine easier. Once the right-hand engine mount is removed, further support for the engine is needed if the front of the car is raised.

New and reconditioned cylinder heads are available from manufacturers and engine overhaul specialists.

1. Examine the valve springs for signs of damage and discoloration, and measure their free length. If any springs are damaged, distorted, or have lost their tension, obtain a complete set of new springs. 2. Stand each spring on a flat surface and check it for squareness. 3. Check the retainers and keepers for obvious wear and cracks. Any questionable parts should be replaced. 4. Check the cam followers.

Disconnect the coolant hoses from the coolant housing on the left-hand end of the cylinder head.

The remainder of installation is the reverse of the removal steps.

Lubricate the new valve stem oil seals and install them to the cylinder head, pressing them in squarely using a deep socket of suitable diameter. Note that the intake and exhaust seals are usually different colors: green for the intake valves and red for the exhaust valves.