Mercury F5AZ-6049-A Cylinder Head Assembly

You can Select Your Vehicle to check if F5AZ-6049-A fits your vehicle.

Remove the valve cover(s), pushrods, intake manifold, drive belts, idler pulley bracket, Thermactor valve and pump, and crossover tube first. For the left cylinder head, take out and unbolt the air conditioning compressor and bracket(s). Disconnect the fuel line from the right cylinder head and remove the exhaust manifold(s). Then draw on cardboard around each cylinder and bolt pattern using a new head gasket. Loosen the head bolts in 1/4 turn increments; store them; then lift off the heads. When installing, clean surfaces; check for damage; chase holes for bolts; position new gasket(s). Put heads in place on the block after oiling bolt threads and tighten them according to this sequence. Finally, perform the reverse order of the remaining steps plus change the engine oil & filter before starting the engine.

Follow the recommended sequence and tighten the bolts in three steps.

Specialized tools are necessary for the disassembly and inspection procedures of cylinder heads.

Lubricate and install the valves, then install new seals on each of the valve guides. Using a hammer and deep socket, gently tap each seal into place until it's seated on the guide.

Measure valve stem-to-guide clearance, scrutinize valves for wear, deformation, cracks, and margin width (which should be at least 1/32-inch).

Lubricate and install the first valve.

Inspect the head very carefully for cracks, evidence of coolant leakage, and other damage. If cracks are found, check with an automotive machine shop concerning repair. If repair isn't possible, a new cylinder head should be obtained.

Separate the exhaust manifold-to-exhaust pipe(s) (Section 12).

Remove the rocker arm nuts, pivot balls, and rocker arms from the cylinder head studs, and label the parts or store them separately to ensure they can be reinstalled in their original locations.

Unbolt the power steering pump and tie it aside in an upright position. Leave the hoses connected.

Detach the fuel line from the clip at the front of the head, if applicable.

It may be more practical and economical because some specialized tools are necessary for the disassembly and inspection procedures, and replacement parts may not be readily available.

Remove the intake manifold (Section 11).

Install the rocker arms and fulcrums on the cylinder head studs.

Clean all the valve springs, spring seats, keepers, and retainers (or rotators) with solvent and dry them thoroughly. Work the components from one valve at a time to avoid mixing up the parts.