Lexus 11101-29407 Head Sub-Assy, Cylinder

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Once the valves and related components have been removed, the head should be thoroughly cleaned and inspected.

The cylinder head should be cleaned with solvent and dried thoroughly before inspection. This ensures that any contaminants or residues are removed from the surface.

Gently tap it into place until it is seated on the guide.

After installing the cylinder heads, you should refill the cooling system, change the oil and filter, run the engine, and check for any leaks.

To prepare for reinstallation, ensure that the mating surfaces of the cylinder head and block are impeccably clean, removing all traces of carbon and old gasket material. Check for any nicks, deep scratches, or other damage on the block and head mating surfaces. Additionally, chase the threads in the cylinder head bolt holes and clean them with compressed air. Run a die down the threads of each bolt to remove corrosion.