Toyota 11101-21060 Head Sub-Assy, Cylinder

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It may be more practical and cost-effective for home mechanics to purchase a reconditioned head rather than dismantling and reconditioning the original head because specialized tools may be required and new components may not be readily available.

Place the cylinder head flat on the bench and tap the end of each valve stem with a hammer and block of wood to settle the components.

Thoroughly clean the cylinder head and valve components, ensuring all old gasket material and sealing compound are removed without damaging the surfaces. Clean the combustion chambers and ports, as well as the valves, using a wire brush and suitable solvent. If necessary, steam-clean the head and clean all oil holes and galleries. Inspect the cylinder head for cracks, coolant leakage, and other damage. Check the surface for distortion and the valve seats for pitting or burning. Replace or recut the valve seats if necessary. Replace worn valve guides and tappet bores. Examine the camshaft bearing surfaces. Inspect the valves for wear, pitting, cracks, and scoring on the stem. Measure the valve stem diameter and replace any valves with significant wear. Grind the valves into their seats using coarse and fine carborundum paste. Check the valve springs for damage and measure their free length. Replace any damaged or distorted springs. Inspect the tappets for scoring and wear ridges. Renew any necessary components. Replace the valve stem oil seals.

The cylinder head bolts should be loosened and removed along with the washers.