Toyota 11102-29055 Head, Cylinder, LH

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Clean and inspect the cylinder head and valve train components to identify necessary valve service work during engine overhaul. Remove old gasket material from the head gasket, intake and exhaust manifold sealing surfaces. Clean scale from coolant passages and remove deposits from various holes with a wire brush. Clean the cylinder head, lifters, valve springs, spring seats, keepers, and retainers with solvent. Remove deposits from the valves with a motorized wire brush. Inspect the head for cracks, coolant leakage, and damage. Check the head gasket surface for warpage and the valve seats in the combustion chambers. Check valve stem-to-guide clearance and deflection. Inspect each valve face for wear, deformation, cracks, pits, and burned areas. Measure each valve's margin width. Check valve springs for wear and measure their free length. Inspect spring retainers and keepers for wear and cracks. Replace any damaged or excessively worn parts. If valve components are worn beyond limits, reassemble the valves in the cylinder head.

The cylinder head cleaning and inspection process should be started after completing the engine disassembly procedures, if a complete engine overhaul is being done.

Make sure not to mix up the intake and exhaust seals.

Before starting the cylinder head removal process, you should disconnect the negative battery cable and drain the cooling system, including the engine block.

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.