Lexus 11101-29405 Head Sub-Assy, Cylinder

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To remove the cylinder heads, carefully lift each head off the engine block. If a head is stuck, you can use a wood block and hammer to aid in its removal. This process should be repeated for both cylinder heads if necessary.

Check the valve spring installed height with a dial or vernier caliper.

Before accessing the cylinder head, you need to remove various components, including the throttle body, fuel injectors, fuel rail, intake manifold, exhaust manifold, timing belt, camshaft sprocket, upper idler pulley, upper rear timing belt cover, camshaft position sensor, camshafts, lifters, alternator, distributor, power steering pump, and various fittings, tubes, cables, hoses, and wires. These components are removed to provide clear access to the cylinder head for removal.

New and rebuilt cylinder heads are commonly available at dealerships and auto parts stores.

Valve train components such as lifters, valve springs, spring seats, keepers, and retainers should be cleaned with solvent and dried thoroughly before inspection.