Toyota 11101-09050 Head Sub-Assy, Cylinder

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Ensure the engine is cool before starting. Disconnect the battery cable, drain coolant and engine oil. Remove front suspension upper brace on Solara models, throttle body, fuel injectors, intake and exhaust manifold, timing belt, camshaft sprocket, upper idler pulley, camshafts, lifters, alternator, distributor, and power steering pump. Loosen cylinder head bolts in 1/4-turn increments, then lift the cylinder head off the engine block. Remove all external components from the head for cleaning. Ensure the mating surfaces of the cylinder head and block are clean, removing all traces of carbon and old gasket material. Check for damage on the block and head mating surfaces. Clean the threads in the cylinder head bolt holes and apply clean engine oil to the threads before installing the bolts. Reinstall the components, set the valves, refill the cooling system, add oil, check for leaks, set ignition timing, and conduct a road test.

Cylinder heads, new or rebuilt, are readily available at dealerships and auto parts stores. Specialized tools and parts needed for disassembly and inspection may make it more cost-effective for home mechanics to buy replacements. Cylinder head disassembly involves removing intake and exhaust valves and related components, assuming lifters or rocker arms and camshaft(s) are already removed. Before removing valves, label and store them for reinstallation in the same valve guides. Use a spring compressor to remove the springs on the first valve and its components. If a valve binds, deburr the area around the keeper groove. Repeat for all valves, keeping parts together for reinstallation. After removal, clean and inspect the head. If overhauling the entire engine, complete engine disassembly before cleaning and inspecting the cylinder head.

After installing the cylinder head, you should reinstall the components that were removed, check and adjust the valves as necessary, change the engine oil and filter, refill the cooling system, run the engine, and check for leaks.

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

Use a valve spring compressor to compress the springs.

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

To remove the cylinder heads, you'll need to disconnect electrical connectors, remove bolts, and follow a specific sequence. If the heads are stuck, you can use a wood block and hammer for assistance.