Toyota 11101-09131 Head Sub-Assy, Cylinder

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Depressurize fuel system, disconnect battery, and drain coolant. Remove drive belt, alternator, valve cover, throttle body, fuel injectors, fuel rail, manifolds, timing chain, camshaft sprockets, camshafts, lifters, and valve timing control valve. Label and remove coolant hoses and electrical connections from cylinder head. Loosen cylinder head bolts and lift the head off the engine block. Installation: Clean cylinder head and block surfaces. Remove carbon and old gasket material, clean with lacquer thinner. Check for damage. Chase threads in cylinder head bolt holes, clean with compressed air. Clean bolt threads. Install components. Position new gasket over dowel pins in block, apply RTV sealant, set cylinder head on block. Oil cylinder head bolts, install and tighten. Reverse removal steps. Adjust valves. Change engine oil and filter. Refill cooling system, run engine, check for 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.

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

The procedure involves removing the timing belt, camshaft sprockets, and upper idler pulley. If the timing belt isn't being replaced, it can remain on the lower timing belt cover.

The first valve can be removed by compressing the springs with a spring compressor, removing the keepers, and then carefully releasing the valve spring compressor to remove the retainer, spring, and spring seat.

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.

Using a 10 mm hex-head socket bit and a breaker bar, loosen the cylinder head bolts in 1/4-turn increments until they can be removed by hand, following the reverse order of the recommended tightening sequence.

Drain the cooling system, including the engine block.

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.

Reconnect the cable to the negative battery terminal, start the engine, and check for leaks.

The remainder of the installation is the reverse of the removal procedure.

Remove the camshaft(s) from the head(s) you intend to remove.

Clean the cylinder head with solvent and thoroughly dry it, using compressed air to speed up the drying process and ensure all holes and recessed areas are clean.

Compress the springs with a valve spring compressor and carefully install the keepers in the upper groove. Then slowly release the compressor and ensure the keepers seat properly. If necessary, apply a small dab of grease to each keeper to hold it in place, as the small valve stem keepers are easier to position when coated with grease.

Before the valves are removed, it is important to label and store them along with their related components to keep them separate and ensure they can be reinstalled in the same valve guides they were removed from. A small plastic bag with an appropriate label can be used for this purpose.