Toyota 11101-29409 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.

Drop the spring seat or shim(s) over the valve guide and set the valve spring and retainer in place.

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.

Ensure that the head is clean.

Install the timing chains, the timing chain cover, and all components attached to the cover.

Remove the air intake plenum and intake manifold.

Use a stiff wire brush to remove deposits that may have formed in the various holes.

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

It may be more practical and economical for the home mechanic to purchase replacement head(s) rather than taking the time to disassemble, inspect, and recondition the original(s) due to the necessity of specialized tools for disassembly and inspection, and the potential unavailability of replacement parts.

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

To remove the cylinder head, you need to carefully loosen the cylinder head bolts in 1/4-turn increments until they can be removed by hand. It's crucial to loosen them in this specific manner to prevent warping or cracking of the cylinder head. The cylinder head can be lifted off the engine block, and if it's stuck, it should be cautiously pried up at the transaxle end, beyond the gasket surface.

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