Toyota 11101-09132 Head Sub-Assy, Cylinder

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To begin the removal process, disconnect the negative battery cable and drain the cooling system, including the block. Proceed to remove the air intake plenum, intake manifold, exhaust manifold(s), alternator, and power steering pump. Remove the timing belt, camshaft sprockets, and upper idler pulley, taking note that if the timing belt isn't being replaced, it can remain on the lower timing belt cover. Remove the bolts securing the number 3 timing belt cover and disconnect the coolant sensor connectors, removing the water transfer casting as well. Proceed to remove the camshaft(s), disconnecting electrical connectors from VVT sensors and the timing oil control valve. Remove the rear cylinder head bolts and move engine wiring harnesses away from the heads. Utilize an 8 mm hex bit or Allen wrench to remove the recessed head bolts, then loosen and remove the remaining bolts by hand, adhering to the reverse order of the recommended tightening sequence. Lift the cylinder head off the engine block, and if it's stuck, employ a wood block and hammer for assistance. Repeat this procedure for the other head. For installation, ensure clean mating surfaces on the cylinder heads and block, eliminating carbon and old gasket material. Check for nicks or damage, addressing any issues with a file or machining if necessary. Clean the cylinder head bolt holes and threads, mounting each bolt in a vise and running a die down the threads. Position new gaskets over dowel pins in the block, placing the head on the block without disturbing the gasket. Apply a small amount of engine oil to the threads of the head bolts and install them in their original locations, tightening finger-tight before following the recommended sequence to tighten the bolts. Mark each bolt head and socket for reference. Tighten each 12-point bolt an additional 1/4-turn and then tighten the recessed bolt. Repeat this process for the other cylinder head. Complete the remaining installation steps in reverse order, including refilling the cooling system, changing the oil and filter, running the engine, and checking for leaks.

Use a 10 mm hex-head socket bit and a breaker bar to loosen the cylinder head bolts in 1/4-turn increments until they can be removed by hand.