Toyota 11101-09260 Head Sub-Assy, Cylinder

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For 2010 or later models, you can remove the engine and transaxle assembly. Begin by relieving fuel system pressure, disconnecting the battery, draining the coolant, and removing the drivebelt, alternator, valve cover, throttle body, fuel injectors, fuel rail, intake and exhaust manifold, timing chain, and camshaft sprockets. For newer models, also remove camshafts, lifters, and camshaft housing. Remove the variable valve timing controversy, coolant hoses, and electrical connections from the cylinder head. Loosen the cylinder head bolts in 1/4-turn increments and lift the cylinder head off. Install the removed components, position the new gasket, and apply RTV sealant. Tighten the bolts in the recommended sequence. Installation is the reverse of removal.

Conclude the installation process by reversing the removal steps, including installing the engine/transaxle assembly, refilling oil and coolant, reconnecting the battery cable, starting the engine, and conducting a leak check.

To remove the cylinder head:Loosen the cylinder head bolts in 1/4-turn increments using a 10 mm hex-head socket bit and a breaker bar.Lift the cylinder head off the engine block.Remove any remaining external components for cleaning and inspection.

Remove and discard the old cylinder head gasket.

Start by taking out the camshafts and camshaft housings, followed by the exhaust manifolds.

Change the engine oil and filter.

Drain the cooling system, including the engine block.

Put a paint mark on the front edge of each bolt, then retighten each bolt another 90-degrees in the same sequence. Repeat this one more time for a total of 180-degrees from the initial torque.

Mark the front of each bolt head with paint.

Cylinder head disassembly involves the removal of the intake and exhaust valves and related components, assuming that the lifters or rocker arms and camshaft(s) have already been removed.

Carefully inspect the head for cracks, evidence of coolant leakage, and other damage. If cracks are found, consult an automotive machine shop for repair.

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.