Acura 10004-PVF-A01 General Assembly, Front Cylinder Head

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First of all, before you can replace a cylinder head, you should relieve fuel system pressure and disconnect the battery. After that, drain the cooling system and remove necessary components such as power steering pump, alternator, intake manifold, exhaust manifolds, timing belts, camshaft sprockets and coolant passage. Then remove valve cover, rocker arms, fuel rails, injectors and lower intake manifold. Check for damage; clean orifices that control oil and apply oil on new bolts. Install them by tightening them appropriately then complete other steps.

To remove the cylinder head, first relieve the fuel system pressure, disconnect the negative battery cable, and drain the cooling system, including the cylinder block. Next, remove the power steering pump without disconnecting the fluid lines, and if the front cylinder head is being removed, take out the alternator. Proceed to remove the upper intake manifold, exhaust manifolds or converters, timing belt, and camshaft sprockets, along with the timing belt rear covers from each cylinder head. Remove the connector brackets from the transaxle side of the front and rear cylinder heads, the coolant passage, valve covers, and rocker arms/shafts assembly. If the rear cylinder head is being removed, detach the EVAP purge valve joint from its bracket. Remove the fuel rails and injectors, followed by the lower intake manifolds. Loosen the cylinder head bolts in 1/4-turn increments in the opposite sequence of tightening until they can be removed by hand, then lift the cylinder head off the engine block, taking care not to damage the gasket surfaces. For installation, ensure the mating surfaces of the cylinder heads and block are clean, using a plastic gasket scraper and brake system cleaner. Check for any damage on the surfaces and address it as necessary. Chase the threads in the head bolt holes and clean them with compressed air. Clean the oil control orifices and reinstall them with new O-rings, positioning new gaskets over the orifices and locating dowels. Carefully set the head on the block without disturbing the gasket, apply clean engine oil to the threads and under the bolt heads, then install and tighten the bolts in the recommended sequence. The remainder of the installation follows the reverse order of removal, including refilling the cooling system, changing the oil and filter, and running the engine to check for leaks, allowing it to run at low speed for five minutes to bleed air from the lost motion assemblies while monitoring for any persistent tappet noise that may indicate a problem.