Before removing the cylinder head cover/intake manifold (2) the engine must rotated to 90° after TDC to assure proper alignment of the engine timing components. Failure to do so could result in valve and/or piston damage during reassembly. (Refer to 9 - ENGINE/VALVE TIMING - STANDARD PROCEDURE)Disconnect negative battery cable.Rotate the crankshaft to 90 degrees ATDC (Refer to 9 - ENGINE/VALVE TIMING - STANDARD PROCEDURE).Remove the camshafts.(Refer to 9 - ENGINE/CYLINDER HEAD/CAMSHAFT(S) - REMOVAL)Remove rocker arms (1) and lifters (2).