You need to disconnect the negative battery cable, remove the valve rocker arm cover, the
Camshaft timing belt pulley, the camshaft sensor from the camshaft sensor housing and the three camshaft sensor housing bolts, and the camshaft sensor housing, loosen all valve adjusting screw lock nuts, turn to adjust screws back all the way to allow all rocker arms to move freely, gradually remove the twelve camshaft housing bolts, and remove the camshaft housings from the cylinder head and the camshaft from the cylinder head.