You need to remove the radiator support, the valve lifters, the engine front cover, and the starter motor, then install the J 42386-A and bolts, rotate the crankshaft sprocket until the
Camshaft position (CMP) actuator alignment mark and the crankshaft sprocket alignment mark are aligned and remove and discard the CMP actuator solenoid valve, the CMP actuator and timing chain, and the camshaft retainer bolts and retainer. Then you can install the camshaft sprocket bolt into the camshaft front bolt hole, carefully rotate and remove the camshaft from the engine block and remove the bolt from the camshaft.