To also reach the other parts of the engine, one has to undo the bolts holding the engine cover and then pull it up from the
Valve Cover. Further, the valve cover needs to be unplugged and it is necessary to set the number one piston at the uppermost position. Turn the rocker arm/lost motion holder bolts anti-clockwise in the recommended sequence until the tension of the spring is released and then turn them clockwise in the reverse sequence. Raising out of the rocker arm assembly, raise lost motion holder and assemblies off the rocker arm, next, raise the rocker arms and the shaft assembly out of the cylinder head. Remove the oil control orifice on the cylinder head, it is also marked that the O-ring in the lower part should be replaced after taken off. When concerning the disassembly and inspection of the rocker arm assembly, loose the bolts holding the parts and gently slid off the rocker arms, springs, collars, and the bearing caps following the relationship for reassembly purposes. Wash all parts carefully and check for signs of wear and tear: the faces and tips of the rocker arm and the surfaces of the shafts. Any shafts which are plausible, worn out or crumbling must be replaced and the oil holes should be clear. Put some engine assembly lubricant or oil on all the parts before reassembling the rocker arm to the shafts; there could be set left and right and the marks are vital. Fit a new O-ring on the oil control orifice and place it into the cylinder head; and fit the rocker arm. Lower the lost motion assemblies into the holder, fit the holder on the rocker assemblies and tighten the outer two motion holder bolts to the required torque. Loosen all rocker arm/lost motion holder mounting bolts gradually in the proper sequence to the torque indicated. Some automakers recommend reversing the procedure of removal and, at the same time, checking and adjusting the valve clearance if needed, but the final step remains the same-check for oil leaks and the general performance of the engine.