Honda 14610-R70-A02 Intake Rocker Arm Assembly

The camshaft holders, camshafts, and rocker arm assembly are fixed directly to the head by a number of bolts only and in some engines they can be unbolted as a complete unit on the bench. Starting with the removal of the negative terminal of the battery and, placing the number one piston at TDC. Take off the valve cover and the timing chain after it then slacken all the rocker arm adjusting bolts. The camshaft holder bolts are then to be removed using the correct sequence and then the upper timing chain guide. Lift off the camshaft holders and camshafts, and remove the rocker arm assembly Fig 2, but make sure that each bolt marketed will fit back in the camshaft holder for reassembly. When the intake camshaft sprocket has been replaced it should be secured by sealing the advance and retard holes with the help of tape and the lock should be released with the help of compressed air. For inspection, remove the rocker arm assembly by taking out all the retaining bolts and lay down the various subassemblies in a order where they can be reassembled in the right sequence. Clean the assembly and look for signs of wear and tear and damage them on rocker arm faces, shaft and bearing surfaces. If checking camshaft endplay: install rocker arm assembly and camshafts, then mount a dial indicator and witness the reading as you try to move the camshaft. For camshaft runout, it is necessary to place the camshaft in to V-blocks and turn it it in order to measure runout. Camshaft bearing journals and caps needs to be checked for their wear and tear, the cam lobes for scoring and, for uneven wear, the required parts should be replaced. Some of them involve lubrication and cleanliness so that they don't experience it again in future. For installation, coated all parts, rearranged the rocker arms, and aligned the correct configuration of the camshaft sprocket timing marks. Torque the camshaft holder bolts in the correct order and finish the procedure in the reverse process of what was done earlier, followed by the checking of all valve clearance, and leaks, etc., after the running of the engine.

As for 3.0L models, the first steps are the removal of the valve cover, the positioning of the engine at TDC for the piston 1, the belts removal, including the timing one. In the process of removing the assembly, the bolts that are holding the rocker shaft should be loosened gradually in order to minimize spring pressure into the cylinder head; the rocker arms and the shaft assembly should then be lifted from the cylinder head, but the bolts must still remain on the cylinder head to facilitate easy access to the throttles and to reduce the pressure exerted by the tensioner.Spring pressure must be relieved before the rocker shaft mounting bolts are loos Should the rocker arm assembly require further disassembly and inspection, then it is necessary to remove the mounting bolts to free the rocker arms and springs from the shafts, at this point, the positions must be recorded with the purpose of identification in the reassembly stage. The examination of all parts for any sign of wear and or damage is done, while checking that the oil flow is not restricted and that the roller tips of needles have a smooth working surface. For assembly grease all the parts with engine oil before assembling the shafts, paint all the worn parts with camshaft installation lubricant before finally tightening the bolt with the recommended sequence. For 3.5L (J35Z3) models, if possible, take off the valve cover or covers, and then relax the adjusting screws of the rocker arms and the bolts of the rocker arm shaft bridge and holder while spiralling them. Raise the assembly away from the cylinder head, while being careful to not disturb the circlips for lost motion assemblies. Tie up intake rocker arms with rubber bands and pull out the rocker arm shaft bolts and then remove the components. Check for wear and tear and the efficiency of the VTEC pistons. clean engine oil should then be used to applied to the rocker arms and pistons before assembly and lubrication of the shafts before they can be fitted. For 3.5L (J35Z2 and J35Y1) models procedure is quite similar to the one described above, where you have to make sure that all the parts are tightened with rubber bands and fitted correctly before proceeding with reassembly. Remove old liquid gasket and apply new bead before installing the rocker arm assemblies and tighten the bolts in spiral motion. Last but not least, inspect and correct, if necessary, valve clearance, and test the leaks of oil and operation of the engine.

Note the markings and differences between left and right side parts when installing the rocker arms, shafts, and springs.