To start with, relieve the pressure in the fuel system and disconnect the battery to remove the camshaft. After that, drain the cooling system and remove timing chain cover, timing chain, phaser, and oil pump. Then remove cylinder heads and radiator. Remove Lash Adjuster rail mounting bolts next and extract Lash Adjusters from bore of Lash Adjusters using a special tool or magnet. Before camshaft removal check endplay and then remove thrust plate of camshaft. Carefully pull it using a long bolt as handle while turning it. To inspect camshaft; look for discoloration on lobes, score marks on lobes, uneven wear on lobes, check bearing journals for wear on journals of bearings measure lobe height for each lobe of camshaft among others things such as this. Check shoves inside Lash Adjuster wall, Lash Adjuster seats valves along pushrod or roller. If new Lash Adjusters are going into engine, new camshaft must also be installed with them. With installation lube apply some lubricant onto both bearing journal as well as the hardened lobes of the camshaft before sliding its nose into place and installing thrust plate for it. Installation is followed by installation of timing chain, sprocket, lubricating Lash Adjusters then finally putting them in block. Finally complete remaining steps in checking if necessary filling coolant system oil filter starting engine checking leaks changing oil breaking components to other new ones that remain.