Camshaft, Lifters and Push Rods: Service Precautions

CAUTION:
^ Removal and installation of the Hydraulic Lash Adjuster [Lifter, Valve] (HLA) must be carried out only when the problem cannot be solved by the HLA troubleshooting.
^ The HLA must be installed in the same positions from which they were removed. If they are not, it can cause premature and uneven wear.
^ Remove the thrust caps only after removing all camshaft caps. Otherwise, the thrust caps can be damaged.
^ When the camshaft lobe is pressing on the HLA, removing the camshaft cap can damage the cylinder head thrust journal support.
^ Install the thrust caps (RH is 5 mark, LH is B mark) first. Otherwise, the camshaft can be broken or damaged.
^ Because there is little camshaft thrust clearance, the camshaft must be held horizontally while it is installed. Otherwise, excessive force will be applied to the thrust area, causing burr on the thrust receiving area of the cylinder head journal.