1. Disconnect the negative cable from the battery.
2. Remove the air cleaner housing (3) (Refer to 9 – ENGINE/AIR INTAKE SYSTEM/AIR CLEANER HOUSING – REMOVAL).
3. Remove intake manifold (Refer to 9 – ENGINE/MANIFOLDS/INTAKE MANIFOLD – REMOVAL).
4. Remove cylinder head cover (Refer to 9 – ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) – REMOVAL).
5. Remove rocker arm assembly and push rods (Refer to 9 – ENGINE/CYLINDER HEAD/ROCKER ARM I ADJUSTER ASSY – REMOVAL). Identify push rods to ensure installation in original location.
6. Remove the cylinder head (Refer to 9 – ENGINE/CYLINDER HEAD – REMOVAL).
7. Remove bolt from tappet retainer (1).
8. Remove tappet retainer (1).
9. Pull tappet out of bore with a twisting motion. If all tappets are to be removed and reused, identify tappets to
ensure installation in original location.
10. Check camshaft lobes for abnormal wear.