REMOVAL, INSTALLATION & INSPECTION
See Figures 1, 2, 3 and 4
When installing new lifters, a pre-lube should always be applied to the lifter body. It is also a good idea to prime hydraulic lifters by submerging them in clean engine oil and depressing the plunger using an old pushrod. This allows the internal components of the hydraulic lifter to coat with oil before initial operation in the engine. All lifters should be replaced when a new camshaft is installed.
If any valve train components (lifters, pushrods, rocker arms) are to be reused, they must be tagged or arranged during removal to assure installation in their original locations.
- Remove the rocker arm cover.
- Remove the cylinder head assembly from the engine.
- Remove the bolts retaining the lifter anti-rotation brackets, then remove the brackets.
- Remove the hydraulic roller lifters from the bores.
- Inspect the lifter and lifter bore for wear and scuffing. Examine the roller for freedom of movement and/or flat spots on the roller surface.
If installing a new lifter, coat the lifter body with a suitable camshaft pre-lube
- Install each hydraulic lifter to its bore being careful to align the flat sides (top) of the lifters with the flat sides of the anti-rotation brackets. When properly installed the flat sides of each lifter are aligned parallel to the anti-rotation bracket. The roller at the bottom of the lifter is parallel to the camshaft lobe.
Make sure to properly align and install each lifter as improper installation of the lifters or brackets could result in engine damage.
- Install the anti-rotation bracket retaining bolts and tighten to 97 inch lbs. (11 Nm).
- Install the cylinder head.
- Install the rocker arm cover.