REMOVAL & INSTALLATION
- Remove the rocker arm cover.
- Remove the pushrod covers.
Keep all components in order. If reusing components, install them into their original positions. If a new hydraulic lifter is being installed, all sealer coating inside the lifter must be removed.
- Remove the pushrods.
- Remove the lifters.
- 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.
- Installation is the reverse of removal, be sure to lubricate the lifter and lifter body using clean engine oil. If installing new lifters, all sealer coating inside the lifter must first be removed.
- When installing the pushrod cover, use a thin coating of RTV sealant around the entire cover flange. Install the cover retaining nuts.
Use of a Hydraulic Lifter Remover tool J-9290-1 (slide hammer type) or J-3049-A (plier type) will greatly ease the removal of stuck lifters.
- Remove the rocker arm covers.
- Remove the intake manifold.
- Remove the rocker arm nuts and balls.
- Remove the rocker arms and pushrods.
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 lifters from the bores.
- For proper rotation during engine operation, the lifter bottom must be convex. Check the lifter bottom for proper shape using a straight edge. If the lifter bottom is not convex, replace the lifter. Chances are if lifters are in need of replacement, so is the camshaft.
- Lubricate and install the lifters. If installing new lifters, coat the lifter body and foot using Molykote® or an equivalent prelue, then add 1051396 or an equivalent engine oil supplement to the crankcase.
- Install the pushrods, rocker arms, rocker arm nuts and balls, then properly adjust the valve lash.
- Install the intake manifold.
- Install the rocker arm covers.