Lifter / Lash Adjuster: Service and Repair

Oversize Lifter Marking:

Removing The Hydraulic Lifter:

Removing The Hydraulic Lifter (Typical):

Some engines have both standard and 0.25 mm (0.010-inch) oversize valve lifters. The cylinder case will be marked with a white paint mark and 0.25 mm 0.5. stamp where the oversize lifters are used.

If lifter replacement is necessary, use new lifters with a narrow flat along the lower 1/4 of the body length. This provides additional oil to the cam lobe and lifter surfaces.

REMOVE OR DISCONNECT
Tools Required:
J 3049 Hydraulic Lifter Remover (Plier Type) or
J 9290-1, Hydraulic Lifter Remover (Slide Hammer Type)
1. Valve covers.
2. Intake manifold.
3. Rocker arm nuts, balls, rocker arms, and push rods. Place the components in a rack so they can be installed in the same location.
4. Lifters.
^ Remove the lifters one at a time and place them in an organizer rack. The lifters must be installed into the same bore from which they were removed.

NOTE A stuck lifter can be removed using J 3049 or J 9290-01.

INSPECT
1. Hydraulic lifter body for scuffing or scoring. If the lifter body wall is worn or damaged, the mating bore in the block should also be checked.
2. Check the fit of each hydraulic lifter in its mating bore in the block. If the clearance is excessive, try a new lifter.
^ The hydraulic lifter foot must be smooth and slightly convex. If worn, pitted, or damaged, the mating camshaft lobe should also be checked.

INSTALL OR CONNECT
1. Hydraulic lifters into the block.

CAUTION Lubricate the lifter foot and body with "Molykote" (or equivalent).

^ Make sure the lifter foot is convex by holding a good straight edge to the surface and looking into a light source.
^ When any new hydraulic lifters or a new camshaft is installed, Engine Oil Supplement (or equivalent) should be added to the crankcase oil.
^ Replace all hydraulic lifters when a new camshaft is installed.
2. Intake manifold.
3. Pushrods, rocker arms, balls. and rocker arm nuts.
Adjust
^ Valves. Refer to Valve, Intake/Exhaust / Service and Repair. Adjustments
4. Valve covers.