Clean the rocker arms, shafts, pushrods, guides, clamps, and lifters in parts cleaning solvent.
Immerse the lifters in solvent and use a pushrod to stroke the lifter plunger. Replace any lifter that is collapsed, or if fluid cannot be pumped out oil hole when plunger is stroked. Inspect the lifter roller and bearings. Replace any lifter that exhibits wear on the body, roller, or bearings. Turn the roller and note action. Replace the lifter if the roller binds, or is seized. Check each pushrod (Figure 2-144) for distortion and wear. Replace any pushrod that is bent. Check the pushrod ball ends. Replace the pushrod if either ball end is flattened, scored, or loose.
Inspect the lifter guide plates and clamps (Figure 2-144). Replace the plates and clamps if worn, or distorted. Also make sure the guide plates are a proper slip fit on the lifters.
Inspect the rocker arms and shafts for wear, cracks, scoring/grooving, or distortion. Check the pushrod contact area on each arm for wear, or scoring. Replace the rocker arms, or shaft as needed.
Discard the rocker arm retainers (Figure 2-145). Also discard
the rocker shaft retainers if bent, distorted, or cracked.
