During the examination, take a close look at camshaft bearing surfaces to see if they are damaged or not. These damages may include pitting, score marks, galling and unusual wear. If such signs emerge, then there will be a need to replace the cylinder head. Measure the outside diameter of each camshaft bearing journal and record the measurements; then measure the inside diameter of the corresponding camshaft bearings. Calculate oil clearance for each bearing by subtracting its inside diameter from the outside diameter of the journal. Compare these values with specified clearance values. If any measurements fall outside standard wear limits, replace either/both cylinder head and camshaft as necessary. While running it slowly to observe readings, check camshaft runout using a dial indicator. Compare these readings with specified runout values; when runout exceeds specified limit- replace camshaft. To measure camshaft lobe height use a micrometer and compare this value with specified lobe height and calculate wear. Replace this part if its wear is higher than acceptable limit stated in specification for that particular engine combination or grind it down to bring it back into specification again can be another option. Check Lash Adjuster contact surfaces and sliding surfaces for scratches and signs of wear-This inspection also includes valve Lash Adjusters, 2.4L engine valve adjusting shims 3.5L engines and valve adjusting shims described above for(change "valve" to "engine"). Check Lash Adjuster pads and adjust shims on respective cams as they too could be worn out if Lash Adjuster pads are found to be worn out too. Lash Adjuster can be compared with specifications by measuring their outside diameters using a micrometer; discard any Lash Adjusters that are over worn-out across their entire faces in accordance with specifications discussed here under (replace last words). Comparing results of Lash Adjuster bore diameters against Lash Adjuster-to-guide clearances per specification would necessitate replacing Lash Adjuster guide assemblies (3.3L engines) or cylinder heads (2.4L and 3.5L engines) when the bore wear is above specified limit. The difference between the inside diameter of the Lash Adjuster bore and the outside diameter of the Lash Adjuster should be compared with specifications of allowable clearance for a particular engine combination. Inspect all parts, new or old, before reassembly, and for a 3.3L engine, inspect rocker arms and shafts; replace rocker arms if the pads are worn out, without attempting to grind them back into shape by grinding on the pad surface itself.