Tools Required

1. Inspect the camshaft journals and lobes for wear, damage or scoring (1, 2).



2. Using an outside micrometer, measure the height of the intake and exhaust lobes.

Standard Camshaft Intake Lobe Height
36.171-36.331 mm (1.4241-1.4303 in)

Minimum Camshaft Intake Lobe Height
36.071 mm (1.4202 in)

Standard Camshaft Exhaust Lobe Height
36.356-36.516 mm (1.4314-1.4376 in)

Minimum Camshaft Exhaust Lobe Height
36.256 mm (1.4275 in)

3. If any of the camshaft lobes measured are not within the required specifications, the camshaft must be replaced.



4. Place the camshaft in two V-Blocks and use a dial indicator to measure the runout of the camshaft.

Camshaft Runout
Maximum = 0.10 mm (0.0039 in)




5. Inspect the cylinder head for scoring in the camshaft journals.



6. Inspect the camshaft journal caps for scoring (1).
7. Clean the cylinder head.

•	Wash the cylinder head in solvent.

•	Inspect the cylinder head for cracks or other signs of damage.