Cleaning Procedure
- Clean the camshaft in solvent.
Warning: Refer to Safety Glasses and Compressed Air Warning in the Preface section.
- Dry the camshaft with compressed air.
Visual Inspection
- Inspect the camshaft drive sprocket thread hole (1) for damage.
- Inspect the camshaft lobes (2) and journals (5) for the following conditions:
| • | Excessive scoring or pitting |
| • | Discoloration from overheating |
| • | Deformation from excessive wear, especially the camshaft lobes |
- Inspect the camshaft thrust surface (3) for damage.
- Inspect the camshaft position rotator (4) for damage.
- Inspect the camshaft sealing surface (6) for damage.
Camshaft Measurement
- Measure the camshaft journals for diameter and out-of-round using an outside micrometer.
- Compare your results with
Engine Mechanical Specifications.
| • | If the diameter is smaller than specifications, replace the camshaft. |
| • | If the out-of-round exceeds specifications, replace the camshaft. |
