Cruze

Camshaft Cleaning and Inspection

1. Clean the camshaft in solvent.

Warning: Refer to Safety Glasses and Compressed Air Warning in the Preface section.

2. Dry the camshaft with compressed air.

1. Inspect the camshaft drive sprocket thread hole (1) for damage.
2. Inspect the camshaft lobes (2) and journals (5) for the following conditions:

•	Excessive scoring or pitting

•	Discolouration from overheating

•	Deformation from excessive wear, especially the camshaft lobes

3. Inspect the camshaft thrust surface (3) for damage.
4. Inspect the camshaft position rotator (4) for damage.
5. Inspect the camshaft sealing surface (6) for damage.

1. Measure the camshaft journals (2) for diameter and out-of-roundness using a micrometer gauge (1).
2. Check specifications. Refer to Engine Mechanical Specifications .

•	If the diameter is smaller than specifications, replace the camshaft.

•	If the out-of-round exceeds specifications, replace the camshaft.