Spark

Camshaft Cleaning and Inspection

1. Clean the camshaft in solvent.

Warning: Refer to Safety Glasses Warning in the Preface section.

2. Dry the camshaft with compressed air.



3. Inspect the camshaft for the following conditions:

•	Camshaft bearing journals (1) that are:

-

Worn

-

Scored

-

Damaged

•	Worn camshaft lobes (2)

•	Damaged sprocket bolt threads (3)

•	Damaged sprocket pin




4. Measure the outer diameter of each journal (1) at the 4 different places.
5. Replace the camshaft if the measured value is not as specified.



6. Measure for excessive camshaft runout, using the indicator.

6.1.	Mount the camshaft in a suitable fixture.

6.2.	Use the indicator in order to measure for a bent camshaft. Refer to Engine Mechanical Specifications .

7. Replace the camshaft if runout exceeds specifications.