Tools Required

J 7872 Magnetic Base Dial Indicator Set

1. Clean the camshaft in solvent.

Caution: Wear safety glasses in order to avoid eye damage.

2. Dry the camshaft with compressed air.



3. Inspect the camshaft for the following conditions:

•	Worn, scored, or damaged bearing journals (1)

•	Worn camshaft lobes (2)

•	Damaged bolt threads (3)

•	Damaged sprocket pin (4)




4. Measure the camshaft journals with a micrometer. Refer to Engine Mechanical Specifications .
5. Measure for a bent camshaft or excessive camshaft runout using J 7872 :

5.1.	Mount the camshaft in a suitable fixture.

5.2.	Use the J 7872 in order to measure for a bent camshaft. Refer to Engine Mechanical Specifications .

6. Replace the camshaft if runout exceeds specifications.