35. Camshaft and Bearings Clean and Inspect

^ Tool Required
- J 7872 Magnetic Base Dial Indicator





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
^ Worn camshaft lobes
^ Damaged sprocket pin
4. Measure the camshaft journals with a micrometer. Refer to Specifications.
5. Measure for a bent camshaft or excessive camshaft runout using J 7872.
5.1. Mount the camshaft in V-blocks between centers.
5.2. Use the J 7872 in order to measure for a bent camshaft.
Refer to Specifications.
6. Replace the camshaft if runout exceeds specifications.
7. Inspect the camshaft bearings and bearing cap surfaces for the following:
^ Wear
^ Scoring
^ Overheating from lack of lubrication
8. Inspect the bearing clearances with gauging plastic.
Refer to Specifications.
9. Inspect the camshaft for excessive end play. Refer to Specifications.
10. The camshaft bearing surfaces are machined into the cylinder head and are not serviceable.